java - 如何检查java中的测试覆盖率？

Question

我想检查测试覆盖率，通过运行 Test in'lesson_3 来运行覆盖率。我收到错误:

java.lang.reflect.InvocationTargetException
    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 sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:386)
    at sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:401)
Caused by: java.lang.reflect.InvocationTargetException
    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 com.intellij.rt.coverage.main.CoveragePremain.premain(CoveragePremain.java:66)
    ... 6 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
    at com.intellij.rt.coverage.instrumentation.Instrumentator.premain(Instrumentator.java:64)
    ... 11 more
FATAL ERROR in native method: processing of -javaagent failed

Process finished with exit code 1
Exception in thread "main"  

Answer 1

根据您的堆栈跟踪，您受到 IDEA-177038 的影响它被标记为 IDEABKL-5941 的重复项。

已知的解决方法是将以下内容添加到命令行参数:

-Djava.io.tmpdir=C:\Temp