IDEA运行单元测试报错：java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing

原因：缺少hamcrest的包

解决：将hamcrest的包加入工程

 

 

 JUnit包下载  https://repo1.maven.org/maven2/junit/junit/4.12/junit-4.12.jar

hamcrest包下载  https://repo1.maven.org/maven2/org/hamcrest/hamcrest-core/1.1/hamcrest-core-1.1.jar