Description
I have parameters in both the base and derived test classes. So I want the tests in derived class to run for the cartesian product of those.
Sample code -
@RunWith(Parameterized.class)
public class BaseTest {
public BaseTest() {
}
@BeforeClass
public static void setupbase() {
}
@Parameterized.Parameter(0)
public String baseParam;
@Parameterized.Parameters
public static Collection<Object[]> data() {
return Arrays.asList(new Object[][] {
{ "base1" }, { "base2" }
});
}
}
public class Test1 extends BaseTest {
@BeforeClass
public static void setup() {
}
@Parameterized.Parameter(0)
public String derivedParam;
@Parameterized.Parameters
public static Collection<Object[]> data() {
return Arrays.asList(new Object[][] {
{ "derived1" }, { "derived2" }
});
}
@Test
public void testcase1() {
System.out.println("Base Param = " + baseParam);
System.out.println("Derived Param = " + derivedParam);
}
}
The expected output -
Base Param = base1
Derived Param = derived1
Base Param = base1
Derived Param = derived2
Base Param = base2
Derived Param = derived1
Base Param = base2
Derived Param = derived2
Present error while running -
> java.lang.Exception: @Parameter(0) is used more than once (2).
>
> at org.junit.runners.parameterized.BlockJUnit4ClassRunnerWithParameters.validateFields(BlockJUnit4ClassRunnerWithParameters.java:119)
> at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:129)
> at org.junit.runners.ParentRunner.validate(ParentRunner.java:416)
> at org.junit.runners.ParentRunner.<init>(ParentRunner.java:84)
> at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:65)
> at org.junit.runners.parameterized.BlockJUnit4ClassRunnerWithParameters.<init>(BlockJUnit4ClassRunnerWithParameters.java:27)
> at org.junit.runners.parameterized.BlockJUnit4ClassRunnerWithParametersFactory.createRunnerForTestWithParameters(BlockJUnit4ClassRunnerWithParametersFactory.java:16)
> at org.junit.runners.Parameterized.createRunnersForParameters(Parameterized.java:313)
> at org.junit.runners.Parameterized.<init>(Parameterized.java:248)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
> at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
> at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
> at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
> at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
> at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
> at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:36)
> at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:49)
> at com.intellij.rt.ex
5F6E
ecution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
> at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
> at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
>
>
> java.lang.Exception: @Parameter(1) is never used.
>
> at org.junit.runners.parameterized.BlockJUnit4ClassRunnerWithParameters.validateFields(BlockJUnit4ClassRunnerWithParameters.java:116)
> at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:129)
> at org.junit.runners.ParentRunner.validate(ParentRunner.java:416)
> at org.junit.runners.ParentRunner.<init>(ParentRunner.java:84)
> at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:65)
> at org.junit.runners.parameterized.BlockJUnit4ClassRunnerWithParameters.<init>(BlockJUnit4ClassRunnerWithParameters.java:27)
> at org.junit.runners.parameterized.BlockJUnit4ClassRunnerWithParametersFactory.createRunnerForTestWithParameters(BlockJUnit4ClassRunnerWithParametersFactory.java:16)
> at org.junit.runners.Parameterized.createRunnersForParameters(Parameterized.java:313)
> at org.junit.runners.Parameterized.<init>(Parameterized.java:248)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
> at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
> at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
> at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
> at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
> at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
> at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:36)
Version - Junit 4.12