How to use asTestList method of junit.framework.JUnit4TestAdapterCache class

Best junit code snippet using junit.framework.JUnit4TestAdapterCache.asTestList

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...92 this.cache = cache;93 this.serviceFacadeContractTest = serviceFacadeContractTest;94 }95 @Override96 public List<Test> asTestList(Description description) {97 return this.cache.asTestList(description);98 }99 @Override100 public RunNotifier getNotifier(TestResult result, JUnit4TestAdapter adapter) {101 return this.cache.getNotifier(result, adapter);102 }103 @Override104 public Test asTest(Description description) {105 return new TestDecorator(this.cache.asTest(description), this.serviceFacadeContractTest);106 }107 }108 static class TestDecorator implements Test {109 private Test test;110 private ServiceFacadeContractTest serviceFacadeContractTest;111 public TestDecorator(Test test, ServiceFacadeContractTest serviceFacadeContractTest) {...

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...39/​* */​ }40/​* */​ 41/​* */​ 42/​* */​ public List<Test> getTests() {43/​* 43 */​ return this.fCache.asTestList(getDescription());44/​* */​ }45/​* */​ 46/​* */​ 47/​* */​ public Class<?> getTestClass() {48/​* 48 */​ return this.fNewTestClass;49/​* */​ }50/​* */​ 51/​* */​ public Description getDescription() {52/​* 52 */​ Description description = this.fRunner.getDescription();53/​* 53 */​ return removeIgnored(description);54/​* */​ }55/​* */​ 56/​* */​ private Description removeIgnored(Description description) {57/​* 57 */​ if (isIgnored(description)) {...

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...61/​* */​ });62/​* 62 */​ return notifier;63/​* */​ }64/​* */​ 65/​* */​ public List<Test> asTestList(Description description) {66/​* 66 */​ if (description.isTest()) {67/​* 67 */​ return Arrays.asList(new Test[] { asTest(description) });68/​* */​ }69/​* 69 */​ List<Test> returnThis = new ArrayList<Test>();70/​* 70 */​ for (Description child : description.getChildren()) {71/​* 71 */​ returnThis.add(asTest(child));72/​* */​ }73/​* 73 */​ return returnThis;74/​* */​ }75/​* */​ }76/​* Location: /​home/​arpit/​Downloads/​Picking-Tool-6.5.2.jar!/​junit/​framework/​JUnit4TestAdapterCache.class77 * Java compiler version: 5 (49.0)78 * JD-Core Version: 1.1.379 */​...

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...48 fRunner.run(fCache.getNotifier(result, this));49 }50 /​/​ reflective interface for Eclipse51 public List<Test> getTests() {52 return fCache.asTestList(getDescription());53 }54 /​/​ reflective interface for Eclipse55 public Class<?> getTestClass() {56 return fNewTestClass;57 }58 59 public Description getDescription() {60 Description description= fRunner.getDescription(); 61 return removeIgnored(description);62 }63 private Description removeIgnored(Description description) {64 if (isIgnored(description))65 return Description.EMPTY;66 Description result = description.childlessCopy();...

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asTestList

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1import junit.framework.JUnit4TestAdapterCache;2import org.junit.runner.JUnitCore;3import org.junit.runner.Result;4import org.junit.runner.notification.Failure;5import java.util.List;6public class TestRunner {7 public static void main(String[] args) {8 Result result = JUnitCore.runClasses(TestJunit.class);9 for (Failure failure : result.getFailures()) {10 System.out.println(failure.toString());11 }12 System.out.println(result.wasSuccessful());13 }14}15package com.mkyong.core;16import org.junit.Test;17import static org.junit.Assert.assertEquals;18public class TestJunit {19 String message = "Robert";20 MessageUtil messageUtil = new MessageUtil(message);21 public void testPrintMessage() {22 System.out.println("Inside testPrintMessage()");23 assertEquals(message, messageUtil.printMessage());24 }25}26package com.mkyong.core;27public class MessageUtil {28 private String message;29 public MessageUtil(String message) {30 this.message = message;31 }32 public String printMessage() {33 System.out.println(message);34 return message;35 }36}37Inside testPrintMessage()

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asTestList

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1import junit.framework.JUnit4TestAdapterCache;2public class TestRunner {3 public static void main(String[] args) {4 junit.textui.TestRunner.run(JUnit4TestAdapterCache.asTestList(TestSuite.class));5 }6}7import org.junit.runner.RunWith;8import org.junit.runners.Suite;9@RunWith(Suite.class)10@Suite.SuiteClasses({Test1.class, Test2.class, Test3.class})11public class TestSuite {12}13import org.junit.Test;14import static org.junit.Assert.*;15public class Test1 {16 public void test1() {17 assertTrue(true);18 }19}20import org.junit.Test;21import static org.junit.Assert.*;22public class Test2 {23 public void test2() {24 assertTrue(true);25 }26}27import org.junit.Test;28import static org.junit.Assert.*;29public class Test3 {30 public void test3() {31 assertTrue(true);32 }33}34OK (1 test)

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asTestList

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1import org.junit.Test;2import org.junit.Before;3import org.junit.After;4import static org.junit.Assert.*;5public class TestJUnit4TestAdapterCache {6 public void test1() {7 }8 public void test2() {9 }10 public void test3() {11 }12}13import org.junit.Test;14import org.junit.Before;15import org.junit.After;16import static org.junit.Assert.*;17public class TestJUnit4TestAdapterCache {18 public void test1() {19 }20 public void test2() {21 }22 public void test3() {23 }24}25import org.junit.Test;26import org.junit.Before;27import org.junit.After;28import static org.junit.Assert.*;29public class TestJUnit4TestAdapterCache {30 public void test1() {31 }32 public void test2() {33 }34 public void test3() {35 }36}37import org.junit.Test;38import org.junit.Before;39import org.junit.After;40import static org.junit.Assert.*;41public class TestJUnit4TestAdapterCache {42 public void test1() {43 }44 public void test2() {45 }46 public void test3() {47 }48}49import org.junit.Test;50import org.junit.Before;51import org.junit.After;52import static org.junit.Assert.*;53public class TestJUnit4TestAdapterCache {54 public void test1() {

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1package com.journaldev.junit;2import java.util.List;3import org.junit.runner.JUnitCore;4import org.junit.runner.Result;5import org.junit.runner.notification.Failure;6public class JUnit4TestRunner {7 public static void main(String[] args) {8 JUnitCore junit = new JUnitCore();9 Result result = junit.run(JUnit4Test.class);10 for(Failure failure : result.getFailures()){11 System.out.println(failure.toString());12 }13 System.out.println(result.wasSuccessful());14 }15}16package com.journaldev.junit;17import java.util.ArrayList;18import java.util.List;19import org.junit.runner.JUnitCore;20import org.junit.runner.Request;21import org.junit.runner.Result;22import org.junit.runner.notification.Failure;23public class JUnit4TestRunner2 {24 public static void main(String[] args) {25 JUnitCore junit = new JUnitCore();26 List<Class> testClasses = new ArrayList<Class>();27 testClasses.add(JUnit4Test.class);28 testClasses.add(JUnit4Test2.class);29 List<Request> requests = new ArrayList<Request>();30 for(Class testClass : testClasses){31 requests.add(Request.aClass(testClass));32 }33 Result result = junit.run(requests.toArray(new Request[requests.size()]));34 for(Failure failure : result.getFailures()){35 System.out.println(failure.toString());36 }37 System.out.println(result.wasSuccessful());38 }39}40package com.journaldev.junit;41import java.util.ArrayList;42import java.util.List;43import org.junit.runner.JUnitCore;44import org.junit.runner.Result;45import org.junit.runner.notification.Failure;46public class JUnit4TestRunner3 {47 public static void main(String[] args) {48 JUnitCore junit = new JUnitCore();

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JUnit 5 provides a way out of the box.

JUnit 5 = JUnit Platform + JUnit Jupiter + JUnit Vintage

Each one is a distinct project and using all of them allows to compile and execute JUnit 4 and JUnit 5 tests in a same project.

JUnit Jupiter is the combination of the new programming model and extension model for writing tests and extensions in JUnit 5.

JUnit Vintage provides a TestEngine for running JUnit 3 and JUnit 4 based tests on the platform.

The JUnit Platform serves as a foundation for launching testing frameworks on the JVM


Update : from Maven Surefire 2.22.0

From the JUnit 5 documentation :

Starting with version 2.22.0, Maven Surefire provides native support for executing tests on the JUnit Platform.

So the configuration is much simpler.
Note that the junit-4 api dependency is optional as the engine dependencies that are now required already pull a default api version (it is the case for both junit 4 and 5).

Here is a sample pom.xml.

<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>david</groupId>
    <artifactId>jupiter-4-and-5-same-build</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <junit-jupiter.version>5.1.0</junit-jupiter.version>
        <!-- optional : if we want to use a junit4 specific version -->
        <junit.version>4.12</junit.version>
    </properties>
    <dependencies>
        <!--JUnit Jupiter Engine to depend on the JUnit5 engine and JUnit 5 API -->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>${junit-jupiter.version}</version>
            <scope>test</scope>
        </dependency>
        <!--JUnit Jupiter Engine to depend on the JUnit4 engine and JUnit 4 API  -->
        <dependency>
            <groupId>org.junit.vintage</groupId>
            <artifactId>junit-vintage-engine</artifactId>
            <version>${junit-jupiter.version}</version>
        </dependency>
        <!-- Optional : override the JUnit 4 API version provided by junit-vintage-engine -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.22.0</version>
            </plugin>
        </plugins>
    </build>

</project>

On my GitHub space I added a working sample maven project that you can browse/clone. URL: https://github.com/ebundy/junit4-and-5-minimal-maven-project


Old way : for Maven Surefire below 2.22.0

Here is the minimal configuration to use with Maven to configure the project to compile and run both JUnit4 and JUnit5 tests :

<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>mygroup</groupId>
    <artifactId>minimal-conf-junit4-5</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <properties>
        <!-- JUnit 5 depends on JDK 1.8 -->
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <!--  JUnit dependency versions -->
        <junit.version>4.12</junit.version>
        <junit-vintage-engine>4.12.1</junit-vintage-engine>
        <junit-jupiter.version>5.0.1</junit-jupiter.version>
        <junit-platform.version>1.0.1</junit-platform.version>
    </properties>

    <dependencies>
        <!--JUnit Jupiter API to write and compile tests with JUnit5 -->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>${junit-jupiter.version}</version>
            <scope>test</scope>
        </dependency>
        <!-- JUnit 4 to make legacy JUnit 4 tests compile -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.19.1</version> <!-- matters until now-->
                <dependencies>
                    <!-- to let surefire to run JUnit 4 but also JUnit 5 tests -->
                    <dependency>
                        <groupId>org.junit.platform</groupId>
                        <artifactId>junit-platform-surefire-provider</artifactId>
                        <version>${junit-platform.version}</version>
                    </dependency>
                    <!-- JUnit vintage engine to run JUnit 3 or JUnit 4 tests -->
                    <dependency>
                        <groupId>org.junit.vintage</groupId>
                        <artifactId>junit-vintage-engine</artifactId>
                        <version>${junit-vintage-engine}</version>
                    </dependency>
                    <!-- JUnit 5 engine to run JUnit 5 tests -->
                    <dependency>
                        <groupId>org.junit.jupiter</groupId>
                        <artifactId>junit-jupiter-engine</artifactId>
                        <version>${junit-jupiter.version}</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>
</project>

Now mvn test compiles and runs both JUnit 4 and JUnit 5 tests.

Note 1 : the junit-vintage-engine (4.12.1) and the junit (4.12) dependencies don't specify the same exact version.
This is not an issue at all as :

  • their release are not related between them

  • junit-vintage-engine is designed to run any JUnit 3 or 4 tests.

Note 2 : maven-surefire-plugin with the 2.19.1 version matters whatever you want to compile JUnit 5 test classes or both JUnit 4 and JUnit 5 test classes.
Next version of the plugin causes indeed some exceptions during JUnit 5 tests execution but the 2.22.0 that at last solves the issue (see the first part of the answer : "Update : from Maven Surefire 2.22.0").

https://stackoverflow.com/questions/47158583/executing-junit-4-and-junit-5-tests-in-a-same-build

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