java - JUnit 4.8.1/Maven 简单测试不起作用

Question

虽然我尝试了所有发现的建议，但我仍然无法运行最简单的 JUnit 测试。错误消息基本上重复说“junit.framework.AssertionFailedError:在 project002.trivial.TestClassTest 中找不到测试”。

您可以检查a snapshot of my IDE或 download the zipped project .

这是我的 pom.xml:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>project002</groupId>
    <artifactId>project002</artifactId>
    <version>1.0</version>
    <packaging>jar</packaging>
    <name>project002</name>
    <url>http://maven.apache.org</url>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    <repositories>
        <repository>
            <id>EclipseLink Repo</id>
            <url>http://www.eclipse.org/downloads/download.php?r=1&amp;nf=1&amp;file=/rt/eclipselink/maven.repo</url>
        </repository>
    </repositories>
    <dependencies>
         <dependency>
              <groupId>junit</groupId>
              <artifactId>junit</artifactId>
              <version>4.7</version>
              <scope>test</scope>
          </dependency>  
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.1</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.5</version>
                 <configuration>
                    <junitArtifactName>org.junit:com.springsource.org.junit</junitArtifactName>
                    <includes>
                        <include>**/*Test.java</include>
                    </includes>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

这是错误信息:

-------------------------------------------------------------------------------
Test set: project002.trivial.TestClassTest
-------------------------------------------------------------------------------
Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.078 sec <<< FAILURE!
warning(junit.framework.TestSuite$1)  Time elapsed: 0 sec  <<< FAILURE!
junit.framework.AssertionFailedError: No tests found in project002.trivial.TestClassTest
    at junit.framework.Assert.fail(Assert.java:47)
    at junit.framework.TestSuite$1.runTest(TestSuite.java:97)
    at junit.framework.TestCase.runBare(TestCase.java:134)
    at junit.framework.TestResult$1.protect(TestResult.java:110)
    at junit.framework.TestResult.runProtected(TestResult.java:128)
    at junit.framework.TestResult.run(TestResult.java:113)
    at junit.framework.TestCase.run(TestCase.java:124)
    at junit.framework.TestSuite.runTest(TestSuite.java:232)
    at junit.framework.TestSuite.run(TestSuite.java:227)
    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.apache.maven.surefire.junit.JUnitTestSet.execute(JUnitTestSet.java:213)
    at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:115)
    at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:102)
    at org.apache.maven.surefire.Surefire.run(Surefire.java:180)
    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.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:350)
    at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1021)

Answer 1

您的测试用例有问题。当您扩展 Testcase 时，它​​将始终使用 Junit 3.x 执行，因此您需要在您的测试方法前加上“test”前缀。

如果您想使用 junit 4.x，请删除“extends Testcase”，然后使用@Test 注释您的测试方法。

这个使用 Junit 3.x 运行，它不会工作，因为你的测试方法没有前缀“test”:-

public class TestClassTest extends TestCase {

    @Test
    public void isThisReallyTrue() {
        assertTrue(true);
    }
}

这个将在 Junit 4.x 中运行:-

public class TestClassTest {

    @Test
    public void isThisReallyTrue() {
        assertTrue(true);
    }
}