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https://issues.apache.org/jira/browse/MRUNIT-215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14136290#comment-14136290
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Dave Beech commented on MRUNIT-215:
-----------------------------------
Sorry, I didn't read your comment properly. No, I don't think there is a way to
do this at the moment. There's no support for testing of multiple input splits
in one run (which would really be independent map tasks in the real world)
> setMapInputPath() doesn't serve any purpose?
> --------------------------------------------
>
> Key: MRUNIT-215
> URL: https://issues.apache.org/jira/browse/MRUNIT-215
> Project: MRUnit
> Issue Type: Bug
> Affects Versions: 1.0.0, 1.1.0
> Reporter: Ken Williams
>
> If I call {{MapDriver.setMapInputPath(...)}} in my test code, it seems to
> have no effect, and the specified path doesn't get added to the input for the
> mapper. Example:
> {code}
> import org.apache.hadoop.mrunit.mapreduce.MapDriver;
> ...
> MapDriver<LongWritable, Text, Text, Text> mapDriver =
> MapDriver.newMapDriver(new myMapper());
> mapDriver.setMapInputPath(new Path("my/data/path"));
> mapDriver.run();
> java.lang.IllegalStateException: No input was provided
> at
> org.apache.hadoop.mrunit.MapDriverBase.preRunChecks(MapDriverBase.java:286)
> at org.apache.hadoop.mrunit.mapreduce.MapDriver.run(MapDriver.java:142)
> at com.myPackage.testIncrementals(MyTest.java:77)
> 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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
> 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}
> This is using MRUnit 1.1.0, but I got the same results with 1.0.0. Looking
> in the MRUnit code, it doesn't look like the {{MapDriverBase.mapInputPath}}
> member variable actually gets used anywhere.
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