refac: missing mutation tests, spa specs, checks shown to pass, touch targets, catalogue entry, production code

test/not_found_errors_test.go

@@ -26,10 +26,15 @@ import (
 
 func openInMemoryDb(t *testing.T) *gorm.DB {
 	t.Helper()
-	db, err := gorm.Open(sqlite.Open("file:"+t.Name()+"?mode=memory&cache=shared"), &gorm.Config{})
+	db, err := gorm.Open(sqlite.Open(uniqueMemoryDSN()), &gorm.Config{})
 	if err != nil {
 		t.Fatalf("failed to open in-memory database: %v", err)
 	}
+	t.Cleanup(func() {
+		if sqlDB, err := db.DB(); err == nil {
+			_ = sqlDB.Close()
+		}
+	})
 	return db
 }