java - 如何在 SSLContextBuilder.create().loadTrustMaterial 的 JUnit 测试中抛出异常？

Question

我尝试为以下代码编写junit测试，但无法在测试用例中抛出异常。实现如下:

public static HttpClientBuilder createTrustAllHttpClientBuilder() {
    try {
        SSLContext sslContext = SSLContextBuilder
                    .create()
                    .loadTrustMaterial(null, (certificate, authType) -> true) <= How to throw exception for this line
                    .build();
    }
    catch (KeyManagementException | NoSuchAlgorithmException | KeyStoreException e) {
        throw new IllegalStateException(e);
    }
}

以下是我的junit测试:

@RunWith(PowerMockRunner.class)
@PrepareForTest({SSLContextBuilder.class})
public class testClass {

     public void testCase() {
           SSLContextBuilder sslContextBuilder = mock(SSLContextBuilder.class, RETURNS_DEEP_STUBS);
           PowerMockito.mockStatic(SSLContextBuilder.class);
           PowerMockito.when(SSLContextBuilder.create()).thenReturn(sslContextBuilder);
           PowerMockito.when(sslContextBuilder.loadTrustMaterial(null, (certificate, authType) -> true)).thenThrow(new NoSuchAlgorithmException());
     }
}

如果您以前遇到过以下问题，我将不胜感激任何形式的帮助或知识分享。谢谢!

Answer 1

因为您已经有一个模拟，所以您可以使用 thenThrow 而不是 thenReturn 让您的模拟抛出异常。

https://static.javadoc.io/org.mockito/mockito-core/2.2.9/org/mockito/stubbing/OngoingStubbing.html