assertTrue(e instanceof IOException);
            assertTrue(e.getMessage().contains("GCS_PROJECT_ID is blank"));
        }
    }

    /**
     * Test that connect() is idempotent - calling it multiple times should be safe.
     */
    public void test_connect_idempotent() throws Exception {
        URL url = new URL("gcs://mybucket/object.txt");
        Handler handler = new Handler();

            assertTrue(e instanceof IOException);
            assertTrue(e.getMessage().contains("endpoint is blank"));
        }
    }

    /**
     * Test that connect() is idempotent - calling it multiple times should be safe.
     */
    public void test_connect_idempotent() throws Exception {
        URL url = new URL("storage://mybucket/object.txt");
        Handler handler = new Handler();

        // First close
        closeableFactory.destroyObject(pooledObject);
        assertTrue(component.isClosed());

        // Component's close is idempotent, so calling destroy again should not increment counter
        closeableFactory.destroyObject(pooledObject);
        assertEquals(1, CloseableTestComponent.getCloseCount());
    }

    /**