junit与surefire平行无法正常工作

Question

问题：当我在命令行中运行“mvn test”时，JUnit没有并行运行我的测试。下面是我进入pom的surefire插件以方便并行。我正在使用Junit 4.12

                <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.19.1</version>
                <executions>
                    <execution>
                        <phase>test</phase>
                        <goals>
                            <goal>test</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <skip>false</skip>
                    <parallel>methods</parallel>
                    <threadCount>4</threadCount>
                </configuration>
            </plugin>

基本上我有一系列愚蠢的测试只是为了确保线程正常工作

@RunWith(Parameterized.class)
public class JunitTest {


Container container = new Container();

@Parameterized.Parameters
public static List<Object[]> data() {
    return Arrays.asList(new Object[10][0]);
}

@Test
public void test1(){
    Assert.assertTrue(container.something().childVal.equals("initial"));
    System.out.println("running test 1 on thread " + Thread.currentThread().getId());
    container.something().childVal = "dirty";

}
// basically several copies of this test after this

当测试运行时，我希望我会看到输出不同的线程ID。