Function TestResolveIncludePath_AllPathStyles

pkg/parser/frontmatter_utils_test.go:348–544

TestResolveIncludePath_AllPathStyles exercises every path style that ResolveIncludePath must handle: - Explicit current-dir-relative ("./file.md") - Standard relative ("file.md", "subdir/file.md") - .github/-prefixed repo-root (".github/agents/planner.md") - /.github/-prefixed repo

(t *testing.T)

//   - baseDir without .github parent (plain relative fallback)
//   - Windows-style backslash paths  (normalized via filepath.ToSlash on Windows)
func TestResolveIncludePath_AllPathStyles(t *testing.T) {
	tempDir, err := os.MkdirTemp("", "test_all_path_styles")
	require.NoError(t, err, "should create temp dir")
	defer os.RemoveAll(tempDir)

	// Build a full repo layout:
	//   <tempDir>/repo/
	//     .github/
	//       workflows/
	//         workflow.md
	//         sub/
	//           nested.md
	//       agents/
	//         planner.md
	//         sub/
	//           nested.md
	//     .agents/
	//       agent.md
	//       sub/
	//         nested.md
	repoRoot := filepath.Join(tempDir, "repo")
	workflowsDir := filepath.Join(repoRoot, ".github", "workflows")
	workflowsSubDir := filepath.Join(workflowsDir, "sub")
	agentsDir := filepath.Join(repoRoot, ".github", "agents")
	agentsSubDir := filepath.Join(agentsDir, "sub")
	dotAgentsDir := filepath.Join(repoRoot, ".agents")
	dotAgentsSubDir := filepath.Join(dotAgentsDir, "sub")

	for _, dir := range []string{workflowsSubDir, agentsSubDir, dotAgentsSubDir} {
		require.NoError(t, os.MkdirAll(dir, 0755), "should create dir %s", dir)
	}

	workflowFile := filepath.Join(workflowsDir, "workflow.md")
	workflowNestedFile := filepath.Join(workflowsSubDir, "nested.md")
	agentFile := filepath.Join(agentsDir, "planner.md")
	agentNestedFile := filepath.Join(agentsSubDir, "nested.md")
	dotAgentFile := filepath.Join(dotAgentsDir, "agent.md")
	dotAgentNestedFile := filepath.Join(dotAgentsSubDir, "nested.md")

	for _, f := range []string{workflowFile, workflowNestedFile, agentFile, agentNestedFile, dotAgentFile, dotAgentNestedFile} {
		require.NoError(t, os.WriteFile(f, []byte("test"), 0644), "should write %s", f)
	}

	// A directory outside any .github tree for the "no ancestor" tests.
	noGithubDir := filepath.Join(tempDir, "standalone")
	require.NoError(t, os.MkdirAll(noGithubDir, 0755), "should create standalone dir")
	standaloneFile := filepath.Join(noGithubDir, "helper.md")
	require.NoError(t, os.WriteFile(standaloneFile, []byte("test"), 0644), "should write standalone file")

	tests := []struct {
		name     string
		filePath string
		baseDir  string
		expected string
		wantErr  bool
	}{
		// ── Standard relative paths ─────────────────────────────────────────────
		{