org.powermock.api.mockito.ClassNotPreparedException 声明为准备就绪时

Question

我不明白为什么会出现这种情况，因为我的测试明确要求 PowerMock 做好准备。

@PrepareForTest({AmazonSQSClientBuilder.class})
@RunWith(PowerMockRunner.class)
@PowerMockIgnore({"javax.*", "org.apache.logging.*"})
class EncodingAdapterTest {

    ...
    private AmazonSQSClientBuilder sqsBuilder;
    private AmazonSQS sqsClient;
    private AmazonSNS snsClient;
    private SendMessageResult sqsResult;
    private PublishResult snsResult;

    @BeforeEach
    void setUp() {
       
        sqsClient = PowerMockito.mock(AmazonSQS.class);
        PowerMockito.mockStatic(AmazonSQSClientBuilder.class);
        AmazonSQSClientBuilder mockBuilder = PowerMockito.mock(AmazonSQSClientBuilder.class);
        PowerMockito.when(AmazonSQSClientBuilder.standard()).thenReturn(mockBuilder);
        sqsBuilder = PowerMockito.mock(AmazonSQSClientBuilder.class);
    }

虽然我一开始就有

@PrepareForTest({AmazonSQSClientBuilder.class})

，但它显示第

PowerMockito.mockStatic(AmazonSQSClientBuilder.class);

行的错误。

错误如下：

[Ljava.lang.Object;@259661b4
The class com.amazonaws.services.sqs.AmazonSQSClientBuilder not prepared for test.
org.powermock.api.mockito.ClassNotPreparedException: 

[Ljava.lang.Object;@259661b4
The class com.amazonaws.services.sqs.AmazonSQSClientBuilder not prepared for test.
    at org.powermock.api.mockito.expectation.reporter.MockitoPowerMockReporter.classNotPrepared(MockitoPowerMockReporter.java:29)
    at org.powermock.api.mockito.internal.mockcreation.MockTypeValidatorFactory$DefaultMockTypeValidator.validate(MockTypeValidatorFactory.java:37)
    at org.powermock.api.mockito.internal.mockcreation.AbstractMockCreator.validateType(AbstractMockCreator.java:10)
    at org.powermock.api.mockito.internal.mockcreation.DefaultMockCreator.createMock(DefaultMockCreator.java:49)
    at org.powermock.api.mockito.internal.mockcreation.DefaultMockCreator.mock(DefaultMockCreator.java:40)
    at org.powermock.api.mockito.PowerMockito.mockStatic(PowerMockito.java:62)
    at package.adapters.EncodingAdapterTest.setUp(EncodingAdapterTest.java:76)

我错过了什么吗？

Answer 1

您可以尝试延长

PowerMockTestCase

。它会解决你的问题。

class EncodingAdapterTest extends PowerMockTestCase 

---

顺便说一句，我建议使用mockito-inline而不是Powermock来模拟静态方法或类。因为它比Powermock更容易、更流行。您可以轻松模拟静态，无需多余的注释，如下所示：

try (MockedStatic<AmazonSQSClientBuilder> builder = Mockito.mockStatic(AmazonSQSClientBuilder.class)) {
        builder.when(() -> AmazonSQSClientBuilder.standard())
        .thenReturn("somthing");
}

参考：https://www.baeldung.com/mockito-mock-static-methods

Answer 2

您正在

mockStactic

中使用

BeforeEach

，请尝试将其放入

Before

。