Multiple Hamcrest versions?
I am using the following:
- junit4.7.jar
- hamcrest-all-1.2.jar
When the test failed I got the following exception:
1: java.lang.NoSuchMethodError: org.hamcrest.Matcher.describeMismatch(Ljava/lang/Object;Lorg/hamcrest/DescriptionV
2: at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
3: at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:8)
4: at ms.EnumExample.saveEnum(EnumExample.java:19)
5: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
6: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
7: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
8: at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
9: at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
10: at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
11: at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
12: at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
13: at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
14: at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
15: at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
16: at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
17: at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
18: at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
19: at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
20: at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
21: at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
22: at com.intellij.rt.junit4.Junit4TestMethodAdapter.run(Junit4TestMethodAdapter.java:62)
23: at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:40)
24: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
25: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
26: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
27: at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
I guess hamcrest ships with JUnit.
One solution is to download junit-dep-4.7.jar and make it part of the project. Then everything works fine!
Another solution that I haven’t tried is to remove hamcrest jar and just rely on junit 4.7, unless of course you need something specific from the version of hamcrest.
I find that re-ordering the classpath to make sure that hamcrest is before *any* junit (in eclipse this means before other projects that also have tests). This usually clears up any problems.
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