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POGetting a runtime Exception with parameterized Junit test
 

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  1. POGetting a runtime Exception with parameterized Junit test
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    <pre><code>@RunWith(value=Parameterized.class) public class TestHashMapParams { HashMap dataToTest; String cont; public void TestHashMapParams(HashMap dataToTest) { this.dataToTest=cont; } @Test public void hashTest() { System.out.println(dataToTest.get("Key")); } @Parameters public static Collection giveMe() { ArrayList&lt;HashMap[]&gt; ab=new ArrayList&lt;HashMap[]&gt;(); HashMap[] bc1=new HashMap[1]; HashMap[] bc2=new HashMap[1]; HashMap a1=new HashMap&lt;&gt;(); HashMap a2=new HashMap&lt;&gt;(); //HashMap arr[] = {new HashMap(), new HashMap()}; ArrayList&lt;HashMap&gt; itrtor1=new ArrayList&lt;HashMap&gt;(); ArrayList&lt;HashMap&gt; itrtor2=new ArrayList&lt;HashMap&gt;(); a1.put("Key", "val1"); a2.put("Key","val2"); itrtor1.add(a1); itrtor2.add(a2); bc1=itrtor1.toArray(new HashMap[itrtor1.size()]); bc2=itrtor2.toArray(new HashMap[itrtor2.size()]); ab.add(bc1); ab.add(bc2); return ab; } } java.lang.IllegalArgumentException: wrong number of arguments at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) </code></pre> <p>The above parameterized test meant to run two times giving a Runtime exception!! Though it runs two times but the above exception appears</p> <p>What might be going wrong here??</p> <p>Full stack trace</p> <pre><code>java.lang.IllegalArgumentException: wrong number of arguments at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at org.junit.runners.Parameterized$TestClassRunnerForParameters.createTestUsingConstructorInjection(Parameterized.java:186) at org.junit.runners.Parameterized$TestClassRunnerForParameters.createTest(Parameterized.java:181) at org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:244) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:241) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.junit.runners.Suite.runChild(Suite.java:127) at org.junit.runners.Suite.runChild(Suite.java:26) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) </code></pre> <p>/<strong><em>*</em>**<em>*</em>***</strong><em>ignore below</em><strong><em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>**<em>*</em>***</strong>/ adding more details adding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more detailsadding more details</p>
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USAnirudh
    1. USAnirudh
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    2. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COPlease show the *full* stack trace.
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      1. POGetting a runtime Exception with parameterized Junit test
      1. USJon Skeet
    2. COThnx! edited to show the full stack trace
      singulars
      1. POGetting a runtime Exception with parameterized Junit test
      1. USAnirudh
 

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