Re: [tycho-user] Getting a combination of JUnit4, Hamcrest, Mockito to w

[Stephan Druskat <stephan.druskat@xxxxxxxxx>]

Thanks,

I've tried the Orbit bundles first of course, but they let the test fail
when running in the IDE:

- java.lang.SecurityException: class "org.hamcrest.Matchers"'s signer
information does not match signer information of other classes in the
same package

Thanks!
Stephan

Am 20.07.2017 um 16:19 schrieb Matthew Piggott:
> Not really answering your question but Orbit has both JUnit and Hamcrest
> - http://download.eclipse.org/tools/orbit/downloads/drops/R20170516192513/
> 
> Mockito is there too but is an older version.
> 
> On 20 July 2017 at 10:12, Stephan Druskat <stephan.druskat@xxxxxxxxx
> <mailto:stephan.druskat@xxxxxxxxx>> wrote:
> 
>     Dear List,
> 
>     I've managed to get JUnit 4.12 + Hamcrest 1.3 + Mockito 2.8.47 to work
>     in Eclipse so that when I add them as dependencies, the tests will run.
> 
>     (The way I've done this is using the p2-maven-plugin
>     (https://github.com/reficio/p2-maven-plugin/
>     <https://github.com/reficio/p2-maven-plugin/>) to bundle the following
>     artifacts from Maven Central into plugins/a feature and provie them
>     via P2:
> 
>     https://github.com/reficio/p2-maven-plugin/
>     <https://github.com/reficio/p2-maven-plugin/>
>     - junit 4.12
>     - org.mockito.mockito-core 2.8.47
>     - org.hamcrest.all 1.3.0
>     )
> 
>     Adding the plugins to my test fragment as dependencies makes the tests
>     run in Eclipse.
> 
>     However, the Tycho build of the same fragment will fail with the
>     following messages:
> 
>     java.lang.LinkageError: loader constraint violation: loader (instance of
>     org/eclipse/osgi/internal/loader/EquinoxClassLoader) previously
>     initiated loading for a different type with name "org/hamcrest/Matcher"
>             at java.lang.ClassLoader.defineClass1(Native Method)
>             at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
>             at
>     org.eclipse.osgi.internal.loader.ModuleClassLoader.defineClass(ModuleClassLoader.java:273)
>             at
>     org.eclipse.osgi.internal.loader.classpath.ClasspathManager.defineClass(ClasspathManager.java:632)
>             at
>     org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findClassImpl(ClasspathManager.java:586)
>             at
>     org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClassImpl(ClasspathManager.java:538)
>             at
>     org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:525)
>             at
>     org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:325)
>             at
>     org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:345)
>             at
>     org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:423)
>             at
>     org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:372)
>             at
>     org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:364)
>             at
>     org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:161)
>             at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>             at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:12)
>             at org.junit.Assert.assertThat(Assert.java:956)
>             at org.junit.Assert.assertThat(Assert.java:923)
> 
>     So it seems that some other plugin is loading the package
>     "org.hamcrest.Matcher" before this fragment does. This is probably due
>     to the import/export/partial import/partial export chaos surrounding the
>     JUnit/Hamcrest/Mockito setup.
> 
>     Does anyone have an idea, or even better: a working example, of how to
>     get the three components work together both within the IDE (for quick
>     checks on whether tests run) and Tycho (for checks during the build?
> 
>     Many thanks indeed!
>     Best
>     Stephan
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> 
> 
> 
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