@Test
public void shouldGetTheSubListOfFailedResults() throws Exception {

    final SuspensionResult suspensionResult_1 = mock(SuspensionResult.class);
    final SuspensionResult suspensionResult_2 = mock(SuspensionResult.class);
    final SuspensionResult suspensionResult_3 = mock(SuspensionResult.class);
    final SuspensionResult suspensionResult_4 = mock(SuspensionResult.class);
    when(suspensionResult_1.getCommandState()).thenReturn(COMMAND_FAILED);
    when(suspensionResult_2.getCommandState()).thenReturn(COMMAND_COMPLETE);
    when(suspensionResult_3.getCommandState()).thenReturn(COMMAND_FAILED);
    when(suspensionResult_4.getCommandState()).thenReturn(COMMAND_IN_PROGRESS);
    final List<SuspensionResult> failedResults = suspensionResultsMapper.getFailedResults(asList(
            suspensionResult_1,
            suspensionResult_2,
            suspensionResult_3,
            suspensionResult_4));
    assertThat(failedResults.size(), is(2));
    assertThat(failedResults, hasItem(suspensionResult_1));
    assertThat(failedResults, hasItem(suspensionResult_3));
}