@Test
public void unRegisterTestToolsCallback() {

    DefaultPlaceRequest request = new DefaultPlaceRequest(TestToolsPresenter.IDENTIFIER);
    List<Command> commands = spy(new ArrayList<>());
    commands.add(populateTestToolsCommand);
    assertTrue(commands.contains(populateTestToolsCommand));
    when(placeManagerMock.getOnOpenCallbacks(request)).thenReturn(commands);
    scenarioSimulationEditorBusinessClientWrapper.unRegisterTestToolsCallback();
    verify(placeManagerMock, times(1)).getOnOpenCallbacks(eq(request));
    assertFalse(commands.contains(populateTestToolsCommand));
}