Question

单元测试设置

@RunWith(PowerMockRunner.class)
@PrepareForTest(PGWService.class)
public class PGWServiceTest {
public static final String TEST_CLIENTTRX_ID = "12345";
public static final int TEST_SITE_ID = 0;
public static final long TEST_USER_ID = 12345L;
public static final int TEST_CURRENCY_ID = 1;
public static final String TEST_ACCOUNT_TYPE = "Test account type";
public static final boolean TEST_IS_DEDUPING = false;
public static final byte[] TEST_SSN_CRYPT = new byte[] { 1, 2, 3 };
public static final byte[] TEST_TAX_ID_CRYPT = new byte[] { 1, 2, 3 };
public static final String TEST_SSN_LAST_FOUR = "1234";
public static final String TEST_TAX_ID_LAST_FOUR = "1234";

@Mock
PGWBaseRequest request;

@Mock
PGWClient client;

PGWService pGWService = new PGWService();

PGWGetAccountTaxIDResponse expectedResponse = this
        .buildGPWGetAccountIdResponse(TEST_SSN_CRYPT, TEST_TAX_ID_CRYPT,
                TEST_SSN_LAST_FOUR, TEST_TAX_ID_LAST_FOUR);

@Before
public void setUp() throws Exception {
    PowerMockito.mockStatic(PGWClient.class);
    PowerMockito.mockStatic(PGWBaseRequest.class);
    PowerMockito.when(PGWClient.getInstance()).thenReturn(client);
    PowerMockito
            .whenNew(PGWBaseRequest.class)
            .withArguments(TEST_CLIENTTRX_ID, TEST_SITE_ID, TEST_USER_ID,
                    TEST_CURRENCY_ID, TEST_ACCOUNT_TYPE, TEST_IS_DEDUPING)
            .thenReturn(request);
    PowerMockito.when(client.getTaxIdInformation(request)).thenReturn(
            expectedResponse);
}

@Test
public void testGetTaxIdInformationHappyPath() throws PGWException {

    PGWGetAccountTaxIDResponse actualResponse = pGWService
            .getTaxIdInformation(TEST_CLIENTTRX_ID, TEST_SITE_ID,
                    TEST_USER_ID, TEST_CURRENCY_ID, TEST_ACCOUNT_TYPE,
                    TEST_IS_DEDUPING);
    Assert.assertEquals(expectedResponse.getSSNLastFour(),
            actualResponse.getSSNLastFour());
}

private PGWGetAccountTaxIDResponse buildGPWGetAccountIdResponse(
        byte[] ssnCrypt, byte[] taxIdCrypt, String ssnLastFour,
        String taxIdLastFour) {
    PGWGetAccountTaxIDResponse response = new PGWGetAccountTaxIDResponse();
    response.setSSNCrypt(ssnCrypt);
    response.setSSNLastFour(ssnLastFour);
    response.setTaxIDCrypt(taxIdCrypt);
    response.setTaxIDLastFour(taxIdLastFour);
    return response;

}

}

我尝试运行单元测试，但在测试中失败并出现以下错误

java.lang.ExceptionInInitializerError at sun.reflect.GeneratedSerializationConstructorAccessor7.newInstance（未知来源）at java.lang.reflect.Constructor.newInstance（Constructor.java:526）at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.newInstance（SunReflectionFactoryInstantiator.java:40）在org.objenesis.ObjenesisBase.newInstance（ObjenesisBase.java:59）at org.mockito.internal.creation.jmock.ClassImposterizer.createProxy（ClassImposterizer.java:128）在 org.mockito.internal.creation.jmock.ClassImposterizer.imposterise（ClassImposterizer.java:63）在 org.powermock.api.mockito.internal.mockcreation.MockCreator.createMethodInvocationControl（MockCreator.java:111）在 org.powermock.api.mockito.internal.mockcreation.MockCreator.mock（MockCreator.java:60）在org.powermock.api.mockito.PowerMockito.mock（PowerMockito.java:143）在 org.powermock.api.extension.listener.AnnotationEnabler.standardInject（AnnotationEnabler.java:84）在 org.powermock.api.extension.listener.AnnotationEnabler.beforeTestMethod（AnnotationEnabler.java:51）在 org.powermock.tests.utils.impl.PowerMockTestNotifierImpl.notifyBeforeTestMethod（PowerMockTestNotifierImpl.java:90）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl $ PowerMockJUnit44MethodRunner.executeTest（PowerMockJUnit44RunnerDelegateImpl.java:292）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl $ PowerMockJUnit47MethodRunner.executeTestInSuper（PowerMockJUnit47RunnerDelegateImpl.java:127）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl $ PowerMockJUnit47MethodRunner.executeTest（PowerMockJUnit47RunnerDelegateImpl.java:82）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl $ PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters（PowerMockJUnit44RunnerDelegateImpl.java:282）在 org.junit.internal.runners.MethodRoadie.runTest（MethodRoadie.java:84）在org.junit.internal.runners.MethodRoadie.run（MethodRoadie.java:49）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod（PowerMockJUnit44RunnerDelegateImpl.java:207）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods（PowerMockJUnit44RunnerDelegateImpl.java:146）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl $ 1.run（PowerMockJUnit44RunnerDelegateImpl.java:120）在 org.junit.internal.runners.ClassRoadie.runUnprotected（ClassRoadie.java:34）在 org.junit.internal.runners.ClassRoadie.runProtected（ClassRoadie.java:44）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run（PowerMockJUnit44RunnerDelegateImpl.java:118）在 org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run（JUnit4TestSuiteChunkerImpl.java:104）在 org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run（AbstractCommonPowerMockRunner.java:53）在 org.powermock.modules.junit4.PowerMockRunner.run（PowerMockRunner.java:53）在 org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run（JUnit4TestReference.java:50）在 org.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:459）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:675）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:382）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main（RemoteTestRunner.java:192）引起：at. java.lang.NullPointerException com.bdd.domain.biz.pgwclient.DynamicConfigListener.getAttributeValue（DynamicConfigListener.java:132）在 com.bdd.domain.biz.pgwclient.PGWCommunicator.init（PGWCommunicator.java:95）在 com.ebay.domain.biz.pgwclient.PGWCommunicator。（PGWCommunicator.java:83）在 com.bdd.domain.biz.pgwclient.PGWCommunicator.getInstance（PGWCommunicator.java:62）在com.bdd.domain.biz.pgwclient.PGWClient。（PGWClient.java:117）

Answer 1

当您尝试使用PowerMock模拟静态方法时，它会在内部创建该类的实例。所以，当你

PowerMockito.mockStatic(PGWClient.class);

在PowerMock中创建了类的新实例。您的PGWClient类默认构造函数此时会执行一些初始化调用静态方法。这会导致静态模拟失败。

你应该检查Power Mock Suppressing Unwanted Behavior

修改的

从堆栈跟踪可以看出PGWClient正在访问实例 PGWCommunicator通过getInstance方法。里面有一些不受欢迎的行为。你可以

使用上面链接中的信息
创建一个默认（包）或受保护的setInstance方法来替换测试期间返回的对象
理想情况下，从单例实例束缚移动到DI。这样的代码是一种更容易测试的方式。

使用Junit

1 个答案: