mvn -X帮助我揭示了以下内容：
...[INFO] [surefire:test {execution: default-test}][DEBUG] dummy:dummy:jar:1.0 (selected for null)[DEBUG] org.apache.maven.surefire:surefire-booter:jar:2.4.3:runtime (selected for runtime)[DEBUG] org.apache.maven.surefire:surefire-api:jar:2.4.3:runtime (selected for runtime)[DEBUG] Adding to surefire booter test classpath: /home/mindas/.m2/repository/org/apache/maven/surefire/surefire-booter/2.4.3/surefire-booter-2.4.3.jar[DEBUG] Adding to surefire booter test classpath: /home/mindas/.m2/repository/org/apache/maven/surefire/surefire-api/2.4.3/surefire-api-2.4.3.jar[DEBUG] dummy:dummy:jar:1.0 (selected for null)[DEBUG] org.testng:testng:jar:jdk15:5.8:test (selected for test)[DEBUG] junit:junit:jar:3.8.1:test (selected for test)[DEBUG] Adding to surefire booter test classpath: /home/mindas/.m2/repository/org/testng/testng/5.8/testng-5.8-jdk15.jar[DEBUG] Adding to surefire booter test classpath: /home/mindas/.m2/repository/junit/junit/3.8.1/junit-3.8.1.jar[DEBUG] dummy:dummy:jar:1.0 (selected for null)[DEBUG] Retrieving parent-POM: org.apache.maven.surefire:surefire-providers:pom:2.4.3 for project: null:surefire-testng:jar:null from the repository.[DEBUG] Adding managed dependencies for unknown:surefire-testng[DEBUG] org.apache.maven.surefire:surefire-api:jar:2.4.3[DEBUG] org.apache.maven.surefire:surefire-booter:jar:2.4.3[DEBUG] org.prehaus.plexus:plexus-utils:jar:1.5.1[DEBUG] org.apache.maven.surefire:surefire-testng:jar:2.4.3:test (selected for test)[DEBUG] org.apache.maven:maven-artifact:jar:2.0:test (selected for test)[DEBUG] org.prehaus.plexus:plexus-utils:jar:1.0.4:test (selected for test)[DEBUG] junit:junit:jar:3.8.1:test (selected for test)[DEBUG] org.testng:testng:jar:jdk15:5.7:test (selected for test)[DEBUG] org.apache.maven.surefire:surefire-api:jar:2.4.3:test (selected for test)...[DEBUG] Test Classpath :...[DEBUG] /home/mindas/.m2/repository/junit/junit/4.7/junit-4.7.jar因此，似乎问题出在
testng需要JUnit v3.8.1的jar中。即使
Test Classpath设置为依赖JUnit 4，也为时已晚。
testng依赖项位于我的POM中：
<dependency> <groupId>org.testng</groupId> <artifactId>testng</artifactId> <version>5.8</version> <scope>test</scope> <classifier>jdk15</classifier></dependency>
在我将其注释掉之后，立即开始执行测试。
得到教训：
mvn dependency:tree
并不总是足够的，mvn -X
是朋友。- surefire不是为开发人员准备的（我在查看JIRA项目报告时已经意识到这一点）。尤其是因为使用Maven时没有其他选择。
谢谢大家的帮助。不幸的是，没有办法在Pascal和Kaleb之间分配答案，但是Kaleb的使用建议
mvn-X帮助我走上了正确的道路，所以正确的答案就归于他。
