PowerMockito 的声纳覆盖报告

Question

I'm using PowerMockito and @PrepareForTest annotation for my test class. When I do this, Sonar says none of the branches have been covered. However, my other test classes that don't use PowerMockito works well. here is my pom looks like

<dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-api-mockito</artifactId>
            <version>1.6.2</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-module-junit4</artifactId>
            <version>1.6.2 </version>
            <scope>test</scope><plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>sonar-maven-plugin</artifactId>
                <version>3.2</version>
            </plugin>
            <plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>0.7.6.201602180812</version>
                <executions>
                    <execution>
                        <id>default-prepare-agent</id>
                        <goals>
                            <goal>prepare-agent</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>default-report</id>
                        <!-- <phase>prepare-package</phase> -->
                        <phase>test</phase>
                        <goals>
                            <goal>report</goal>
                        </goals>
                    </execution>
        </dependency>

Do I need to add anything in this pom ? Any help is Appreciated, Thanks in Advance

Answer 1

yes right powermock doesn't work with sonar in the first step, the cause of the problem is the combination of powermock and jacoco, there is already an issue related to this problem ( https://github.com/powermock/powermock/issues/727 ), see here for further informations:

https://github.com/powermock/powermock/wiki/Code-coverage-with-JaCoCo

in the meantime you can try a workaround, as described here:

https://www.geekality.net/2013/09/12/maven-package-runtime-dependencies-in-lib-folder-inside-packaged-jar/

Answer 2

• PowerMock doesn't work with sonar in the first step, the cause of the problem is the combination of powermock and jacoco
• We will not face this issue locally, but if we use sonar for test coverage calculations, the error is as follows

Could not initialize plugin: interface org.mockito.plugins.MockMaker (alternate: null) 

• In PowerMock 2.0.9 version, a workaround for this problem is provided they have added an annotation @PrepareOnlyThisForTest , this provides the ability for the isolation of a particular Test class.
• Apart from that, we need to add delegate the Runner to SpringRunner using @PowerMockRunnerDelegate(SpringRunner.class)

Add Power Mock Dependencies in pom.xml

        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-module-junit4</artifactId>
            <version>2.0.2</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-api-mockito2</artifactId>
            <version>2.0.9</version>
            <scope>test</scope>
        </dependency>

Use the PowerMock Junit Runner for test Class and declare the test class that we're mocking and delegate SpringRunner

    @RunWith(PowerMockRunner.class)
    @PrepareOnlyThisForTest(ServiceApplication.class)
    @PowerMockRunnerDelegate(SpringRunner.class)
    public class ExampleControllerTest {
        PowerMockito.mockStatic(ServiceApplication.class);
        Mockito.when(ServiceApplication.getStatic()).thenReturn("");

Answer 3

I've found that if you have only one class in the @PrepareForTest annotation eg @PrepareForTest(ClassA.class) then jacoco coverage works. It's only when there is more than one class eg @PrepareForTest({ClassA.class, ClassB.class}) that jacoco coverage is reported as 0%

Answer 4

You just need to add the delegate the Runner to SpringRunner;

@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(SpringRunner.class)