java - junit TestWatcher 失败和完成的方法触发时间

Question

我正在使用 webdriver 编写一些功能测试并使用 JUnit 执行它们。我正在尝试使用 TestWatcher 类，因此每次发生事件时都可以执行特定操作。我正在重写完成的和失败的方法，但似乎这些方法实际上是同时触发的，所以在失败的方法可以完成它的事情之前，驱动程序已经被完成方法处理掉了。

TestWatcher 如下:

public class TestRules extends TestWatcher {

private static WebDriver driver;
private static final Logger Log = LogManager.getLogger(TestRules.class);

public TestRules() {
    if (driver == null)
        try {
            driver = TestHelpers.getWebDriver();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
}

@Override
protected void starting(Description description){
    Log.info(String.format("Started test: %s::%s", description.getClassName(), description.getMethodName()));
    try {
        new LoginTest().testDoLogin();
    } catch (Exception e) {
        Log.error(e);
    }
}

@Override
protected void failed(Throwable e, Description description) {
    File scrFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);

    String path = String.format("C:\\localdev\\screenshot\\%d__%s_%s.png",
            Calendar.getInstance().getTimeInMillis(), description.getClassName(), description.getMethodName());
    try {
        FileUtils.copyFile(scrFile, new File(path));
    } catch (IOException ioe) {
        Log.error(ioe);
    }
    Log.error(String.format("Error: %s\nScreenshot: %s", e.getMessage(), path));
}

@Override
protected void finished(Description description) {
    Log.info(String.format("Finished test: %s::%s", description.getClassName(), description.getMethodName()));
    try {
        // This actually calling driver.quit() <- (driver == WebDriver)
        TestHelpers.close();
    } catch (Exception e) {
        Log.error(e);
    }
}

}

测试可能是这样的:

public class testSomething {
private static final Logger Log = LogManager.getLogger(testSomething.class);

@Rule
public TestRules testRules = new TestRules();

@Test
public void filterTableByNameWildcard() throws Exception {
    Log.info("Starting the test filterTable");

    MainView mainView = getMainView();
    String searchString = "A*";
    mainView.setFilterParametersAndDoFilter(searchString, "", true, true);
    mainView.validateWildCardSearchReturnsCorrectData(searchString);
    // Random failing point for testing
    Assert.assertTrue(false);

当我运行测试时，出现以下错误:

java.lang.AssertionError: 
Expected :true
Actual   :false
 <Click to see difference>
    at org.junit.Assert.fail(Assert.java:88)
    at org.junit.Assert.failNotEquals(Assert.java:789)
    at org.junit.Assert.assertEquals(Assert.java:118)
    at org.junit.Assert.assertEquals(Assert.java:144)
    at xxx.Tests.xxx.testSomething.filterSomething(TestSomething.java:34)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
    at org.junit.rules.RunRules.evaluate(RunRules.java:20)
.... skipped


org.openqa.selenium.remote.SessionNotFoundException: The FirefoxDriver cannot be used after quit() was called.
Build info: version: '2.33.0', revision: '4e90c97', time: '2013-05-22 15:33:32'
System info: os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_21'
Driver info: driver.version: FirefoxDriver
    at org.openqa.selenium.firefox.FirefoxDriver$LazyCommandExecutor.execute(FirefoxDriver.java:352)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:527)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:569)
    at org.openqa.selenium.firefox.FirefoxDriver.getScreenshotAs(FirefoxDriver.java:316)
    at xxx.TestHelpers.TestRules.failed(TestRules.java:47)
    at org.junit.rules.TestWatcher.failedQuietly(TestWatcher.java:84)
    at org.junit.rules.TestWatcher.access$300(TestWatcher.java:46)
    at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:62)
    at org.junit.rules.RunRules.evaluate(RunRules.java:20)

有什么想法可以通过吗？

编辑:来自文档:

protected void finished(Description描述)当测试方法完成时调用(无论通过还是失败)

protected void failed(Throwable e, Description 描述)测试失败时调用

这是有道理的，首先调用“失败”，然后调用“完成”，但似乎恰恰相反。

Answer 1

您的问题是不是在每次执行时都重新创建的共享资源。我创建了一个小例子来展示这一点。看看my comment to your comment .