Martin Häusler created TINKERPOP-1076:
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Summary: Gremlin Tests cannot be executed individually
Key: TINKERPOP-1076
URL: https://issues.apache.org/jira/browse/TINKERPOP-1076
Project: TinkerPop
Issue Type: Bug
Components: test-suite
Affects Versions: 3.1.0-incubating
Environment: Gremlin 3.1.0-Incubating, JDK 8, Eclipse Mars, JUnit 4,
Gradle (Dependency Management)
Reporter: Martin Häusler
h2. General description
Using the Eclipse plugin for JUnit, it's easy to run test suites, and then pick
a single failed test from the results (for debugging purposes) and execute only
that particular test. If I try that, I get the exception below.
h2. Exception Stack Trace
{code}
java.lang.NullPointerException
at
org.apache.tinkerpop.gremlin.AbstractGremlinTest.setup(AbstractGremlinTest.java:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
{code}
h2. Reproduction Steps
In Eclipse (maybe this works in other IDEs as well, not sure), run the whole
gremlin structure test suite until it finishes. Then, in the JUnit view, select
a test class (e.g.
{{org.apache.tinkerpop.gremlin.structure.util.detached.DetachedGraphTest}}),
right-click it, and select "run". It fails with the given exception. The same
thing holds true if an individual test method is selected.
h2. Rationale
I have to run the whole suite just to get to a particular test which is tedious
for debugging, because breakpoints are likely to be hit by other (passing)
tests as well, so I potentially have to skip over lots and lots of breakpoints
until I finally arrive at the test I intended to debug. Plus, it's general good
test design if each test is executable independently.
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