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From Christopher <ctubb...@apache.org>
Subject Re: Issue with classpath in unit tests
Date Thu, 18 Jun 2015 15:00:26 GMT
The problem looks like it is this:

Could not find file with URI "/lib/ext/[^.].*.jar" because it is a
relative path, and no base URI was provided.

It looks like this value is actually
"$ACCUMULO_HOME/lib/ext/[^.].*.jar", but that value is not set in the
environment. You can set this in your environment when you execute
surefire:
https://maven.apache.org/surefire/maven-surefire-plugin/test-mojo.html#environmentVariables

In general, you should probably avoid using mock for testing, though.
It's a bit unreliable, is relatively poorly maintained, and is an
incomplete implementation of Accumulo. Many of its features work very
differently than a real Accumulo, also, so it is not an adequate test
framework. It still has some utility, but only if one really
understands where its shortcomings are, and its expected divergences
from a real Accumulo instance. We've had discussions before among the
developers about deprecating mock, but we haven't yet come to
consensus on that. I would urge you to take a look at
MiniAccumuloCluster and see if that might be able to satisfy your
testing needs.

--
Christopher L Tubbs II
http://gravatar.com/ctubbsii


On Thu, Jun 18, 2015 at 8:17 AM, michael.griffiths3@baesystems.com
<michael.griffiths3@baesystems.com> wrote:
> All,
>
>
>
> I’m having an issue but I’m probably missing something simple. I am
> specifying a custom encoder for the SummingArrayCombiner but during unit
> testing (using MockInstance) it cannot find the class in my local project?
>
>
>
> The code is below:
>
>
>
> MockInstance instance = new MockInstance();
> accumulo = instance.getConnector("user", new PasswordToken("password"));
> assertTrue(accumulo.instanceOperations().testClassLoad(FixedLengthLongArrayEncoder.class.getName(),
> FixedLengthLongArrayEncoder.class.getTypeName()));
>
>
>
> The test fails due to:
>
>
>
> java.lang.ClassNotFoundException: IO Error loading class
> com.baesystems.ai.np.accumulo.iterators.lists.FixedLengthLongArrayEncoder
>
>        at
> org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.loadClass(AccumuloVFSClassLoader.java:114)
>
>        at
> org.apache.accumulo.core.client.mock.MockInstanceOperationsImpl.testClassLoad(MockInstanceOperationsImpl.java:70)
>
>        at
> com.baesystems.ai.np.accumulo.aggregates.ScanTimeAggregateTest.createAccumuloInstance(ScanTimeAggregateTest.java:41)
>
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>
>        at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>
>        at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>
>        at java.lang.reflect.Method.invoke(Method.java:497)
>
>        at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
>
>        at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>
>        at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
>
>        at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
>
>        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
>
>        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$2.evaluate(ParentRunner.java:229)
>
>        at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
>
>        at
> org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
>
>        at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123)
>
>        at
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104)
>
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>
>        at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>
>        at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>
>        at java.lang.reflect.Method.invoke(Method.java:497)
>
>        at
> org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
>
>        at
> org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
>
>        at
> org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175)
>
>        at
> org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:107)
>
>        at
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:68)
>
> Caused by: org.apache.commons.vfs2.FileSystemException: Could not find file
> with URI "/lib/ext/[^.].*.jar" because it is a relative path, and no base
> URI was provided.
>
>        at
> org.apache.commons.vfs2.impl.DefaultFileSystemManager.resolveFile(DefaultFileSystemManager.java:719)
>
>        at
> org.apache.commons.vfs2.impl.DefaultFileSystemManager.resolveFile(DefaultFileSystemManager.java:649)
>
>        at
> org.apache.commons.vfs2.impl.DefaultFileSystemManager.resolveFile(DefaultFileSystemManager.java:605)
>
>        at
> org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.resolve(AccumuloVFSClassLoader.java:143)
>
>        at
> org.apache.accumulo.start.classloader.vfs.AccumuloReloadingVFSClassLoader.<init>(AccumuloReloadingVFSClassLoader.java:100)
>
>        at
> org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.createDynamicClassloader(AccumuloVFSClassLoader.java:197)
>
>        at
> org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.getClassLoader(AccumuloVFSClassLoader.java:216)
>
>        at
> org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.loadClass(AccumuloVFSClassLoader.java:112)
>
>        ... 31 more
>
>
>
> Any ideas on what I’m doing wrong? For remote testing I’m aware I need to
> include the JAR in Accumulo’s classpath, but how is this achieved in local
> unit tests?
>
>
>
> Many thanks,
>
>
>
> Michael
>
>
>
> Michael Griffiths
> Developer
> BAE Systems Applied Intelligence
> ___________________________________________________________
>
> T: +44 (0) 1483 816476  |  E: michael.griffiths3@baesystems.com
>
> BAE Systems Applied Intelligence, Surrey Research Park, Guildford, Surrey,
> GU2 7RQ.
> www.baesystems.com/ai
>
>
>
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