java-PowerMock Emma-私有静态方法和其他方法的代码覆盖率也显示0％

这个问题已经在这里有了答案：            >            PowerMock ECLEmma coverage issue                                    7个
我从：Mock private method using PowerMockito获取了PowerMock的引用,并在此处应用了相同的逻辑.另外,我在eclipse / STS中安装了EMMA(开源工具),但是当我运行代码时,看到的代码覆盖率为零.为什么呢？

public class MyClient {

    public void publicApi() {
        System.out.println("In publicApi");
        int result = 0;
        try {
            result = privateApi("hello", 1);
        } catch (Exception e) {
            //Assert.fail();
        }
        System.out.println("result : "+result);
        if (result == 20) {
            throw new RuntimeException("boom");
        }
    }

    private static int privateApi(String whatever, int num) throws Exception {
        System.out.println("In privateAPI");
        thirdPartyCall();
        int resp = 10;
        return resp;
    }

    private static void thirdPartyCall() throws Exception{
        System.out.println("In thirdPartyCall");
        //Actual WS call which may be down while running the test cases
    }
}

MyClientTest.java

@RunWith(PowerMockRunner.class)
@PrepareForTest(MyClient.class)
public class MyClientTest {

    @Test
    public void testPublicAPI() throws Exception {
        PowerMockito.mockStatic(MyClient.class);

        //PowerMockito.doReturn(10).when(MyClient.class, "privateApi", anyString(), anyInt());
        PowerMockito.when(MyClient.class,"privateApi", anyString(), anyInt()).thenReturn(anyInt());
    }
}

实际代码覆盖率：

的pom.xml

<dependencies>
        <!-- Power Mock -->
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-api-mockito</artifactId>
            <version>1.7.4</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-module-junit4</artifactId>
            <version>1.7.4</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-module-junit4-rule-agent</artifactId>
            <version>1.7.4</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-core</artifactId>
            <version>1.7.4</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

解决方法:

如果要构建间谍程序或模拟程序,则不会调用实际的测试代码.间谍的目的是为了能够验证()它们,以便通过调用正确的回调或方法来检查代码是否正常运行.在模拟的情况下,重点是将代码引导至特定的控制流路径,并验证()与模拟的预期交互作用.

由于您的测试用例在一个间谍上调用了测试方法,因此,难怪您的代码覆盖率恰好是0％.如果要验证与模拟方法的交互,您可能会发现没有任何反应.

相反,您要做的是设置模拟程序,但以“正常方式”调用测试中的实际代码.想法是准备执行环境,然后“正常”调用经过测试的方法,最后观察实际发生的情况.最后一点包括对产生的输出的正常声明,对预期交互的验证(既发生了交互,又涉及预期的参数/值).

更改测试代码：

MyClient classUnderTest = PowerMockito.spy(new MyClient());

至：

MyClient classUnderTest = new MyClient();

并观看代码覆盖范围.

标签：powermockito,java,powermock
来源： https://codeday.me/bug/20191009/1878219.html