java - 测试用例未涵盖在 cobertura 中

Question

public class MyUtil {
    public static Properties loadProperties() throws Exception {
        Properties prop = new Properties();
        InputStream inputStream = MyUtil.class.getClassLoader().getResourceAsStream(PROPERTY_FILENAME);
        if (inputStream != null) {
            prop.load(inputStream);
        }
        return prop;
    }
}

我已经为上述方法编写了测试用例，当我在 Eclipse 中作为测试用例运行时，它通过了，当我调试 loadProperties() 时，没有被调用，并且 cobertura 报告 显示为未覆盖的代码。

@RunWith(PowerMockRunner.class)
@PrepareForTest({ MyUtil.class, Properties.class })

@Test
public void testLoadProperties() throws Exception{
    String fileName = "application.properties";
    Properties mockProps = PowerMockito.mock(Properties.class);
    PowerMockito.mockStatic(Properties.class);
    PowerMockito.whenNew(Properties.class).withNoArguments().thenReturn(mockProps);
    InputStream mockInputStream = Mockito.mock(InputStream.class);
    PowerMockito.mockStatic(MyUtil.class);
    ClassLoader mockClassLoader = Mockito.mock(ClassLoader.class);
    PowerMockito.when(MyUtil.class.getClassLoader()).thenReturn(mockClassLoader);
    PowerMockito.when(mockClassLoader.getResourceAsStream(fileName)).thenReturn(mockInputStream);
    PowerMockito.doNothing().when(mockProps).load((InputStream)Mockito.any());
    MyUtil.loadProperties();
    //assertNotNull("Not Null", MyUtil.loadProperties()); //assert failing
}

我应该更改什么才能确保我的代码确实覆盖了代码覆盖率？

Answer 1

PowerMock 破坏代码覆盖工具是一个众所周知的老问题:
https://github.com/cobertura/cobertura/issues/94

目前，只有一种方法可以获取代码覆盖率 JaCoCo 离线检测 https://github.com/powermock/powermock/wiki/Code-coverage-with-JaCoCo