How can I run tests that use the ProjectBuilder with PowerMock?

Old Forum Archive
1

I am using PowerMock to verify a static call to JavaCC in a Gradle task.

In my @Before annotated method (I’m using JUnit4 and Mockito, BTW), I have this:

Project project = ProjectBuilder.builder().build(); When I run any test case in this class annotated with

@RunWith(PowerMockRunner.class) I get the following:

java.lang.NoClassDefFoundError: Could not initialize class org.gradle.testfixtures.internal.ProjectBuilderImpl

at org.gradle.testfixtures.ProjectBuilder.(ProjectBuilder.java:46)

at org.gradle.testfixtures.ProjectBuilder.builder(ProjectBuilder.java:54)

at ca.coglinc.gradle.plugins.javacc.CompileJavaccTaskTest.setUp(CompileJavaccTaskTest.java:43)

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.internal.runners.MethodRoadie.runBefores(MethodRoadie.java:132)

at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:95)

at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:294)

at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:127)

at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82)

at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:282)

at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:86)

at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49)

at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:207)

at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:146)

at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:120)

at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:33)

at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:45)

at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:122)

at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:104)

at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)

at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:53)

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: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)

I think I am missing the Gradle runtime configuration on my test classpath, but can not find how to fix it. Removing the PowerMockRunner, my tests run correctly, but then I can’t have a test that depends on PowerMock (I know stuff should be testable without requiring PowerMock, but I’m not writing JavaCC and still want to verify that it’s called with some parameters). Any ideas?

2

Someone suggested on SO to add useTestNG() to my test configuration.

I did just that, without changing my test class or my dependencies and it works. Runnin gradle dependencies shows no difference in the testCompile or testRuntime configurations. How does it work?

3

Apparently, this is due to the use of getClass().getProtectionDomain() in the call chain of one static initializer in ProjectBuilderImpl. This answer on SO explains a little bit.