}

  public void testStart_whileRunning() {
    stopwatch.start();
    assertThrows(IllegalStateException.class, stopwatch::start);
    assertTrue(stopwatch.isRunning());
  }

  public void testStop() {
    stopwatch.start();
    assertSame(stopwatch, stopwatch.stop());
    assertFalse(stopwatch.isRunning());
  }

  public void testStop_new() {
    assertThrows(IllegalStateException.class, stopwatch::stop);

        // Execute with null params
        dataStore.store(config, callback, null);

        assertTrue(storeCalled.get());
    }

    public void test_stop() {
        // Test stop method
        final AtomicBoolean stopCalled = new AtomicBoolean(false);

        dataStore = new DataStore() {
            @Override

    }
    assertThat(map).containsExactlyEntriesIn(expected).inOrder();
  }

  /** No-op test so that the class has at least one method, making Maven's test runner happy. */
  public void testNoop() {}