java - 模拟未被注入(inject)

Question

我正在尝试为单元测试注入(inject)模拟，但我不断收到空点异常。

我要测试的类在下面，空指针似乎与 ParameterFacade 一起。

当我运行测试时，它似乎没有注入(inject)模拟，因为 ParameterFacade 为空。

@Service
public class PostUnderwriterTransactionProcessProvider extends AbstractProcessProvider<PostUnderwriterTransactionInput> {

    @Autowired
    private ParameterFacade parameterService;

    @Override
    public Page startProcess(PostUnderwriterTransactionInput processInput) {

        final PostUnderwriterTransactionContext context = new PostUnderwriterTransactionContext(processInput.getPolicy(),
                setupStrataContextModel(POST_TRANSACTIONS),
                processInput.getTransactionsTypes(),
                processInput.getParameterSelectionCriteria(),
                parameterService.shouldApplyCommissionFromPolicy());

        context.setPostingFromInput(processInput.getAccount().getBalance(),
                processInput.getAccount().getID(),
                getBranch(),
                processInput.getPolicy(),
                processInput.getProcess(),

                null);

        return new AdhocTransactionPostingPage(new TransactionPostingContextModel(context));
    }

}

测试是

@RunWith(MockitoJUnitRunner.class)
public class PostUnderwriterTransactionProcessProviderTest extends WicketTestCase {

    @ClassRule
    public static MetadataServiceRule metadataServiceRule = new MetadataServiceRule();

    @Mock
    private ParameterFacade mockParameterService;

    @InjectMocks
    private PostUnderwriterTransactionProcessProvider testSubject;


    @Before
    public void setup() {
        tester.putBean(mockConversationScopeManager);
        testSubject = new PostUnderwriterTransactionProcessProvider();
        policy = PolicyTestDataBuilder.aPolicy().build();
        account = createAccount();
        testSubject.setUserInfoProvider(MockUserInfoPartyProvider.getMockUserInfoProvider());
        testSubject.setSystemPartyFacade(MockUserInfoPartyProvider.getMockSystemPartyFacade());
        testSubject.setCodeModelFacade(codeModelFacade);
    }

    @Test
    public void startProcessShouldCreateAdhocTransactionPostingPage() {
        // Given
        when(mockParameterService.shouldApplyCommissionFromPolicy()).thenReturn(true);
        final ParameterSelectionCriteriaModel pscm = new ParameterSelectionCriteriaModel();
        final List<TransactionTypeModel> transactions = createTransactionsTypes();
        final PostUnderwriterTransactionInput input = new PostUnderwriterTransactionInput(policy, account, pscm, transactions);

        // When
        final Page page = testSubject.startProcess(input);

        // Then
        assertThat(page, instanceOf(AdhocTransactionPostingPage.class));
        assertThat("Page Default Model is: ", page.getDefaultModelObject(), instanceOf(PostUnderwriterTransactionContext.class));
        assertPageContextValues(page);
    }
}

Answer 1

    1. ParameterFacade is a spring container managed bean (as it is annotated with @Service and other spring annotations like @Autowired).
    2. @RunWith is configured to use MockitoJUnitRunner which cannot instantiate spring managed container beans

    Hence, in order to handle bean lifecycle in unit tests you'll need to
    1. Use @RunWith(SpringJUnit4ClassRunner.class)
    2. Annotate PostUnderwriterTransactionProcessProvider with @Autowired.
    3. Change @Mock to @MockBean on ParameterFacade (org.springframework.boot.test.mock.mockito.MockBean)