Question

当我使用JUnit测试某些Java函数时，无论成功或失败，它都会输出一些结果。但是有时它看起来像一堆小蚂蚁，让我感到头晕。

也许生成此输出的最初目的是为了进行更好的调试。但是，如果有成百上千的测试用例，则输出可能无法在控制台中完全显示。因此，是否有一种方法可以在测试失败时触发操作，仅将失败的内容写入文件或将其发送到邮箱？

例如：

Sntest.java

package com.jut;

public class Sntest {
    public String getString() {
        return "String";
    }
    public Object getNull() {
        return null;
    }
}

SntestTest.java

package com.jut;

import org.junit.Assert;
import org.junit.Test;

import com.jut.Sntest;

public class SntestTest {

    @Test
    public void t1() {
        Sntest sn = new Sntest();
        String msg = sn.getString();

        Assert.assertEquals("AString != String", "AString", msg);

    }

    @Test
    public void t2() {
        Sntest sn = new Sntest();
        Assert.assertNull("Not null", sn.getNull());
    }
}

在上面的示例中，测试方法t1将得到错误的结果并显示很多信息，如下所示：

Running com.jut.SntestTest
Tests run: 2, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.156 sec <<< FAILURE!
t1(com.jut.SntestTest)  Time elapsed: 0.025 sec  <<< FAILURE!
org.junit.ComparisonFailure: AString != String expected:<[A]String> but was:<[]String>
        at org.junit.Assert.assertEquals(Assert.java:125)
        at com.jut.SntestTest.t1(SntestTest.java:15)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
        at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
        at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
        at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
        at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
        at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
        at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
        at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)

但是我只想看到第一行到第四行，那么如何将输出转换为以下结果呢？

Running com.jut.SntestTest
    Tests run: 2, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.156 sec <<< FAILURE!
    t1(com.jut.SntestTest)  Time elapsed: 0.025 sec  <<< FAILURE!
    org.junit.ComparisonFailure: AString != String expected:<[A]String> but was:<[]String>

Answer 1

恐怕它无法更改为您想要的。它只是一个调用堆栈，可以帮助您查找问题

如何自定义显示JUnit测试结果的方式？

1 个答案: