diff --git a/lib/OptimizationAuglag/Project.toml b/lib/OptimizationAuglag/Project.toml
index 4937cf583..3d9f8267c 100644
--- a/lib/OptimizationAuglag/Project.toml
+++ b/lib/OptimizationAuglag/Project.toml
@@ -10,6 +10,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
@@ -23,6 +24,7 @@ OptimizationBase = {path = "../OptimizationBase"}
 OptimizationOptimisers = {path = "../OptimizationOptimisers"}
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 ForwardDiff = "1.0.1"
@@ -37,4 +39,4 @@ Test = "1.10.0"
 julia = "1.10"
 
 [targets]
-test = ["Test", "ForwardDiff", "MLUtils", "OptimizationOptimisers", "Random", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Test", "ForwardDiff", "MLUtils", "OptimizationOptimisers", "Random", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationAuglag/test/qa/Project.toml b/lib/OptimizationAuglag/test/qa/Project.toml
index c99a701a8..b445da2c2 100644
--- a/lib/OptimizationAuglag/test/qa/Project.toml
+++ b/lib/OptimizationAuglag/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationAuglag = "2ea93f80-9333-43a1-a68d-1f53b957a421"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationAuglag = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationAuglag/test/runtests.jl b/lib/OptimizationAuglag/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationAuglag/test/runtests.jl
+++ b/lib/OptimizationAuglag/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationBBO/Project.toml b/lib/OptimizationBBO/Project.toml
index 5294254e1..75952e93a 100644
--- a/lib/OptimizationBBO/Project.toml
+++ b/lib/OptimizationBBO/Project.toml
@@ -12,6 +12,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 LogExpFunctions = "2ab3a3ac-af41-5b50-aa03-7779005ae688"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
@@ -21,6 +22,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 BlackBoxOptim = "0.6.3"
 LogExpFunctions = "0.3.28"
 OptimizationBase = "5"
@@ -33,4 +35,4 @@ Test = "1.10"
 julia = "1.10"
 
 [targets]
-test = ["Random", "Test", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Random", "Test", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationBBO/test/qa/Project.toml b/lib/OptimizationBBO/test/qa/Project.toml
index 7e114dcf3..04e17bf58 100644
--- a/lib/OptimizationBBO/test/qa/Project.toml
+++ b/lib/OptimizationBBO/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationBBO = "3e6eede4-6085-4f62-9a71-46d9bc1eb92b"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationBBO = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationBBO/test/runtests.jl b/lib/OptimizationBBO/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationBBO/test/runtests.jl
+++ b/lib/OptimizationBBO/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationBase/test/qa/Project.toml b/lib/OptimizationBase/test/qa/Project.toml
index a7120a912..36124adc6 100644
--- a/lib/OptimizationBase/test/qa/Project.toml
+++ b/lib/OptimizationBase/test/qa/Project.toml
@@ -6,9 +6,6 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
-[sources]
-OptimizationBase = {path = "../.."}
-
 [compat]
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
diff --git a/lib/OptimizationCMAEvolutionStrategy/Project.toml b/lib/OptimizationCMAEvolutionStrategy/Project.toml
index 1885a0a32..8c9c1336c 100644
--- a/lib/OptimizationCMAEvolutionStrategy/Project.toml
+++ b/lib/OptimizationCMAEvolutionStrategy/Project.toml
@@ -9,6 +9,7 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
@@ -17,6 +18,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 Test = "1"
@@ -27,4 +29,4 @@ SciMLBase = "2.122.1, 3"
 Reexport = "1.2"
 
 [targets]
-test = ["Test", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Test", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationCMAEvolutionStrategy/test/qa/Project.toml b/lib/OptimizationCMAEvolutionStrategy/test/qa/Project.toml
index 410099d0f..f13ca96f1 100644
--- a/lib/OptimizationCMAEvolutionStrategy/test/qa/Project.toml
+++ b/lib/OptimizationCMAEvolutionStrategy/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationCMAEvolutionStrategy = "bd407f91-200f-4536-9381-e4ba712f53f8"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationCMAEvolutionStrategy = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationCMAEvolutionStrategy/test/runtests.jl b/lib/OptimizationCMAEvolutionStrategy/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationCMAEvolutionStrategy/test/runtests.jl
+++ b/lib/OptimizationCMAEvolutionStrategy/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationEvolutionary/Project.toml b/lib/OptimizationEvolutionary/Project.toml
index 6ce43ad1c..76bacbf1f 100644
--- a/lib/OptimizationEvolutionary/Project.toml
+++ b/lib/OptimizationEvolutionary/Project.toml
@@ -12,6 +12,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 LogExpFunctions = "2ab3a3ac-af41-5b50-aa03-7779005ae688"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
@@ -21,6 +22,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 Evolutionary = "0.11"
 LogExpFunctions = "0.3.28"
 OptimizationBase = "5"
@@ -33,4 +35,4 @@ Test = "1.10"
 julia = "1.10"
 
 [targets]
-test = ["Random", "Test", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Random", "Test", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationEvolutionary/test/qa/Project.toml b/lib/OptimizationEvolutionary/test/qa/Project.toml
index b74471af1..0faee410f 100644
--- a/lib/OptimizationEvolutionary/test/qa/Project.toml
+++ b/lib/OptimizationEvolutionary/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationEvolutionary = "cb963754-43f6-435e-8d4b-99009ff27753"
@@ -7,9 +8,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationEvolutionary = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationEvolutionary/test/runtests.jl b/lib/OptimizationEvolutionary/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationEvolutionary/test/runtests.jl
+++ b/lib/OptimizationEvolutionary/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationGCMAES/Project.toml b/lib/OptimizationGCMAES/Project.toml
index eea4fd017..9c3e2e413 100644
--- a/lib/OptimizationGCMAES/Project.toml
+++ b/lib/OptimizationGCMAES/Project.toml
@@ -9,6 +9,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 GCMAES = "4aa9d100-eb0f-11e8-15f1-25748831eb3b"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
@@ -18,6 +19,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 ForwardDiff = "0.10, 1"
 GCMAES = "0.1.34"
 OptimizationBase = "5.1"
@@ -29,4 +31,4 @@ Test = "1.10"
 julia = "1.10"
 
 [targets]
-test = ["ForwardDiff", "Test", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "ForwardDiff", "Test", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationGCMAES/test/qa/Project.toml b/lib/OptimizationGCMAES/test/qa/Project.toml
index dbb408f5f..caab42d43 100644
--- a/lib/OptimizationGCMAES/test/qa/Project.toml
+++ b/lib/OptimizationGCMAES/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationGCMAES = "6f0a0517-dbc2-4a7a-8a20-99ae7f27e911"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationGCMAES = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationGCMAES/test/runtests.jl b/lib/OptimizationGCMAES/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationGCMAES/test/runtests.jl
+++ b/lib/OptimizationGCMAES/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationIpopt/Project.toml b/lib/OptimizationIpopt/Project.toml
index b260146fb..21baa813f 100644
--- a/lib/OptimizationIpopt/Project.toml
+++ b/lib/OptimizationIpopt/Project.toml
@@ -12,6 +12,7 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 SymbolicIndexingInterface = "2efcf032-c050-4f8e-a9bb-153293bab1f5"
 
 [compat]
+SciMLTesting = "2.1"
 Aqua = "0.8"
 Ipopt = "1.10.3"
 LinearAlgebra = "1.10.0"
@@ -34,6 +35,7 @@ julia = "1.10"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
@@ -45,4 +47,4 @@ Symbolics = "0c5d862f-8b57-4792-8d23-62f2024744c7"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [targets]
-test = ["Aqua", "ModelingToolkit", "Random", "ReverseDiff", "Test", "Symbolics", "Zygote", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Aqua", "ModelingToolkit", "Random", "ReverseDiff", "Test", "Symbolics", "Zygote", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationIpopt/test/qa/Project.toml b/lib/OptimizationIpopt/test/qa/Project.toml
index 6eac0c726..002eab905 100644
--- a/lib/OptimizationIpopt/test/qa/Project.toml
+++ b/lib/OptimizationIpopt/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationIpopt = "43fad042-7963-4b32-ab19-e2a4f9a67124"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationIpopt = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationIpopt/test/runtests.jl b/lib/OptimizationIpopt/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationIpopt/test/runtests.jl
+++ b/lib/OptimizationIpopt/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationLBFGSB/Project.toml b/lib/OptimizationLBFGSB/Project.toml
index ec3ca162d..6daf03a06 100644
--- a/lib/OptimizationLBFGSB/Project.toml
+++ b/lib/OptimizationLBFGSB/Project.toml
@@ -10,6 +10,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
@@ -21,6 +22,7 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 DocStringExtensions = "0.9.5"
@@ -35,4 +37,4 @@ Zygote = "0.7.10"
 julia = "1.10"
 
 [targets]
-test = ["Test", "ForwardDiff", "MLUtils", "Zygote", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Test", "ForwardDiff", "MLUtils", "Zygote", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationLBFGSB/test/qa/Project.toml b/lib/OptimizationLBFGSB/test/qa/Project.toml
index 416b32854..fc721b197 100644
--- a/lib/OptimizationLBFGSB/test/qa/Project.toml
+++ b/lib/OptimizationLBFGSB/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationLBFGSB = "22f7324a-a79d-40f2-bebe-3af60c77bd15"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationLBFGSB = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationLBFGSB/test/runtests.jl b/lib/OptimizationLBFGSB/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationLBFGSB/test/runtests.jl
+++ b/lib/OptimizationLBFGSB/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationMOI/Project.toml b/lib/OptimizationMOI/Project.toml
index 99b21b810..fedd2d402 100644
--- a/lib/OptimizationMOI/Project.toml
+++ b/lib/OptimizationMOI/Project.toml
@@ -23,6 +23,7 @@ ModelingToolkit = "961ee093-0014-501f-94e3-6117800e7a78"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 AmplNLWriter = "1"
@@ -49,6 +50,7 @@ Zygote = "0.6, 0.7"
 julia = "1.10"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 AmplNLWriter = "7c4d4715-977e-5154-bfe0-e096adeac482"
@@ -62,4 +64,4 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [targets]
-test = ["AmplNLWriter", "HiGHS", "Ipopt", "Ipopt_jll", "Juniper", "NLopt", "ReverseDiff", "Test", "Zygote", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "AmplNLWriter", "HiGHS", "Ipopt", "Ipopt_jll", "Juniper", "NLopt", "ReverseDiff", "Test", "Zygote", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationMOI/test/qa/Project.toml b/lib/OptimizationMOI/test/qa/Project.toml
index 31a3568d7..9d738d100 100644
--- a/lib/OptimizationMOI/test/qa/Project.toml
+++ b/lib/OptimizationMOI/test/qa/Project.toml
@@ -9,7 +9,6 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
 OptimizationBase = {path = "../../../OptimizationBase"}
-OptimizationMOI = {path = "../.."}
 
 [compat]
 Aqua = "0.8"
diff --git a/lib/OptimizationMOI/test/qa/qa.jl b/lib/OptimizationMOI/test/qa/qa.jl
index 0a41a128b..df446ff7e 100644
--- a/lib/OptimizationMOI/test/qa/qa.jl
+++ b/lib/OptimizationMOI/test/qa/qa.jl
@@ -53,6 +53,14 @@ run_qa(
             :AutoSparsePolyesterForwardDiff,
             :AutoSparseReverseDiff,
             :AutoSparseZygote,
+            :DEFAULT_CALLBACK,
+            :DEFAULT_DATA,
+            :IncompatibleOptimizerError,
+            :MaxSense,
+            :MinSense,
+            :ObjSense,
+            :OptimizationCache,
+            :OptimizerMissingError,
         ),
     ),
     ei_broken = (:no_implicit_imports,),
diff --git a/lib/OptimizationMOI/test/runtests.jl b/lib/OptimizationMOI/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationMOI/test/runtests.jl
+++ b/lib/OptimizationMOI/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationMadNLP/Project.toml b/lib/OptimizationMadNLP/Project.toml
index f20a56725..553b9b4f3 100644
--- a/lib/OptimizationMadNLP/Project.toml
+++ b/lib/OptimizationMadNLP/Project.toml
@@ -14,6 +14,7 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 SymbolicIndexingInterface = "2efcf032-c050-4f8e-a9bb-153293bab1f5"
 
 [compat]
+SciMLTesting = "2.1"
 ADTypes = "1.14"
 Aqua = "0.8"
 DifferentiationInterface = "0.7.13"
@@ -42,6 +43,7 @@ OptimizationBase = {path = "../OptimizationBase"}
 OptimizationNLPModels = {path = "../OptimizationNLPModels"}
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ADTypes = "47edcb42-4c32-4615-8424-f2b9edc5f35b"
@@ -57,4 +59,4 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [targets]
-test = ["ADTypes", "Aqua", "DifferentiationInterface", "ForwardDiff", "ModelingToolkit", "Random", "ReverseDiff", "Test", "SparseArrays", "Symbolics", "Zygote", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "ADTypes", "Aqua", "DifferentiationInterface", "ForwardDiff", "ModelingToolkit", "Random", "ReverseDiff", "Test", "SparseArrays", "Symbolics", "Zygote", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationMadNLP/test/qa/Project.toml b/lib/OptimizationMadNLP/test/qa/Project.toml
index c293c363f..ebd81a049 100644
--- a/lib/OptimizationMadNLP/test/qa/Project.toml
+++ b/lib/OptimizationMadNLP/test/qa/Project.toml
@@ -1,4 +1,6 @@
 [deps]
+OptimizationNLPModels = "064b21be-54cf-11ef-1646-cdfee32b588f"
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationMadNLP = "5d9c809f-c847-4062-9fba-1793bbfef577"
@@ -6,9 +8,12 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationMadNLP = {path = "../.."}
+OptimizationNLPModels = {path = "../../../OptimizationNLPModels"}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationNLPModels = "1"
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationMadNLP/test/runtests.jl b/lib/OptimizationMadNLP/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationMadNLP/test/runtests.jl
+++ b/lib/OptimizationMadNLP/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationManopt/Project.toml b/lib/OptimizationManopt/Project.toml
index 194d478a7..b24a31bdd 100644
--- a/lib/OptimizationManopt/Project.toml
+++ b/lib/OptimizationManopt/Project.toml
@@ -14,6 +14,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 DifferentiationInterface = "a0c0ee7d-e4b9-4e03-894e-1c5f64a51d63"
 Enzyme = "7da242da-08ed-463a-9acd-ee780be4f1d9"
@@ -33,6 +34,7 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 Aqua = "0.8"
 Pkg = "1"
 QuadraticModels = "0.9"
@@ -59,4 +61,4 @@ Reexport = "1.2"
 SciMLBase = "2.122.1, 3"
 
 [targets]
-test = ["DifferentiationInterface", "Enzyme", "ForwardDiff", "FiniteDiff", "QuadraticModels", "Random", "ReverseDiff", "RipQP", "Test", "Zygote", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "DifferentiationInterface", "Enzyme", "ForwardDiff", "FiniteDiff", "QuadraticModels", "Random", "ReverseDiff", "RipQP", "Test", "Zygote", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationManopt/test/qa/Project.toml b/lib/OptimizationManopt/test/qa/Project.toml
index 9da1ade91..31d2f072a 100644
--- a/lib/OptimizationManopt/test/qa/Project.toml
+++ b/lib/OptimizationManopt/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationManopt = "e57b7fff-7ee7-4550-b4f0-90e9476e9fb6"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationManopt = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationManopt/test/runtests.jl b/lib/OptimizationManopt/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationManopt/test/runtests.jl
+++ b/lib/OptimizationManopt/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationMetaheuristics/Project.toml b/lib/OptimizationMetaheuristics/Project.toml
index 87079f181..21d3f5992 100644
--- a/lib/OptimizationMetaheuristics/Project.toml
+++ b/lib/OptimizationMetaheuristics/Project.toml
@@ -9,6 +9,7 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
@@ -18,6 +19,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 julia = "1.10"
@@ -29,4 +31,4 @@ Random = "1.10"
 Test = "1.10"
 
 [targets]
-test = ["Random", "Test", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Random", "Test", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationMetaheuristics/test/qa/Project.toml b/lib/OptimizationMetaheuristics/test/qa/Project.toml
index 442c6bab3..0b6a26662 100644
--- a/lib/OptimizationMetaheuristics/test/qa/Project.toml
+++ b/lib/OptimizationMetaheuristics/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationMetaheuristics = "3aafef2f-86ae-4776-b337-85a36adf0b55"
@@ -7,9 +8,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationMetaheuristics = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationMetaheuristics/test/runtests.jl b/lib/OptimizationMetaheuristics/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationMetaheuristics/test/runtests.jl
+++ b/lib/OptimizationMetaheuristics/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationMultistartOptimization/Project.toml b/lib/OptimizationMultistartOptimization/Project.toml
index 59e13751d..a22a6bebb 100644
--- a/lib/OptimizationMultistartOptimization/Project.toml
+++ b/lib/OptimizationMultistartOptimization/Project.toml
@@ -9,6 +9,7 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
@@ -21,6 +22,7 @@ OptimizationBase = {path = "../OptimizationBase"}
 OptimizationNLopt = {path = "../OptimizationNLopt"}
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 julia = "1.10"
@@ -34,4 +36,4 @@ ReverseDiff = "1"
 Test = "1.10"
 
 [targets]
-test = ["ForwardDiff", "OptimizationNLopt", "ReverseDiff", "Pkg", "Test", "SafeTestsets"]
+test = ["SciMLTesting", "ForwardDiff", "OptimizationNLopt", "ReverseDiff", "Pkg", "Test", "SafeTestsets"]
diff --git a/lib/OptimizationMultistartOptimization/test/qa/Project.toml b/lib/OptimizationMultistartOptimization/test/qa/Project.toml
index ab9d585f0..1d2c74daa 100644
--- a/lib/OptimizationMultistartOptimization/test/qa/Project.toml
+++ b/lib/OptimizationMultistartOptimization/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationMultistartOptimization = "e4316d97-8bbb-4fd3-a7d8-3851d2a72823"
@@ -7,9 +8,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationMultistartOptimization = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationMultistartOptimization/test/runtests.jl b/lib/OptimizationMultistartOptimization/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationMultistartOptimization/test/runtests.jl
+++ b/lib/OptimizationMultistartOptimization/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationNLPModels/Project.toml b/lib/OptimizationNLPModels/Project.toml
index 0b1ec8c04..ddb73a32d 100644
--- a/lib/OptimizationNLPModels/Project.toml
+++ b/lib/OptimizationNLPModels/Project.toml
@@ -18,6 +18,7 @@ OptimizationMOI = {path = "../OptimizationMOI"}
 OptimizationOptimJL = {path = "../OptimizationOptimJL"}
 
 [compat]
+SciMLTesting = "2.1"
 ADTypes = "1.18"
 Ipopt = "1"
 NLPModels = "0.21"
@@ -37,6 +38,7 @@ Zygote = "0.6, 0.7"
 julia = "1.10"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Ipopt = "b6b21f68-93f8-5de0-b562-5493be1d77c9"
@@ -49,4 +51,4 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [targets]
-test = ["Test", "NLPModelsTest", "OptimizationOptimJL", "ReverseDiff", "Zygote", "Ipopt", "OptimizationMOI", "OptimizationLBFGSB", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Test", "NLPModelsTest", "OptimizationOptimJL", "ReverseDiff", "Zygote", "Ipopt", "OptimizationMOI", "OptimizationLBFGSB", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationNLPModels/test/qa/Project.toml b/lib/OptimizationNLPModels/test/qa/Project.toml
index 4eda8662b..9f10cb680 100644
--- a/lib/OptimizationNLPModels/test/qa/Project.toml
+++ b/lib/OptimizationNLPModels/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationNLPModels = "064b21be-54cf-11ef-1646-cdfee32b588f"
@@ -7,9 +8,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationNLPModels = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationNLPModels/test/runtests.jl b/lib/OptimizationNLPModels/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationNLPModels/test/runtests.jl
+++ b/lib/OptimizationNLPModels/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationNLopt/Project.toml b/lib/OptimizationNLopt/Project.toml
index 6226e85b4..2f1f89d16 100644
--- a/lib/OptimizationNLopt/Project.toml
+++ b/lib/OptimizationNLopt/Project.toml
@@ -11,6 +11,7 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
@@ -21,6 +22,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 julia = "1.10"
@@ -34,4 +36,4 @@ Test = "1.10"
 Zygote = "0.6, 0.7"
 
 [targets]
-test = ["ReverseDiff", "Test", "Zygote", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "ReverseDiff", "Test", "Zygote", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationNLopt/test/qa/Project.toml b/lib/OptimizationNLopt/test/qa/Project.toml
index 690ffac8f..bec2f234a 100644
--- a/lib/OptimizationNLopt/test/qa/Project.toml
+++ b/lib/OptimizationNLopt/test/qa/Project.toml
@@ -9,7 +9,6 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
 OptimizationBase = {path = "../../../OptimizationBase"}
-OptimizationNLopt = {path = "../.."}
 
 [compat]
 Aqua = "0.8"
diff --git a/lib/OptimizationNLopt/test/qa/qa.jl b/lib/OptimizationNLopt/test/qa/qa.jl
index 3f58fc4b5..ba2b695bf 100644
--- a/lib/OptimizationNLopt/test/qa/qa.jl
+++ b/lib/OptimizationNLopt/test/qa/qa.jl
@@ -50,6 +50,14 @@ run_qa(
             :AutoSparsePolyesterForwardDiff,
             :AutoSparseReverseDiff,
             :AutoSparseZygote,
+            :DEFAULT_CALLBACK,
+            :DEFAULT_DATA,
+            :IncompatibleOptimizerError,
+            :MaxSense,
+            :MinSense,
+            :ObjSense,
+            :OptimizationCache,
+            :OptimizerMissingError,
             :ForcedStop,
             :NLOPT_VERSION,
             :Opt,
diff --git a/lib/OptimizationNLopt/test/runtests.jl b/lib/OptimizationNLopt/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationNLopt/test/runtests.jl
+++ b/lib/OptimizationNLopt/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationNOMAD/Project.toml b/lib/OptimizationNOMAD/Project.toml
index b5667cd2c..5934199b3 100644
--- a/lib/OptimizationNOMAD/Project.toml
+++ b/lib/OptimizationNOMAD/Project.toml
@@ -12,6 +12,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 LogExpFunctions = "2ab3a3ac-af41-5b50-aa03-7779005ae688"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
@@ -20,6 +21,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 LogExpFunctions = "0.3.28"
 SafeTestsets = "0.1"
@@ -31,4 +33,4 @@ Reexport = "1.2"
 Test = "1.10"
 
 [targets]
-test = ["Test", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Test", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationNOMAD/test/qa/Project.toml b/lib/OptimizationNOMAD/test/qa/Project.toml
index 8c2d05f40..78a5daafb 100644
--- a/lib/OptimizationNOMAD/test/qa/Project.toml
+++ b/lib/OptimizationNOMAD/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationNOMAD = "2cab0595-8222-4775-b714-9828e6a9e01b"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationNOMAD = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationNOMAD/test/runtests.jl b/lib/OptimizationNOMAD/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationNOMAD/test/runtests.jl
+++ b/lib/OptimizationNOMAD/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationODE/Project.toml b/lib/OptimizationODE/Project.toml
index 955bcfa70..d7b9db4d1 100644
--- a/lib/OptimizationODE/Project.toml
+++ b/lib/OptimizationODE/Project.toml
@@ -21,12 +21,14 @@ DiffEqBase = "2b5f629d-d688-5b77-993f-72d75c75574e"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Sundials = "c3572dad-4567-51f8-b174-8c6c989267f4"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 
 [compat]
+SciMLTesting = "2.1"
 ADTypes = "1.18"
 DiffEqBase = "7"
 ForwardDiff = "0.10, 1"
@@ -49,7 +51,7 @@ Test = "1.10"
 julia = "1.10"
 
 [targets]
-test = ["Sundials", "Test", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Sundials", "Test", "SafeTestsets", "Pkg"]
 
 [sources.OptimizationBase]
 path = "../OptimizationBase"
diff --git a/lib/OptimizationODE/test/qa/Project.toml b/lib/OptimizationODE/test/qa/Project.toml
index 38a5a8461..89bdfe096 100644
--- a/lib/OptimizationODE/test/qa/Project.toml
+++ b/lib/OptimizationODE/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationODE = "dfa73e59-e644-4d8a-bf84-188d7ecb34e4"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationODE = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationODE/test/runtests.jl b/lib/OptimizationODE/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationODE/test/runtests.jl
+++ b/lib/OptimizationODE/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationOptimJL/Project.toml b/lib/OptimizationOptimJL/Project.toml
index 2aad94f4a..262cfa387 100644
--- a/lib/OptimizationOptimJL/Project.toml
+++ b/lib/OptimizationOptimJL/Project.toml
@@ -10,6 +10,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
@@ -20,6 +21,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 ModelingToolkit = "961ee093-0014-501f-94e3-6117800e7a78"
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 julia = "1.10"
@@ -39,4 +41,4 @@ Zygote = "0.6, 0.7"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [targets]
-test = ["ForwardDiff", "ModelingToolkit", "Random", "ReverseDiff", "Test", "Zygote", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "ForwardDiff", "ModelingToolkit", "Random", "ReverseDiff", "Test", "Zygote", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationOptimJL/test/qa/Project.toml b/lib/OptimizationOptimJL/test/qa/Project.toml
index 827566e1f..5487b2c90 100644
--- a/lib/OptimizationOptimJL/test/qa/Project.toml
+++ b/lib/OptimizationOptimJL/test/qa/Project.toml
@@ -9,7 +9,6 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
 OptimizationBase = {path = "../../../OptimizationBase"}
-OptimizationOptimJL = {path = "../.."}
 
 [compat]
 Aqua = "0.8"
diff --git a/lib/OptimizationOptimJL/test/runtests.jl b/lib/OptimizationOptimJL/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationOptimJL/test/runtests.jl
+++ b/lib/OptimizationOptimJL/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationOptimisers/Project.toml b/lib/OptimizationOptimisers/Project.toml
index 816ec2d73..ea725d095 100644
--- a/lib/OptimizationOptimisers/Project.toml
+++ b/lib/OptimizationOptimisers/Project.toml
@@ -14,6 +14,7 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 Logging = "1.10"
@@ -33,6 +34,7 @@ Test = "1.10"
 Zygote = "0.6, 0.7"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ComponentArrays = "b0b7db55-cfe3-40fc-9ded-d10e2dbeff66"
@@ -46,4 +48,4 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [targets]
-test = ["ComponentArrays", "ForwardDiff", "Lux", "MLDataDevices", "MLUtils", "Random", "Test", "Zygote", "Printf", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "ComponentArrays", "ForwardDiff", "Lux", "MLDataDevices", "MLUtils", "Random", "Test", "Zygote", "Printf", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationOptimisers/test/qa/Project.toml b/lib/OptimizationOptimisers/test/qa/Project.toml
index 1f25ac4c1..eae021ca2 100644
--- a/lib/OptimizationOptimisers/test/qa/Project.toml
+++ b/lib/OptimizationOptimisers/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationOptimisers = "42dfb2eb-d2b4-4451-abcd-913932933ac1"
@@ -7,9 +8,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationOptimisers = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationOptimisers/test/runtests.jl b/lib/OptimizationOptimisers/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationOptimisers/test/runtests.jl
+++ b/lib/OptimizationOptimisers/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationPRIMA/Project.toml b/lib/OptimizationPRIMA/Project.toml
index 4b5081636..1ec7ad0a7 100644
--- a/lib/OptimizationPRIMA/Project.toml
+++ b/lib/OptimizationPRIMA/Project.toml
@@ -9,6 +9,7 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
@@ -17,6 +18,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 ModelingToolkit = "961ee093-0014-501f-94e3-6117800e7a78"
 
 [compat]
+SciMLTesting = "2.1"
 ForwardDiff = "0.10, 1"
 ModelingToolkit = "11"
 OptimizationBase = "5.1"
@@ -33,4 +35,4 @@ julia = "1.10"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [targets]
-test = ["Test", "ForwardDiff", "ModelingToolkit", "ReverseDiff", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Test", "ForwardDiff", "ModelingToolkit", "ReverseDiff", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationPRIMA/test/qa/Project.toml b/lib/OptimizationPRIMA/test/qa/Project.toml
index 792eb4ae5..558bdc520 100644
--- a/lib/OptimizationPRIMA/test/qa/Project.toml
+++ b/lib/OptimizationPRIMA/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationPRIMA = "72f8369c-a2ea-4298-9126-56167ce9cbc2"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationPRIMA = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationPRIMA/test/runtests.jl b/lib/OptimizationPRIMA/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationPRIMA/test/runtests.jl
+++ b/lib/OptimizationPRIMA/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationPolyalgorithms/Project.toml b/lib/OptimizationPolyalgorithms/Project.toml
index b7b23c385..8c1ecb0bf 100644
--- a/lib/OptimizationPolyalgorithms/Project.toml
+++ b/lib/OptimizationPolyalgorithms/Project.toml
@@ -10,6 +10,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 OptimizationOptimJL = "36348300-93cb-4f02-beb5-3c3902f8871e"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
@@ -21,6 +22,7 @@ OptimizationOptimisers = {path = "../OptimizationOptimisers"}
 OptimizationOptimJL = {path = "../OptimizationOptimJL"}
 
 [compat]
+SciMLTesting = "2.1"
 ForwardDiff = "0.10, 1"
 OptimizationBase = "5"
 OptimizationOptimisers = "0.3.16"
@@ -33,4 +35,4 @@ Test = "1.10"
 julia = "1.10"
 
 [targets]
-test = ["ForwardDiff", "Test", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "ForwardDiff", "Test", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationPolyalgorithms/test/qa/Project.toml b/lib/OptimizationPolyalgorithms/test/qa/Project.toml
index 4bcb0a433..2d2127511 100644
--- a/lib/OptimizationPolyalgorithms/test/qa/Project.toml
+++ b/lib/OptimizationPolyalgorithms/test/qa/Project.toml
@@ -1,4 +1,7 @@
 [deps]
+OptimizationOptimisers = "42dfb2eb-d2b4-4451-abcd-913932933ac1"
+OptimizationOptimJL = "36348300-93cb-4f02-beb5-3c3902f8871e"
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationPolyalgorithms = "500b13db-7e66-49ce-bda4-eed966be6282"
@@ -6,9 +9,14 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationPolyalgorithms = {path = "../.."}
+OptimizationOptimisers = {path = "../../../OptimizationOptimisers"}
+OptimizationOptimJL = {path = "../../../OptimizationOptimJL"}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationOptimisers = "0.3"
+OptimizationOptimJL = "0.4"
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationPolyalgorithms/test/runtests.jl b/lib/OptimizationPolyalgorithms/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationPolyalgorithms/test/runtests.jl
+++ b/lib/OptimizationPolyalgorithms/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationPyCMA/Project.toml b/lib/OptimizationPyCMA/Project.toml
index e4d3c36c4..5f85df741 100644
--- a/lib/OptimizationPyCMA/Project.toml
+++ b/lib/OptimizationPyCMA/Project.toml
@@ -10,6 +10,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 PythonCall = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 julia = "1.10"
 OptimizationBase = "5"
@@ -24,9 +25,10 @@ PythonCall = "0.9"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["SafeTestsets", "Pkg", "Test"]
+test = ["SciMLTesting", "SafeTestsets", "Pkg", "Test"]
diff --git a/lib/OptimizationPyCMA/test/qa/Project.toml b/lib/OptimizationPyCMA/test/qa/Project.toml
index 7fa717224..860713a11 100644
--- a/lib/OptimizationPyCMA/test/qa/Project.toml
+++ b/lib/OptimizationPyCMA/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationPyCMA = "fb0822aa-1fe5-41d8-99a6-e7bf6c238d3b"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationPyCMA = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationPyCMA/test/runtests.jl b/lib/OptimizationPyCMA/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationPyCMA/test/runtests.jl
+++ b/lib/OptimizationPyCMA/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationQuadDIRECT/Project.toml b/lib/OptimizationQuadDIRECT/Project.toml
index 34de5029d..302b93739 100644
--- a/lib/OptimizationQuadDIRECT/Project.toml
+++ b/lib/OptimizationQuadDIRECT/Project.toml
@@ -10,11 +10,13 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 julia = "1.10"
 OptimizationBase = "5"
@@ -25,7 +27,7 @@ Reexport = "1.2"
 Test = "1.10"
 
 [targets]
-test = ["Pkg", "Test", "SafeTestsets"]
+test = ["SciMLTesting", "Pkg", "Test", "SafeTestsets"]
 
 [sources.OptimizationBase]
 path = "../OptimizationBase"
diff --git a/lib/OptimizationQuadDIRECT/test/qa/Project.toml b/lib/OptimizationQuadDIRECT/test/qa/Project.toml
index 3a79561ab..ce03b744b 100644
--- a/lib/OptimizationQuadDIRECT/test/qa/Project.toml
+++ b/lib/OptimizationQuadDIRECT/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationQuadDIRECT = "842ac81e-713d-465f-80f7-84eddaced298"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationQuadDIRECT = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationQuadDIRECT/test/runtests.jl b/lib/OptimizationQuadDIRECT/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationQuadDIRECT/test/runtests.jl
+++ b/lib/OptimizationQuadDIRECT/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationSciPy/Project.toml b/lib/OptimizationSciPy/Project.toml
index 08410204b..9416c3b0a 100644
--- a/lib/OptimizationSciPy/Project.toml
+++ b/lib/OptimizationSciPy/Project.toml
@@ -9,6 +9,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 PythonCall = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
@@ -19,6 +20,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 ModelingToolkit = "961ee093-0014-501f-94e3-6117800e7a78"
 
 [compat]
+SciMLTesting = "2.1"
 ForwardDiff = "0.10, 1"
 ModelingToolkit = "11"
 OptimizationBase = "5.1"
@@ -37,4 +39,4 @@ julia = "1.10"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [targets]
-test = ["ForwardDiff", "ModelingToolkit", "Random", "ReverseDiff", "Test", "Zygote", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "ForwardDiff", "ModelingToolkit", "Random", "ReverseDiff", "Test", "Zygote", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationSciPy/test/qa/Project.toml b/lib/OptimizationSciPy/test/qa/Project.toml
index 8445c57f6..d5e2855ae 100644
--- a/lib/OptimizationSciPy/test/qa/Project.toml
+++ b/lib/OptimizationSciPy/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationSciPy = "cce07bd8-c79b-4b00-aee8-8db9cce22837"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationSciPy = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationSciPy/test/runtests.jl b/lib/OptimizationSciPy/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationSciPy/test/runtests.jl
+++ b/lib/OptimizationSciPy/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationSophia/Project.toml b/lib/OptimizationSophia/Project.toml
index e7d06e1cc..27e66dfa3 100644
--- a/lib/OptimizationSophia/Project.toml
+++ b/lib/OptimizationSophia/Project.toml
@@ -9,6 +9,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ComponentArrays = "b0b7db55-cfe3-40fc-9ded-d10e2dbeff66"
@@ -20,6 +21,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [compat]
+SciMLTesting = "2.1"
 Pkg = "1"
 SafeTestsets = "0.1"
 ComponentArrays = "0.15.29"
@@ -39,4 +41,4 @@ julia = "1.10"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [targets]
-test = ["Test", "ComponentArrays", "Lux", "MLUtils", "OrdinaryDiffEqTsit5", "SciMLSensitivity", "Zygote", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Test", "ComponentArrays", "Lux", "MLUtils", "OrdinaryDiffEqTsit5", "SciMLSensitivity", "Zygote", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationSophia/test/qa/Project.toml b/lib/OptimizationSophia/test/qa/Project.toml
index 69ca9bfa0..98d7e4510 100644
--- a/lib/OptimizationSophia/test/qa/Project.toml
+++ b/lib/OptimizationSophia/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationSophia = "892fee11-dca1-40d6-b698-84ba0d87399a"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationSophia = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationSophia/test/runtests.jl b/lib/OptimizationSophia/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationSophia/test/runtests.jl
+++ b/lib/OptimizationSophia/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/OptimizationSpeedMapping/Project.toml b/lib/OptimizationSpeedMapping/Project.toml
index 0d1a93245..642a384e4 100644
--- a/lib/OptimizationSpeedMapping/Project.toml
+++ b/lib/OptimizationSpeedMapping/Project.toml
@@ -9,12 +9,14 @@ SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
+SciMLTesting = "2.1"
 ForwardDiff = "0.10, 1"
 OptimizationBase = "5"
 Pkg = "1"
@@ -29,4 +31,4 @@ julia = "1.10"
 OptimizationBase = {path = "../OptimizationBase"}
 
 [targets]
-test = ["ForwardDiff", "Test", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "ForwardDiff", "Test", "SafeTestsets", "Pkg"]
diff --git a/lib/OptimizationSpeedMapping/test/qa/Project.toml b/lib/OptimizationSpeedMapping/test/qa/Project.toml
index 6521e1822..3d7a869d1 100644
--- a/lib/OptimizationSpeedMapping/test/qa/Project.toml
+++ b/lib/OptimizationSpeedMapping/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 OptimizationSpeedMapping = "3d669222-0d7d-4eb9-8a9f-d8528b0d9b91"
@@ -6,9 +7,10 @@ SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-OptimizationSpeedMapping = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/OptimizationSpeedMapping/test/runtests.jl b/lib/OptimizationSpeedMapping/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/OptimizationSpeedMapping/test/runtests.jl
+++ b/lib/OptimizationSpeedMapping/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"
diff --git a/lib/SimpleOptimization/Project.toml b/lib/SimpleOptimization/Project.toml
index e28daa605..326bca70b 100644
--- a/lib/SimpleOptimization/Project.toml
+++ b/lib/SimpleOptimization/Project.toml
@@ -17,6 +17,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 SimpleNonlinearSolve = "727e6d20-b764-4bd8-a329-72de5adea6c7"
 
 [extras]
+SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
@@ -30,6 +31,7 @@ SimpleOptimizationEnzymeExt = "Enzyme"
 SimpleOptimizationForwardDiffExt = "ForwardDiff"
 
 [compat]
+SciMLTesting = "2.1"
 ADTypes = "1.18"
 DifferentiationInterface = "0.7.13"
 Enzyme = "0.13"
@@ -45,4 +47,4 @@ Test = "1.10"
 julia = "1.10"
 
 [targets]
-test = ["Test", "ForwardDiff", "SafeTestsets", "Pkg"]
+test = ["SciMLTesting", "Test", "ForwardDiff", "SafeTestsets", "Pkg"]
diff --git a/lib/SimpleOptimization/test/qa/Project.toml b/lib/SimpleOptimization/test/qa/Project.toml
index 62ca106ba..a8f4f6590 100644
--- a/lib/SimpleOptimization/test/qa/Project.toml
+++ b/lib/SimpleOptimization/test/qa/Project.toml
@@ -1,4 +1,5 @@
 [deps]
+OptimizationBase = "bca83a33-5cc9-4baa-983d-23429ab6bcbb"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 SciMLTesting = "09d9d899-5365-40a9-917a-5f67fddea283"
@@ -6,9 +7,10 @@ SimpleOptimization = "510db2f7-4254-4e34-bbda-04240c91ca8f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [sources]
-SimpleOptimization = {path = "../.."}
+OptimizationBase = {path = "../../../OptimizationBase"}
 
 [compat]
+OptimizationBase = "5"
 Aqua = "0.8"
 JET = "0.9, 0.10, 0.11"
 julia = "1.10"
diff --git a/lib/SimpleOptimization/test/runtests.jl b/lib/SimpleOptimization/test/runtests.jl
index 89b4c9bae..93f1ade43 100644
--- a/lib/SimpleOptimization/test/runtests.jl
+++ b/lib/SimpleOptimization/test/runtests.jl
@@ -1,17 +1,14 @@
 using Pkg
 using SafeTestsets
+using SciMLTesting
 
 const TEST_GROUP = get(ENV, "OPTIMIZATION_TEST_GROUP", "All")
 
-# QA (Aqua + JET) runs in an isolated environment (test/qa) so its tooling deps
-# never enter the main test target's resolve. On Julia < 1.11 the [sources] table
-# is ignored, so develop the package by path to test the PR branch code.
+# QA (Aqua + JET) runs in an isolated environment (test/qa). activate_group_env
+# develops the package under test (via `parent`) plus its in-repo `[sources]` siblings
+# by path — native `[sources]` on Julia >= 1.11, the develop_sources! backport on 1.10.
 function activate_qa_env()
-    Pkg.activate(joinpath(@__DIR__, "qa"))
-    if VERSION < v"1.11.0-DEV.0"
-        Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
-    end
-    return Pkg.instantiate()
+    return activate_group_env(joinpath(@__DIR__, "qa"))
 end
 
 if TEST_GROUP == "Core" || TEST_GROUP == "All"