JUnit 4: how do I create a suite of suites?

Question

Running the junit below raises an exception.

import org.junit.runner.RunWith;
import org.junit.runners.Suite;
import org.junit.runners.Suite.SuiteClasses;

import com.prosveta.backend.daoimpl.AllDaoImplTests;

/**
 * Short desc.
 *
 * Longer desc.
 *
 * @author Jean-Pierre Schnyder
 *
 */
@RunWith(Suite.class)
@SuiteClasses({AllDaoImplTests.class,AllServiceImplTests.class})
public class AllBackendTests {
}

Stack trace

java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxy
    at sun.reflect.annotation.AnnotationParser.parseClassArray(AnnotationParser.java:653)
    at sun.reflect.annotation.AnnotationParser.parseArray(AnnotationParser.java:460)
    at sun.reflect.annotation.AnnotationParser.parseMemberValue(AnnotationParser.java:286)
    at sun.reflect.annotation.AnnotationParser.parseAnnotation(AnnotationParser.java:222)
    at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:69)
    at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:52)
    at java.lang.Class.initAnnotationsIfNecessary(Class.java:3070)
    at java.lang.Class.getAnnotations(Class.java:3050)
    at org.junit.runner.Description.createSuiteDescription(Description.java:72)
    at org.junit.internal.runners.ErrorReportingRunner.getDescription(ErrorReportingRunner.java:25)
    at org.junit.runner.Runner.testCount(Runner.java:38)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.countTestCases(JUnit4TestClassReference.java:30)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.countTests(RemoteTestRunner.java:487)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:455)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Thanks for your answer !

Answer 1

I finally found a way of doing what I wanted to achieve with running a junit 4 suite of suites, i.e. running all the tests in all the modules of a multimodule project. To do that, use the Johannes Link ClassPathSuite tool.

Download the jar, install it in your maven repo, create a allTests project which depends on your other projects where your junits reside and create an AllTestClass. Here are some code and scn capture to illustrate the solution:

Install the jar into your maven repo

Create an allTests project

the pom ...

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.prosveta.backend</groupId>
<artifactId>alltests</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
    <dependency>
        <groupId>com.prosveta.backend</groupId>
        <artifactId>serviceimpl</artifactId>
        <version>1.0-SNAPSHOT</version>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>com.prosveta.backend</groupId>
        <artifactId>daoimpl</artifactId>
        <version>1.0-SNAPSHOT</version>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>com.prosveta.backend</groupId>
        <artifactId>model</artifactId>
        <version>1.0-SNAPSHOT</version>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.junit.extensions</groupId>
        <artifactId>cpsuite</artifactId>
        <version>1.2.5</version>
        <type>jar</type>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.8.2</version>
        <type>jar</type>
        <scope>compile</scope>
    </dependency>
</dependencies>

Add dependencies in Eclipse ...

and here is the all tests class

package com.prosveta.backend.serviceimpl;

import org.junit.extensions.cpsuite.ClasspathSuite;
import org.junit.runner.RunWith;

@RunWith(ClasspathSuite.class)
public class AllBackendTests {
}

which you just "run as JUnit".