Move Generation Destinations

internal/project/project_test.go

@@ -82,6 +82,29 @@ func TestTopDataAssetsDirReturnsEmptyForNoConfig(t *testing.T) {
 	}
 }
 
+func TestValidateLayoutCreatesMissingCacheAssetsDir(t *testing.T) {
+	root := t.TempDir()
+	mkdirAll(t, filepath.Join(root, "src"))
+	mkdirAll(t, filepath.Join(root, "build"))
+
+	proj := &Project{
+		Root: root,
+		Config: Config{
+			Module: ModuleConfig{Name: "Test", ResRef: "test"},
+			Paths:  PathConfig{Source: "src", Assets: ".cache/module-assets", Build: "build"},
+		},
+	}
+
+	if err := proj.ValidateLayout(); err != nil {
+		t.Fatalf("ValidateLayout returned error: %v", err)
+	}
+	if info, err := os.Stat(filepath.Join(root, ".cache", "module-assets")); err != nil {
+		t.Fatalf("expected cache assets dir to be created: %v", err)
+	} else if !info.IsDir() {
+		t.Fatalf("expected cache assets path to be a directory")
+	}
+}
+
 func mkdirAll(t *testing.T, path string) {
 	t.Helper()
 	if err := os.MkdirAll(path, 0o755); err != nil {