我想在单元测试失败时在问题跟踪软件中创建错误报告。这意味着当测试失败时,我需要将通常打印到IDE控制台中的内容保存为字符串。到目前为止,我有以下代码:
@Rule
public ErrorCollector collector = new ErrorCollector();
...
@Test
public void testFailedUnitTest() {
collector.checkThat(3, equalTo(5));
}
它向控制台输出以下内容。我想把它放入一个字符串,而不是/除了输出到我的IDE的控制台:
java.lang.AssertionError:
Expected: <5>
but: was <3>
at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
at org.junit.Assert.assertThat(Assert.java:865)
...
I have try:
用try/catch块包围它并使用e.g get…但它没有捕获java.lang.AssertionError。catch块中的代码甚至没有被执行。我想那是因为我的收集器正在等待抛出异常testFailedUnitTest() 完成抛出错误,以便它可以
用try/catch块包围一个正常的、非收集器的JUnit测试。
在所有测试完成后,在我的tearDown()中获取输出完成。但是没有像public String[]这样的方法getJUnitFailures()在ErrorCollector JavaDoc中
在我的pom.xml中涉及编辑某些内容的各种方法,例如将redirectTestOutputToFile元素设置为true,但它们具有与2)相同的问题,不幸的是一些遗留代码不使用Maven。但是,maven特有的方法是可以接受的。
这是否可行?如果可行,这是最好的方法吗?
提前谢谢你。:)
看起来TestWatcher可以做你想做的事。
<标题> 例子
import java.io.PrintWriter;
import java.io.StringWriter;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestRule;
import org.junit.rules.TestWatcher;
import org.junit.runner.Description;
public class FailedTestCapturer {
@SuppressWarnings("null")
private static int throwNPE() {
String x = null;
return x.length();
}
private String exception;
@Rule
public final TestRule watchman = new TestWatcher() {
@Override
protected void failed(Throwable e, Description description) {
StringWriter writer = new StringWriter();
e.printStackTrace(new PrintWriter(writer));
exception = writer.toString();
System.out.println("Captured exception! --> " + exception);
}
};
@Test
public void failingTest() {
throwNPE();
}
}
<标题> 输出Captured exception! --> java.lang.NullPointerException
at FailedTestCapturer.throwNPE(FailedTestCapturer.java:15)
at FailedTestCapturer.failingTest(FailedTestCapturer.java:32)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
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)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
标题>标题>