Add overlay migration regression coverage

2026-09-23 18:31:20 +00:00
parent ae91f57bbe
commit 73ce6e9e31
8 changed files with 90 additions and 137 deletions
--- a/internal/engine/explain_test.go
+++ b/internal/engine/explain_test.go
@@ -49,6 +49,12 @@ func TestExplainShowsDefaultBaseAndEffectiveOverlayValue(t *testing.T) {
 		explanation.Origin.Locations[0].Line != 2 {
 		t.Fatalf("effective explanation = %#v", explanation)
 	}
+	var rendered bytes.Buffer
+	if err := result.WriteExplanation(&rendered, Keys("transcription", "concurrency")); err != nil ||
+		!strings.Contains(rendered.String(), `layer="overlay"`) ||
+		!strings.Contains(rendered.String(), `label="overlays/testing.yml"`) {
+		t.Fatalf("rendered explanation = %v\n%s", err, rendered.String())
+	}
 }

 type explanationConfig struct {