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How to use serial method of org.junit.runner.Computer class

Best junit code snippet using org.junit.runner.Computer.serial

Source:JUnitCoreWrapper.java

...37import java.util.Queue;38import static org.apache.maven.surefire.common.junit4.JUnit4Reflector.createDescription;39import static org.apache.maven.surefire.common.junit4.JUnit4Reflector.createIgnored;40import static org.apache.maven.surefire.common.junit4.JUnit4RunListener.rethrowAnyTestMechanismFailures;41import static org.junit.runner.Computer.serial;42import static org.junit.runner.Request.classes;43/**44 * Encapsulates access to JUnitCore45 *46 * @author Kristian Rosenvold47 */48final class JUnitCoreWrapper49{50    private final Notifier notifier;51    private final JUnitCoreParameters jUnitCoreParameters;52    private final ConsoleLogger logger;53    JUnitCoreWrapper( Notifier notifier, JUnitCoreParameters jUnitCoreParameters, ConsoleLogger logger )54    {55        this.notifier = notifier;56        this.jUnitCoreParameters = jUnitCoreParameters;57        this.logger = logger;58    }59    void execute( TestsToRun testsToRun, Filter filter )60        throws TestSetFailedException61    {62        execute( testsToRun, true, Collections.<RunListener>emptyList(), filter );63    }64    void execute( TestsToRun testsToRun, Collection<RunListener> listeners, Filter filter )65            throws TestSetFailedException66    {67        execute( testsToRun, false, listeners, filter );68    }69    private void execute( TestsToRun testsToRun, boolean useIterated, Collection<RunListener> listeners, Filter filter )70        throws TestSetFailedException71    {72        if ( testsToRun.allowEagerReading() )73        {74            executeEager( testsToRun, filter, listeners );75        }76        else77        {78            executeLazy( testsToRun, useIterated, filter, listeners );79        }80    }81    private JUnitCore createJUnitCore( Notifier notifier, Collection<RunListener> listeners )82    {83        JUnitCore junitCore = new JUnitCore();84        // custom listeners added last85        notifier.addListeners( listeners );86        return junitCore;87    }88    private void executeEager( TestsToRun testsToRun, Filter filter, Collection<RunListener> listeners )89        throws TestSetFailedException90    {91        JUnitCore junitCore = createJUnitCore( notifier, listeners );92        Class<?>[] tests = testsToRun.getLocatedClasses();93        Computer computer = createComputer();94        createRequestAndRun( filter, computer, junitCore.withReportedTests( tests ), tests );95    }96    private void executeLazy( TestsToRun testsToRun, boolean useIterated, Filter filter,97                              Collection<RunListener> listeners )98        throws TestSetFailedException99    {100        JUnitCore junitCore = createJUnitCore( notifier, listeners );101        for ( Iterator<Class<?>> it = useIterated ? testsToRun.iterated() : testsToRun.iterator(); it.hasNext(); )102        {103            Class<?> clazz = it.next();104            Computer computer = createComputer();105            createRequestAndRun( filter, computer, junitCore.withReportedTests( clazz ), clazz );106        }107    }108    private void createRequestAndRun( Filter filter, Computer computer, JUnitCore junitCore, Class<?>... classesToRun )109        throws TestSetFailedException110    {111        Request req = classes( computer, classesToRun );112        if ( filter != null )113        {114            req = new FilteringRequest( req, filter );115            if ( req.getRunner() == null )116            {117                // nothing to run118                return;119            }120        }121        Result run = junitCore.run( req.getRunner() );122        rethrowAnyTestMechanismFailures( run );123        if ( computer instanceof ParallelComputer )124        {125            String timeoutMessage = ( (ParallelComputer) computer ).describeElapsedTimeout();126            if ( timeoutMessage.length() != 0 )127            {128                throw new TestSetFailedException( timeoutMessage );129            }130        }131    }132    private Computer createComputer()133    {134        return jUnitCoreParameters.isNoThreading()135            ? serial()136            : new ParallelComputerBuilder( logger, jUnitCoreParameters ).buildComputer();137    }138    private final class JUnitCore139        extends org.apache.maven.surefire.junitcore.JUnitCore140    {141        JUnitCore()142        {143            super( JUnitCoreWrapper.this.notifier );144        }145        JUnitCore withReportedTests( Class<?>... tests )146        {147            Queue<String> stoppedTests = JUnitCoreWrapper.this.notifier.getRemainingTestClasses();148            if ( stoppedTests != null )149            {...

Source:JUnitTestingUtils.java

...105	 * {@link RunWith @RunWith} or the default JUnit runner, and assert the106	 * expectations of the test execution.107	 *108	 * <p>To have all tests executed in parallel, supply {@link ParallelComputer#methods()}109	 * as the {@code Computer}. To have all tests executed serially, supply110	 * {@link Computer#serial()} as the {@code Computer}.111	 *112	 * @param computer the JUnit {@code Computer} to use113	 * @param expectedStartedCount the expected number of tests that started114	 * @param expectedFailedCount the expected number of tests that failed115	 * @param expectedFinishedCount the expected number of tests that finished116	 * @param expectedIgnoredCount the expected number of tests that were ignored117	 * @param expectedAssumptionFailedCount the expected number of tests that118	 * resulted in a failed assumption119	 * @param testClasses one or more test classes to run120	 */121	public static void runTestsAndAssertCounters(Computer computer, int expectedStartedCount, int expectedFailedCount,122			int expectedFinishedCount, int expectedIgnoredCount, int expectedAssumptionFailedCount,123			Class<?>... testClasses) throws Exception {124		JUnitCore junit = new JUnitCore();...

Source:TestRunner.java

...19		JUnitCore jUnitCore = new JUnitCore();20        RunListener runListener = new TextListener(System.out);21        jUnitCore.addListener(runListener);2223        Result result = jUnitCore.run(Computer.serial(), VinciTests.class);24        25        java.awt.Toolkit.getDefaultToolkit().beep();26        27        //System.out.println(result);28        29        return result.getFailureCount()==0 ? 0 : 1;30	}31	32	@Override33	public void stop() {34		// NOP35	}3637}
...

Source:Computer.java

1public class org.junit.runner.Computer {2  public org.junit.runner.Computer();3  public static org.junit.runner.Computer serial();4  public org.junit.runner.Runner getSuite(org.junit.runners.model.RunnerBuilder, java.lang.Class<?>[]) throws org.junit.runners.model.InitializationError;5  protected org.junit.runner.Runner getRunner(org.junit.runners.model.RunnerBuilder, java.lang.Class<?>) throws java.lang.Throwable;6}...

serial

Using AI Code Generation

1import org.junit.runner.Computer;2import org.junit.runner.JUnitCore;3import org.junit.runner.Result;4import org.junit.runner.notification.Failure;5public class TestRunner {6    public static void main(String[] args) {7        Result result = JUnitCore.runClasses(Computer.serial(), TestJunit.class);8        for (Failure failure : result.getFailures()) {9            System.out.println(failure.toString());10        }11        System.out.println(result.wasSuccessful());12    }13}14import org.junit.runner.Computer;15import org.junit.runner.JUnitCore;16import org.junit.runner.Result;17import org.junit.runner.notification.Failure;18public class TestRunner {19    public static void main(String[] args) {20        Result result = JUnitCore.runClasses(Computer.parallel(), TestJunit.class);21        for (Failure failure : result.getFailures()) {22            System.out.println(failure.toString());23        }24        System.out.println(result.wasSuccessful());25    }26}27    at org.junit.Assert.assertEquals(Assert.java:115)28    at org.junit.Assert.assertEquals(Assert.java:144)29    at TestJunit.testAdd(TestJunit.java:13)30    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)31    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)32    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)33    at java.lang.reflect.Method.invoke(Method.java:498)34    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)35    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)36    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)37    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)38    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)39    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)40    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)41    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

serial

Using AI Code Generation

1public class SerialComputer extends Computer {2    public Runner getSuite(final RunnerBuilder builder, Class<?>[] classes) throws InitializationError {3        return new Runner() {4            public Description getDescription() {5                return Description.createSuiteDescription("Serial Suite", classes);6            }7            public void run(RunNotifier notifier) {8                for (Class<?> each : classes) {9                    try {10                        builder.runnerForClass(each).run(notifier);11                    } catch (Throwable e) {12                        notifier.fireTestFailure(new Failure(getDescription(), e));13                    }14                }15            }16        };17    }18}19public class ParallelComputer extends Computer {20    public Runner getSuite(final RunnerBuilder builder, Class<?>[] classes) throws InitializationError {21        return new Runner() {22            public Description getDescription() {23                return Description.createSuiteDescription("Parallel Suite", classes);24            }25            public void run(RunNotifier notifier) {26                runChildren(notifier, builder, classes);27            }28        };29    }30    private void runChildren(final RunNotifier notifier, final RunnerBuilder builder, Class<?>[] children) {31        final List<Throwable> errors = Collections.synchronizedList(new ArrayList<Throwable>());32        ExecutorService service = Executors.newFixedThreadPool(children.length);33        for (final Class<?> each : children) {34            service.submit(new Runnable() {35                public void run() {36                    try {37                        builder.runnerForClass(each).run(notifier);38                    } catch (Throwable e) {39                        errors.add(e);40                    }41                }42            });43        }44        service.shutdown();45        try {46            service.awaitTermination(Long.MAX_VALUE, TimeUnit.SECONDS);47        } catch (InterruptedException e) {48            e.printStackTrace();49        }50        if (!errors.isEmpty()) {51            throw new MultipleFailureException(errors);52        }53    }54}55public class ParallelComputer extends Computer {56    public Runner getSuite(final RunnerBuilder builder, Class<?>[] classes) throws InitializationError {57        return new Runner() {58            public Description getDescription() {59                return Description.createSuiteDescription("Parallel Suite", classes);60            }61            public void run(RunNotifier notifier) {62                runChildren(notifier, builder, classes);

serial

Using AI Code Generation

1 * A {@code Computer} is responsible for running tests in a particular2 * environment. For example, a {@code Computer} for the Java virtual machine3 * might run tests in a single thread. A {@code Computer} for a web browser4 * <p>When JUnit runs a test suite, it uses a {@code Computer} to build5 * a {@link Runner} for each test class. The {@code Runner} is then asked6 * <p>JUnit provides two {@code Computer}s:7 * <li>{@link JUnitCore}: Runs tests in a single thread, as in JUnit 3.8 and8 * <li>{@link org.junit.experimental.ParallelComputer}: Runs tests in multiple9 * threads, as in JUnit 4.4 and earlier. This {@code Computer} is used by10 * <p>JUnit also provides a {@link Computer} that runs tests in parallel11 * {@link org.junit.experimental.ParallelComputer} to12public abstract class Computer {13     * Returns a {@code Runner} for {@code testClass}. The returned14     * {@code Runner} is responsible for running the tests in15     * @return a {@code Runner} for {@code testClass}16    public abstract Runner getSuite(RunNotifier notifier, Class<?>... testClasses)17            throws InitializationError;18     * Returns a {@code Runner} for {@code testClass}. The returned

serial

Using AI Code Generation

1import org.junit.runner.JUnitCore;2import org.junit.runner.Result;3import org.junit.runner.notification.Failure;4import org.junit.runner.Computer;5public class TestRunner {6 public static void main(String[] args) {7  Result result = JUnitCore.runClasses(new Computer(), TestJunit1.class, TestJunit2.class);8  for (Failure failure : result.getFailures()) {9   System.out.println(failure.toString());10  }11  System.out.println(result.wasSuccessful());12 }13}14	at org.junit.Assert.assertEquals(Assert.java:115)15	at org.junit.Assert.assertEquals(Assert.java:144)16	at TestJunit1.testAdd(TestJunit1.java:12)17	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)18	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)19	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)20	at java.lang.reflect.Method.invoke(Method.java:601)21	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)22	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)23	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)24	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)25	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)26	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)27	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)28	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)29	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)30	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)31	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)32	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)33	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)34	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)35	at org.junit.runner.JUnitCore.run(JUnitCore.java:115)36	at org.junit.runner.Computer$1.run(Computer.java:68)

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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.
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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.
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Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
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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.
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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.