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PORunning JUnit 4 Tests Parallel With FailSafe & SureFire plugins
 

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    <p>We have a profile created in maven to run our <strong>Selenium junit4 type tests</strong> and below is the snippet of it without the executions tag.</p> <pre><code>&lt;profile&gt; &lt;id&gt;selenium-tests&lt;/id&gt; &lt;build&gt; &lt;plugins&gt; &lt;plugin&gt; &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; &lt;artifactId&gt;maven-failsafe-plugin&lt;/artifactId&gt; &lt;version&gt;2.11&lt;/version&gt; &lt;dependencies&gt; &lt;!-- Force using the latest JUnit 47 provider --&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.maven.surefire&lt;/groupId&gt; &lt;artifactId&gt;surefire-junit47&lt;/artifactId&gt; &lt;version&gt;2.11&lt;/version&gt; &lt;/dependency&gt; &lt;/dependencies&gt; &lt;configuration&gt; &lt;parallel&gt;classes&lt;/parallel&gt; &lt;threadCount&gt;5&lt;/threadCount&gt; &lt;forkMode&gt;pertest&lt;/forkMode&gt; &lt;useManifestOnlyJar&gt;false&lt;/useManifestOnlyJar&gt; &lt;redirectTestOutputToFile&gt;true&lt;/redirectTestOutputToFile&gt; &lt;skip&gt;false&lt;/skip&gt; &lt;includes&gt; &lt;include&gt;**/regtests/*.java&lt;/include&gt; &lt;/includes&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;/plugins&gt; &lt;/build&gt; &lt;/profile&gt; </code></pre> <p>And my TestClass looks like this.</p> <pre><code>@RunWith(HTMLSourceDumperJUnit4Runner.class) //Our own Runner public class MyTestClass extends Assert { private int x = 1; private int y = 1; @Test public void testAddition() { int z = x + y; assertEquals(2, z); } } </code></pre> <p>When I run this testclass through the failsafe plugin 2.11 with parallel configuration it fails with the following error.</p> <pre> java.lang.Exception: No runnable methods at org.junit.runners.BlockJUnit4ClassRunner.validateInstanceMethods(BlockJUnit4ClassRunner.java:171) at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:115) at org.junit.runners.ParentRunner.validate(ParentRunner.java:269) at org.junit.runners.ParentRunner.(ParentRunner.java:66) at org.junit.runners.BlockJUnit4ClassRunner.(BlockJUnit4ClassRunner.java:59) at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:13) at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57) at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29) at org.junit.runner.Computer.getRunner(Computer.java:38) at org.apache.maven.surefire.junitcore.ConfigurableParallelComputer.getRunner(ConfigurableParallelComputer.java:142) at org.junit.runner.Computer$1.runnerForClass(Computer.java:29) at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57) at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:93) at org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:84) at org.junit.runners.Suite.(Suite.java:79) at org.junit.runner.Computer.getSuite(Computer.java:26) at org.apache.maven.surefire.junitcore.ConfigurableParallelComputer.getSuite(ConfigurableParallelComputer.java:134) at org.junit.runner.Request.classes(Request.java:69) at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:53) at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:140) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:188) at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:166) at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:86) at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:101) at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:74) </pre> <p>Is there anything I'm missing here. If I'm lagging any information for this post, please post back.</p>
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    1. COYou're mixing versions too; the surefire-junit47 dependency should follow the failsafe version; 2.11 instead of 2.8
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      1. USkrosenvold
    2. COThanks.. I tried this and still showing the same error. I have updated question with the latest tries..
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      1. USraksja
    3. COSimply upgrading to surefire 2.11 from 2.10 breaks every unit test I have with errors like yours above -- with or without trying the new parallel stuff. All the tests are valid JUnit 4 type tests that work fine with 2.10 and prior. I've spent a couple hours trying to figure it out, time to wait until surefire 2.12. What I am doing similar is the forkMode, useManifestOnlyJar, and redirectOutputToFile settings. Perhaps try different settings for some or all of those?
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      1. USScott Carey
 

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