chore: add example using integration test

Author: not-matthias

.github/workflows/ci.yml

@@ -67,7 +67,7 @@ jobs:
     runs-on: codspeed-macro
     strategy:
       matrix:
-        target: [example, example/compat, example/timing, example/very/nested/module]
+        target: [example, example/compat, example/timing, example/very/nested/module, example/external]
     steps:
       - uses: actions/checkout@v4
         with:

example/external/external_test.go

@@ -0,0 +1,15 @@
+// This file uses the _test package suffix, which is a common Go pattern
+// for black-box testing. This tests the public API of the math package
+// without accessing internal implementation details.
+package external_test
+
+import (
+	"example"
+	"testing"
+)
+
+func BenchmarkExternalFib(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		example.Fibonacci(5)
+	}
+}

example/fib.go

@@ -6,3 +6,5 @@ func fibonacci(n int) int {
 	}
 	return fibonacci(n-1) + fibonacci(n-2)
 }
+
+var Fibonacci = fibonacci

go-runner/src/builder/snapshots/codspeed_go_runner__builder__discovery__tests__discover_benchmarks@example.snap

@@ -149,6 +149,27 @@ expression: packages
       }
     ]
   },
+  {
+    "raw_package": "[raw_package]",
+    "benchmarks": [
+      {
+        "name": "BenchmarkAdd",
+        "module_path": "example/external",
+        "import_alias": "benchmarkadd_8141020470883116639",
+        "qualified_name": "benchmarkadd_8141020470883116639.BenchmarkAdd",
+        "file_path": "external/math_test.go",
+        "is_external": true
+      },
+      {
+        "name": "BenchmarkMultiply",
+        "module_path": "example/external",
+        "import_alias": "benchmarkmultiply_8141020470883116639",
+        "qualified_name": "benchmarkmultiply_8141020470883116639.BenchmarkMultiply",
+        "file_path": "external/math_test.go",
+        "is_external": true
+      }
+    ]
+  },
   {
     "raw_package": "[raw_package]",
     "benchmarks": [

go-runner/src/snapshots/codspeed_go_runner__integration_tests__assert_results_snapshots@example.snap

@@ -3,6 +3,40 @@ source: go-runner/src/integration_tests.rs
 expression: results
 ---
 [
+  {
+    "creator": {
+      "name": "codspeed-go",
+      "version": "[version]",
+      "pid": "[pid]"
+    },
+    "instrument": {
+      "type": "walltime"
+    },
+    "benchmarks": [
+      {
+        "name": "BenchmarkAdd",
+        "uri": "example/external/codspeed/math_test.go::BenchmarkAdd",
+        "config": {
+          "warmup_time_ns": null,
+          "min_round_time_ns": null,
+          "max_time_ns": null,
+          "max_rounds": null
+        },
+        "stats": "[stats]"
+      },
+      {
+        "name": "BenchmarkMultiply",
+        "uri": "example/external/codspeed/math_test.go::BenchmarkMultiply",
+        "config": {
+          "warmup_time_ns": null,
+          "min_round_time_ns": null,
+          "max_time_ns": null,
+          "max_rounds": null
+        },
+        "stats": "[stats]"
+      }
+    ]
+  },
   {
     "creator": {
       "name": "codspeed-go",