fix: error in project with folder that ends with .go

go-runner/src/builder/patcher.rs

@@ -38,6 +38,11 @@ pub fn patch_imports<P: AsRef<Path>>(folder: P) -> anyhow::Result<()> {
 
     let pattern = folder.join("**/*.go");
     for go_file in glob::glob(pattern.to_str().unwrap())?.filter_map(Result::ok) {
+        // Skip directories - glob can match directories ending in .go (e.g., vendor/github.com/nats-io/nats.go)
+        if !go_file.is_file() {
+            continue;
+        }
+
         let content =
             fs::read_to_string(&go_file).context(format!("Failed to read Go file: {go_file:?}"))?;
 

go-runner/src/integration_tests.rs

@@ -77,6 +77,7 @@ fn assert_results_snapshots(profile_dir: &Path, project_name: &str) {
 #[case::example("example")]
 #[case::example_with_helper("example-with-helper")]
 #[case::example_with_main("example-with-main")]
+#[case::example_with_dot_go_folder("example-with-dot-go-folder")]
 #[test_log::test]
 fn test_build_and_run(#[case] project_name: &str) {
     let project_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"))

go-runner/src/snapshots/codspeed_go_runner__integration_tests__assert_results_snapshots@example-with-dot-go-folder.snap

@@ -0,0 +1,52 @@
+---
+source: go-runner/src/integration_tests.rs
+expression: results
+---
+[
+  {
+    "creator": {
+      "name": "codspeed-go",
+      "version": "[version]",
+      "pid": "[pid]"
+    },
+    "instrument": {
+      "type": "walltime"
+    },
+    "benchmarks": [
+      {
+        "name": "BenchmarkExample",
+        "uri": "go-runner/testdata/projects/example-with-dot-go-folder/bench_test.go::BenchmarkExample",
+        "config": {
+          "warmup_time_ns": null,
+          "min_round_time_ns": null,
+          "max_time_ns": null,
+          "max_rounds": null
+        },
+        "stats": "[stats]"
+      }
+    ]
+  },
+  {
+    "creator": {
+      "name": "codspeed-go",
+      "version": "[version]",
+      "pid": "[pid]"
+    },
+    "instrument": {
+      "type": "walltime"
+    },
+    "benchmarks": [
+      {
+        "name": "BenchmarkInsideFolder",
+        "uri": "go-runner/testdata/projects/example-with-dot-go-folder/some_package.go/bench_test.go::BenchmarkInsideFolder",
+        "config": {
+          "warmup_time_ns": null,
+          "min_round_time_ns": null,
+          "max_time_ns": null,
+          "max_rounds": null
+        },
+        "stats": "[stats]"
+      }
+    ]
+  }
+]

go-runner/testdata/projects/example-with-dot-go-folder/bench_test.go

@@ -0,0 +1,9 @@
+package dotgofoldertest
+
+import "testing"
+
+func BenchmarkExample(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		_ = i * 2
+	}
+}

go-runner/testdata/projects/example-with-dot-go-folder/go.mod

@@ -0,0 +1,3 @@
+module example.com/dot-go-folder-test
+
+go 1.24

go-runner/testdata/projects/example-with-dot-go-folder/some_package.go/bench_test.go

@@ -0,0 +1,9 @@
+package somepackage
+
+import "testing"
+
+func BenchmarkInsideFolder(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		_ = i * 3
+	}
+}