Not compatible with JUnitParams when using @PowerMockRunnerDelegate(JUnitParamsRunner.class

[wangjingfei]

I have the following unit test:

import junitparams.JUnitParamsRunner;
import junitparams.Parameters;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.modules.junit4.PowerMockRunner;
import org.powermock.modules.junit4.PowerMockRunnerDelegate;

import static org.junit.Assert.assertTrue;

/**
 * Created by fify on 7/28/16.
 */
@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(JUnitParamsRunner.class)
public class PowerMockWithJUnitParamsTest {
    @Test
    @Parameters({"1, 2, 3", "3, 4, 7"})
    public void testParameters(int a, int b, int check) {
        assertTrue(a + b == check);
    }
}

But when I ran it, the following exception was thrown:

java.lang.IllegalStateException: No match found
    at java.util.regex.Matcher.group(Matcher.java:536)
    at java.util.regex.Matcher.group(Matcher.java:496)
    at org.powermock.modules.junit4.internal.impl.NotificationBuilder.determineTestMethod(NotificationBuilder.java:141)
    at org.powermock.modules.junit4.internal.impl.NotificationBuilder.access$000(NotificationBuilder.java:37)
    at org.powermock.modules.junit4.internal.impl.NotificationBuilder$OngoingTestRun.<init>(NotificationBuilder.java:85)
    at org.powermock.modules.junit4.internal.impl.NotificationBuilder.testStartHasBeenFired(NotificationBuilder.java:231)
    at org.powermock.modules.junit4.internal.impl.PowerMockRunNotifier.fireTestStarted(PowerMockRunNotifier.java:109)
    at org.junit.internal.runners.model.EachTestNotifier.fireTestStarted(EachTestNotifier.java:42)
    at junitparams.internal.ParameterisedTestMethodRunner.runMethodInvoker(ParameterisedTestMethodRunner.java:45)
    at junitparams.internal.ParameterisedTestMethodRunner.runTestMethod(ParameterisedTestMethodRunner.java:40)
    at junitparams.internal.ParameterisedTestClassRunner.runParameterisedTest(ParameterisedTestClassRunner.java:146)
    at junitparams.JUnitParamsRunner.runChild(JUnitParamsRunner.java:417)
    at junitparams.JUnitParamsRunner.runChild(JUnitParamsRunner.java:386)
    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.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner$2.call(DelegatingPowerMockRunner.java:143)
    at org.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner$2.call(DelegatingPowerMockRunner.java:136)
    at org.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner.withContextClassLoader(DelegatingPowerMockRunner.java:127)
    at org.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner.run(DelegatingPowerMockRunner.java:136)
    at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:106)
    at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)
    at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)

The DisplayName passed with description.getDisplayName() looks like

[0] 1, 2, 3 (testParameters)(cn.irenshi.biz.attendance.service.PowerMockWithJUnitParamsTest)

But the org.powermock.modules.junit4.internal.impl.NotificationBuilder only accepts descriptions matches ^[^\(\[]++.

Although there is a workround, I think we should accept more method description formats.

---

Workaround: Set the JUnitParams.flat system property.
For example, if you use maven, you can set it like:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.19.1</version>
    <configuration>
        <systemPropertyVariables>
            <JUnitParams.flat>true</JUnitParams.flat>
        </systemPropertyVariables>
    </configuration>
</plugin>