tests: remove tests for protobuf cpp backend

Author: parthea

gapic/templates/noxfile.py.j2

@@ -248,27 +248,16 @@ def install_unittest_dependencies(session, *constraints):
 @nox.session(python=ALL_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
-    ["python", "upb", "cpp"],
+    ["python", "upb"],
 )
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove this check once support for Protobuf 3.x is dropped.
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
     # Run py.test against the unit tests.
     session.run(
         "py.test",

tests/integration/goldens/asset/noxfile.py

@@ -246,27 +246,16 @@ def install_unittest_dependencies(session, *constraints):
 @nox.session(python=ALL_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
-    ["python", "upb", "cpp"],
+    ["python", "upb"],
 )
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove this check once support for Protobuf 3.x is dropped.
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
     # Run py.test against the unit tests.
     session.run(
         "py.test",

tests/integration/goldens/credentials/noxfile.py

@@ -246,27 +246,16 @@ def install_unittest_dependencies(session, *constraints):
 @nox.session(python=ALL_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
-    ["python", "upb", "cpp"],
+    ["python", "upb"],
 )
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove this check once support for Protobuf 3.x is dropped.
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
     # Run py.test against the unit tests.
     session.run(
         "py.test",

tests/integration/goldens/eventarc/noxfile.py

@@ -246,27 +246,16 @@ def install_unittest_dependencies(session, *constraints):
 @nox.session(python=ALL_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
-    ["python", "upb", "cpp"],
+    ["python", "upb"],
 )
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove this check once support for Protobuf 3.x is dropped.
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
     # Run py.test against the unit tests.
     session.run(
         "py.test",

tests/integration/goldens/logging/noxfile.py

@@ -246,27 +246,16 @@ def install_unittest_dependencies(session, *constraints):
 @nox.session(python=ALL_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
-    ["python", "upb", "cpp"],
+    ["python", "upb"],
 )
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove this check once support for Protobuf 3.x is dropped.
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
     # Run py.test against the unit tests.
     session.run(
         "py.test",

tests/integration/goldens/logging_internal/noxfile.py

@@ -246,27 +246,16 @@ def install_unittest_dependencies(session, *constraints):
 @nox.session(python=ALL_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
-    ["python", "upb", "cpp"],
+    ["python", "upb"],
 )
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove this check once support for Protobuf 3.x is dropped.
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
     # Run py.test against the unit tests.
     session.run(
         "py.test",

tests/integration/goldens/redis/noxfile.py

@@ -246,27 +246,16 @@ def install_unittest_dependencies(session, *constraints):
 @nox.session(python=ALL_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
-    ["python", "upb", "cpp"],
+    ["python", "upb"],
 )
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove this check once support for Protobuf 3.x is dropped.
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
     # Run py.test against the unit tests.
     session.run(
         "py.test",

tests/integration/goldens/redis_selective/noxfile.py

@@ -246,27 +246,16 @@ def install_unittest_dependencies(session, *constraints):
 @nox.session(python=ALL_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
-    ["python", "upb", "cpp"],
+    ["python", "upb"],
 )
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove this check once support for Protobuf 3.x is dropped.
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
     # Run py.test against the unit tests.
     session.run(
         "py.test",