如何在 junit 5 扩展中获取重复计数

Question

我尝试编写自己的 JUnit 5 扩展，提供一些关于测试持续时间的简单信息。我也想打印出重复信息，但如何在扩展中访问这些信息？有什么简单的方法可以代替反射或将数字写入并解析为显示名称吗？

简单示例：

@ExtendWith(TimingExtension.class)
public class MyTestClass {
    @RepeatedTest(value = 5, name = "{currentRepetition}/{totalRepetitions}")
    public void myTest(TestInfo testInfo, RepetitionInfo repInfo) {
        // do some work here...
    }
}


public class TimingExtension implements AfterTestExecutionCallback {
    @Override
    public void afterTestExecution(ExtensionContext context) throws Exception {
        if(context.getRequiredTestMethod().getDeclaredAnnotation(RepeatedTest.class) != null) {
            System.out.println("This was test X of Y"); // how to get currentRepetition and totalRepetitions here?
        }
    }
}

Answer 1

遗憾的是，扩展中不支持参数注入。这只是一种方式。因此，为了在您的 TimingExtension 中获得 RepetitionInfo，您必须设置它。

首先你需要使用@RegisterExtension例如

public class MyTestClass {

    @RegisterExtension
    TimingExtension timingExt = new TimingExtension();

    @RepeatedTest(value = 5, name = "{currentRepetition}/{totalRepetitions}")
    public void myTest(TestInfo testInfo, RepetitionInfo repInfo) {
        timingExt.setRepetitionInfo(repInfo);
        // do some work here...
    }
}

public class TimingExtension implements AfterTestExecutionCallback {

    private RepetitionInfo repInfo;

    @Override
    public void afterTestExecution(ExtensionContext context) throws Exception {
        if (context.getRequiredTestMethod().getDeclaredAnnotation(RepeatedTest.class) != null && repInfo != null) {
            System.out.println(String.format("This was test %d of %d", repInfo.getCurrentRepetition(), repInfo.getTotalRepetitions()))
            repInfo = null;
        }
    }

    public void setRepetitionInfo(RepetitionInfo repInfo) {
        this.repInfo = repInfo;

    }
}

如何在 junit 5 扩展中获取重复计数

How to get repetition count in a junit 5 extension

java

junit5

junit5-extension-model