JUnit的失败回调/法 [英] JUnit on failure callback/method

问题描述

是否有可能触发每当一个测试用例或断言失败的方法，为了做一些事情，当一个测试用例失败（如截图，同时UI测试，写一个错误日志，等等...）。

Is there any possibility to trigger a method whenever a testcase or assertion fails, in order to do some things when a testcase fails (e.g. Screenshot while UI-Testing, writing an error log, and so on...).

也许有类似的注解，我还没有注意到。

Maybe there is something like an annotation, I did not yet notice.

在此先感谢！

推荐答案

您可以使用 TestWatcher 规则并实现自己的失败方法采取截图或任何你需要在测试失败的事情。稍微从官方文档变形例

You can use the TestWatcher rule and implement your own failed method to take a screenshot or whatever you need to do upon test failure. Slightly modified example from the official documentation:

public static class WatchmanTest {
    private static String watchedLog;

    @Rule
    public MethodRule watchman = new TestWatcher() {
        @Override
        protected void failed(Throwable e, Description description) {
            watchedLog += d + "\n";
            // take screenshot, etc.
        }
    };

    @Test
    public void fails() {
        fail();
    }
}

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