单身 class 没有被嘲笑

Question

我有一个单例 class SvnPlugin，我需要将其 getInstance() 模拟为 return 一个模拟对象。但它不会被嘲笑。我正在使用 Powermock 和 Easymock。

以下是我的测试代码

@Test
@PrepareForTest({SVNPlugin.class})
public void createGlobalUSerTest() throws Exception{
    PowerMock.mockStatic(SVNPlugin.class);
    SVNPlugin svnPlugin=PowerMock.createMock(SVNPlugin.class);
    PowerMock.expectNew(SVNPlugin.class).andReturn(svnPlugin);      

    EasyMock.expect(SVNPlugin.getInstance()).andReturn(svnPlugin).anyTimes();
    EasyMock.expect(svnPlugin.getSynProject("", "", "", "")).andReturn(true);
    PowerMock.replay(SVNPlugin.class,svnPlugin);
    Future<RpcResult<CreateGlobalUserOutput>> 
       result=impl.createGlobalUser(getGLobalUser());
    PowerMock.verify(svnPlugin,SVNPlugin.class);
    Assert.assertNotNull(result);       
}

需要mock的示例代码是

SVNPlugin svnplugin = SVNPlugin.getInstance();
checkOutFlg = svnplugin.getSynProject(checkOutLocationAtLocal, svnPath , userName, passWord);

我无法理解我做错了什么。

Answer 1

快速回答是您需要 Powermock 转轮。

那么，实际上你不需要模拟 new 因为模拟 getInstance 就足够了。

我假设 SVNPlugin 是最终的，这证明了使用 Powermock 创建的模拟是正确的。所以我尝试了这个实现。

public final class SVNPlugin {
  public static SVNPlugin getInstance() {
    return new SVNPlugin();
  }

  private SVNPlugin() {}

  public boolean getSynProject(String s, String s1, String s2, String s3) {
    return false;
  }
}

下面的测试运行良好。

@RunWith(PowerMockRunner.class)
public class SVNPluginTest {

  @Test
  @PrepareForTest(SVNPlugin.class)
  public void createGlobalUSerTest() throws Exception{
    PowerMock.mockStatic(SVNPlugin.class);
    SVNPlugin svnPlugin = PowerMock.createMock(SVNPlugin.class);

    EasyMock.expect(SVNPlugin.getInstance()).andStubReturn(svnPlugin);
    EasyMock.expect(svnPlugin.getSynProject("", "", "", "")).andReturn(true);

    PowerMock.replay(SVNPlugin.class,svnPlugin);

    SVNPlugin svnplugin = SVNPlugin.getInstance();
    boolean checkOutFlg = svnplugin.getSynProject("", "", "", "");
    assertTrue(checkOutFlg);

    PowerMock.verify(svnPlugin,SVNPlugin.class);
  }
}

单身 class 没有被嘲笑

Singleton class not getting mocked

java

unit-testing

mocking

powermock

easymock