How to use addListener method of org.junit.runner.JUnitCore class

Best junit code snippet using org.junit.runner.JUnitCore.addListener

Source:JUnitCore.java

...64			} catch (ClassNotFoundException e) {65				System.out.println("Could not find class: " + each);66			}67		RunListener listener= new TextListener();68		addListener(listener);69		return run(classes.toArray(new Class[0]));70	}71	/**72	 * @return the version number of this release73	 */74	public String getVersion() {75		return Version.id();76	}77	78	/**79	 * Run all the tests in <code>classes</code>.80	 * @param classes the classes containing tests81	 * @return a <code>Result</code> describing the details of the test run and the failed tests.82	 */83	public Result run(Class... classes) {84		return run(Request.classes("All", classes));85	}86	/**87	 * Run all the tests contained in <code>request</code>.88	 * @param request the request describing tests89	 * @return a <code>Result</code> describing the details of the test run and the failed tests.90	 */91	public Result run(Request request) {92		return run(request.getRunner());93	}94	/**95	 * Run all the tests contained in JUnit 3.8.x <code>test</code>. Here for backward compatibility.96	 * @param test the old-style test97	 * @return a <code>Result</code> describing the details of the test run and the failed tests.98	 */99	public Result run(junit.framework.Test test) { 100		return run(new OldTestClassRunner(test));101	}102	103	/**104	 * Do not use. Testing purposes only.105	 */106	public Result run(Runner runner) {107		Result result= new Result();108		RunListener listener= result.createListener();109		addFirstListener(listener);110		try {111			fNotifier.fireTestRunStarted(runner.getDescription());112			runner.run(fNotifier);113			fNotifier.fireTestRunFinished(result);114		} finally {115			removeListener(listener);116		}117		return result;118	}119	120	private void addFirstListener(RunListener listener) {121		fNotifier.addFirstListener(listener);122	}123	124	/**125	 * Add a listener to be notified as the tests run.126	 * @param listener the listener127	 * @see org.junit.runner.notification.RunListener128	 */129	public void addListener(RunListener listener) {130		fNotifier.addListener(listener);131	}132	/**133	 * Remove a listener.134	 * @param listener the listener to remove135	 */136	public void removeListener(RunListener listener) {137		fNotifier.removeListener(listener);138	}139}...

Source:RunJUnit4TestsFromJava.java

...10import org.junit.runner.notification.Failure;11public class RunJUnit4TestsFromJava {12    public static void runOne() {13        JUnitCore junit = new JUnitCore();14        junit.addListener(new TextListener(System.out));15        junit.run(FirstUnitTest.class);16    }17    public static void runAllClasses() {18        JUnitCore junit = new JUnitCore();19        junit.addListener(new TextListener(System.out));20        Result result = junit.run(FirstUnitTest.class, SecondUnitTest.class);21        for (Failure failure : result.getFailures()) {22            System.out.println(failure.toString());23        }24        resultReport(result);25    }26    public static void runSuiteOfClasses() {27        JUnitCore junit = new JUnitCore();28        junit.addListener(new TextListener(System.out));29        Result result = junit.run(MyTestSuite.class);30        for (Failure failure : result.getFailures()) {31            System.out.println(failure.toString());32        }33        resultReport(result);34    }35    public static void runRepeated() {36        Test test = new JUnit4TestAdapter(SecondUnitTest.class);37        RepeatedTest repeatedTest = new RepeatedTest(test, 5);38        JUnitCore junit = new JUnitCore();39        junit.addListener(new TextListener(System.out));40        junit.run(repeatedTest);41    }42    public static void runRepeatedSuite() {43        TestSuite mySuite = new ActiveTestSuite();44        JUnitCore junit = new JUnitCore();45        junit.addListener(new TextListener(System.out));46        mySuite.addTest(new RepeatedTest(new JUnit4TestAdapter(FirstUnitTest.class), 5));47        mySuite.addTest(new RepeatedTest(new JUnit4TestAdapter(SecondUnitTest.class), 3));48        junit.run(mySuite);49    }50    public static void resultReport(Result result) {51        System.out.println("Finished. Result: Failures: " +52          result.getFailureCount() + ". Ignored: " +53          result.getIgnoreCount() + ". Tests run: " +54          result.getRunCount() + ". Time: " +55          result.getRunTime() + "ms.");56    }57    public static void main(String[] args) {58        System.out.println("\nRunning one test class:");59        runOne();...

Source:H2OTestRunner.java

...32    JUnitCore jcore = new JUnitCore();33    // Create default "system"34    JUnitSystem jsystem = new RealSystem();35    // Setup default listener36    jcore.addListener(new TextListener(jsystem));37    // Add XML generator listener38    jcore.addListener(new XMLTestReporter());39    Result result = jcore.run(classes.toArray(new Class[0]));40    for (Failure each : missingClasses) {41      System.err.println("FAIL Missing class in H2OTestRunner: " + each);42      result.getFailures().add(each);43    }44    return result;45  }46  public static void main(String[] args) throws Exception {47    H2OTestRunner testRunner = new H2OTestRunner();48    Result result = null;49    result = testRunner.run(args);50    System.exit(result.wasSuccessful() ? 0 : 1);51  }52}...

Source:RunnerTest.java

...23    @Test24    public void newTestCount() {25        JUnitCore runner = new JUnitCore();26        MyListener listener = new MyListener();27        runner.addListener(listener);28        runner.run(Example.class);29        assertEquals(1, listener.testCount);30    }31    public static class ExampleTest extends TestCase {32        public void testEmpty() {33        }34    }35    @Test36    public void oldTestCount() {37        JUnitCore runner = new JUnitCore();38        MyListener listener = new MyListener();39        runner.addListener(listener);40        runner.run(ExampleTest.class);41        assertEquals(1, listener.testCount);42    }43    public static class NewExample {44        @Test45        public void empty() {46        }47    }48    @Test49    public void testFinished() {50        JUnitCore runner = new JUnitCore();51        wasRun = false;52        RunListener listener = new MyListener() {53            @Override54            public void testFinished(Description description) {55                wasRun = true;56            }57        };58        runner.addListener(listener);59        runner.run(NewExample.class);60        assertTrue(wasRun);61    }62}...

Source:TestListenerTest.java

...22    }23    @Test(expected = Error.class)24    public void failingListener() {25        JUnitCore runner = new JUnitCore();26        runner.addListener(new ErrorListener());27        runner.run(OneTest.class);28    }29    class ExceptionListener extends ErrorListener {30        @Override31        public void testRunStarted(Description description) throws Exception {32            count++;33            throw new Exception();34        }35    }36    @Test37    public void reportsFailureOfListener() {38        JUnitCore core = new JUnitCore();39        core.addListener(new ExceptionListener());40        count = 0;41        Result result = core.run(OneTest.class);42        assertEquals(1, count);43        assertEquals(1, result.getFailureCount());44        Failure testFailure = result.getFailures().get(0);45        assertEquals(Description.TEST_MECHANISM, testFailure.getDescription());46    }47    @Test48    public void freshResultEachTime() {49        JUnitCore core = new JUnitCore();50        Result first = core.run(OneTest.class);51        Result second = core.run(OneTest.class);52        assertNotSame(first, second);53    }...

Source:TestRunner.java

...23//	        System.exit(result.wasSuccessful() ? 0 : 1);24	        25	        JUnitCore core = new JUnitCore(); 26//			core.run(TestLogin.class);	        27	        core.addListener(new TextListener(System.out));28	        29	        30	       31			core.addListener(new JUnitResultFormatterAsRunListener(new XMLJUnitResultFormatter()) {32			    @Override33			    public void testStarted(Description description) throws Exception {34			        formatter.setOutput(new FileOutputStream(new File("C:\\Program Files (x86)\\Jenkins\\workspace\\JTest-eService\\report","TEST-"+description.getDisplayName()+".xml")));35			        super.testStarted(description);36			    }37			});38			core.run(TestLogin.class);39	   }40}  	...

addListener

Using AI Code Generation

1public class TestRunner {2    public static void main(String[] args) {3        Result result = JUnitCore.runClasses(TestSuite.class);4        for (Failure failure : result.getFailures()) {5            System.out.println(failure.toString());6        }7        System.out.println(result.wasSuccessful());8    }9}10import org.junit.runner.RunWith;11import org.junit.runners.Suite;12@RunWith(Suite.class)13@Suite.SuiteClasses({TestJunit1.class, TestJunit2.class})14public class TestSuite {15}16import org.junit.Test;17import static org.junit.Assert.assertEquals;18public class TestJunit1 {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}26import org.junit.Test;27import static org.junit.Assert.assertEquals;28public class TestJunit2 {29    String message = "Robert";	30    MessageUtil messageUtil = new MessageUtil(message);31    public void testSalutationMessage() {32        System.out.println("Inside testSalutationMessage()");33        message = "Hi!" + "Robert";34        assertEquals(message,messageUtil.salutationMessage());35    }36}37public class MessageUtil {38    private String message;39    public MessageUtil(String message){40        this.message = message;41    }42    public String printMessage(){43        System.out.println(message);44        return message;45    }46    public String salutationMessage(){47        message = "Hi!" + message;48        System.out.println(message);49        return message;50    }51}52Inside testPrintMessage()53Inside testSalutationMessage()

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Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
Top Java Unit testing frameworks - Here are the upcoming JUnit automation testing frameworks that you can use in 2023 to boost your unit testing.
What is the JUnit framework
Why is JUnit testing important - Learn the importance and numerous benefits of using the JUnit testing framework.
Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
JUnit 5 vs. JUnit 4: Differences - Here is a complete comparison between JUnit 5 and JUnit 4 testing frameworks.
Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
Getting started with JUnit testing - After successfully setting up your JUnit environment, this chapter will help you get started with JUnit testing in no time.
Parallel testing with JUnit - Parallel Testing can be used to reduce test execution time and improve test efficiency. Learn how to perform parallel testing with JUnit.
Annotations in JUnit - When writing automation scripts with JUnit, we can use JUnit annotations to specify the type of methods in our test code. This helps us identify those methods when we run JUnit tests using Selenium WebDriver. Learn in detail what annotations are in JUnit.
Assertions in JUnit - Assertions are used to validate or test that the result of an action/functionality is the same as expected. Learn in detail what assertions are and how to use them while performing JUnit testing.
Parameterization in JUnit - Parameterized Test enables you to run the same automated test scripts with different variables. By collecting data on each method's test parameters, you can minimize time spent on writing tests. Learn how to use parameterization in JUnit.
Nested Tests In JUnit 5 - A nested class is a non-static class contained within another class in a hierarchical structure. It can share the state and setup of the outer class. Learn about nested annotations in JUnit 5 with examples.
Best practices for JUnit testing - Learn about the best practices, such as always testing key methods and classes, integrating JUnit tests with your build, and more to get the best possible results.
Advanced Use Cases for JUnit testing - Take a deep dive into the advanced use cases, such as how to run JUnit tests in Jupiter, how to use JUnit 5 Mockito for Unit testing, and more for JUnit testing.