How to use RunnerBuilder class of org.junit.runners.model package

Best junit code snippet using org.junit.runners.model.RunnerBuilder

Source:ConcurrentSuite.java

2import org.junit.internal.builders.AllDefaultPossibilitiesBuilder;3import org.junit.runner.Runner;4import org.junit.runners.Suite;5import org.junit.runners.model.InitializationError;6import org.junit.runners.model.RunnerBuilder;7import org.junit.runners.model.RunnerScheduler;8import java.util.Arrays;9import java.util.LinkedList;10import java.util.List;11import java.util.Queue;12import java.util.concurrent.CompletionService;13import java.util.concurrent.ExecutorCompletionService;14import java.util.concurrent.ExecutorService;15import java.util.concurrent.Executors;16import java.util.concurrent.Future;17import java.util.concurrent.ThreadFactory;18import java.util.concurrent.atomic.AtomicInteger;19/**20 * @author Mathieu Carbou (mathieu.carbou@gmail.com)21 */22public final class ConcurrentSuite extends Suite {23    public ConcurrentSuite(final Class<?> klass) throws InitializationError {24        super(klass, new AllDefaultPossibilitiesBuilder(true) {25            @Override26            public Runner runnerForClass(Class<?> testClass) throws Throwable {27                List<RunnerBuilder> builders = Arrays.asList(28                        new RunnerBuilder() {29                            @Override30                            public Runner runnerForClass(Class<?> testClass) throws Throwable {31                                Concurrent annotation = testClass.getAnnotation(Concurrent.class);32                                if (annotation != null)33                                    return new ConcurrentJunitRunner(testClass);34                                return null;35                            }36                        },37                        ignoredBuilder(),38                        annotatedBuilder(),39                        suiteMethodBuilder(),40                        junit3Builder(),41                        junit4Builder());42                for (RunnerBuilder each : builders) {43                    Runner runner = each.safeRunnerForClass(testClass);44                    if (runner != null)45                        return runner;46                }47                return null;48            }49        });50        setScheduler(new RunnerScheduler() {51            ExecutorService executorService = Executors.newFixedThreadPool(52                    klass.isAnnotationPresent(Concurrent.class) ?53                            klass.getAnnotation(Concurrent.class).threads() :54                            (int) (Runtime.getRuntime().availableProcessors() * 1.5),55                    new NamedThreadFactory(klass.getSimpleName()));56            CompletionService<Void> completionService = new ExecutorCompletionService<Void>(executorService);...

Source:FastTestsOnlySuite.java

...8import org.junit.runner.RunWith;9import org.junit.runner.Runner;10import org.junit.runners.Suite;11import org.junit.runners.model.InitializationError;12import org.junit.runners.model.RunnerBuilder;13import org.junit.runners.model.Statement;14/**15 * This test suite is intended to assist in rapid development; it filters out some of the slower,16 * more exhaustive tests in the overall test suite to allow for a rapid edit-test cycle.17 */18@RunWith(FastTestsOnlySuite.CustomRunner.class)19@Suite.SuiteClasses({AllTestsSuite.class})20@Categories.ExcludeCategory(SlowTestCategory.class)21public class FastTestsOnlySuite {22  private static InheritableThreadLocal<Boolean> IS_FAST_TEST_SUITE_ACTIVE =23      new InheritableThreadLocal<Boolean>() {24        @Override25        protected Boolean initialValue() {26          return false;27        }28      };29  // This method is used to adjust DataProviders to provide a smaller subset of their test cases30  // when the fast tests31  // are selected32  public static boolean isFastTestSuiteActive() {33    return IS_FAST_TEST_SUITE_ACTIVE.get();34  }35  // Require that this fast suite completes relatively quickly. If you're seeing this timeout get36  // hit, it's time to37  // pare down tests some more. As a general rule of thumb, we should avoid any single test taking38  // more than 10s, and39  // try to keep the number of such slow tests to a minimum.40  @ClassRule public static Timeout timeout = new Timeout(2, TimeUnit.MINUTES);41  @ClassRule public static EnableFastSuite enableFastSuite = new EnableFastSuite();42  // TestRules run over the execution of tests, but not over the generation of parameterized test43  // data...44  private static class EnableFastSuite implements TestRule {45    @Override46    public Statement apply(Statement base, Description description) {47      return new Statement() {48        @Override49        public void evaluate() throws Throwable {50          Boolean oldValue = IS_FAST_TEST_SUITE_ACTIVE.get();51          try {52            IS_FAST_TEST_SUITE_ACTIVE.set(true);53            base.evaluate();54          } finally {55            IS_FAST_TEST_SUITE_ACTIVE.set(oldValue);56          }57        }58      };59    }60  }61  // ... so we also need a custom TestRunner that will pass the flag on to the parameterized test62  // data generators.63  public static class CustomRunner extends Categories {64    public CustomRunner(Class<?> klass, RunnerBuilder builder) throws InitializationError {65      super(66          klass,67          new RunnerBuilder() {68            @Override69            public Runner runnerForClass(Class<?> testClass) throws Throwable {70              Boolean oldValue = IS_FAST_TEST_SUITE_ACTIVE.get();71              try {72                IS_FAST_TEST_SUITE_ACTIVE.set(true);73                Runner r = builder.runnerForClass(testClass);74                return r;75              } finally {76                IS_FAST_TEST_SUITE_ACTIVE.set(oldValue);77              }78            }79          });80    }81  }...

Source:ParallelSuite.java

...23 */24package com.apothesource.pillfill.service;25import org.junit.runners.Suite;26import org.junit.runners.model.InitializationError;27import org.junit.runners.model.RunnerBuilder;28import org.junit.runners.model.RunnerScheduler;29import java.util.concurrent.ExecutorService;30import java.util.concurrent.Executors;31import java.util.concurrent.TimeUnit;32/**33 * Created by Michael Ramirez on 6/16/15. Copyright 2015, Apothesource, Inc. All Rights Reserved.34 */35public class ParallelSuite extends Suite {36    public ParallelSuite(Class<?> klass, RunnerBuilder builder) throws InitializationError {37        super(klass, builder);38        setScheduler(new RunnerScheduler() {39            private final ExecutorService service = Executors.newCachedThreadPool();40            public void schedule(Runnable childStatement) {41                service.submit(childStatement);42            }43            public void finished() {44                try {45                    service.shutdown();46                    service.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);47                } catch (InterruptedException e) {48                    e.printStackTrace(System.err);49                }50            }...

Source:ParallelComputer.java

...5import org.junit.runner.Computer;6import org.junit.runner.Runner;7import org.junit.runners.ParentRunner;8import org.junit.runners.model.InitializationError;9import org.junit.runners.model.RunnerBuilder;10import org.junit.runners.model.RunnerScheduler;11public class ParallelComputer extends Computer {12    private final boolean classes;13    private final boolean methods;14    public ParallelComputer(boolean z, boolean z2) {15        this.classes = z;16        this.methods = z2;17    }18    public static Computer classes() {19        return new ParallelComputer(true, false);20    }21    public static Computer methods() {22        return new ParallelComputer(false, true);23    }24    private static Runner parallelize(Runner runner) {25        if (runner instanceof ParentRunner) {26            ((ParentRunner) runner).setScheduler(new RunnerScheduler() {27                private final ExecutorService fService = Executors.newCachedThreadPool();28                public void schedule(Runnable runnable) {29                    this.fService.submit(runnable);30                }31                public void finished() {32                    try {33                        this.fService.shutdown();34                        this.fService.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);35                    } catch (InterruptedException e) {36                        e.printStackTrace(System.err);37                    }38                }39            });40        }41        return runner;42    }43    public Runner getSuite(RunnerBuilder runnerBuilder, Class<?>[] clsArr) throws InitializationError {44        Runner suite = super.getSuite(runnerBuilder, clsArr);45        return this.classes ? parallelize(suite) : suite;46    }47    /* access modifiers changed from: protected */48    public Runner getRunner(RunnerBuilder runnerBuilder, Class<?> cls) throws Throwable {49        Runner runner = super.getRunner(runnerBuilder, cls);50        return this.methods ? parallelize(runner) : runner;51    }52}...

Source:SuiteForSingleParameter.java

2import com.github.peterwippermann.junit4.parameterizedsuite.util.BlockJUnit4ClassRunnerWithParametersUtil;3import org.junit.runner.notification.RunNotifier;4import org.junit.runners.Suite;5import org.junit.runners.model.InitializationError;6import org.junit.runners.model.RunnerBuilder;7import org.junit.runners.model.Statement;8/**9 * This extension of {@link Suite} is used by {@link ParameterizedSuite} to fork10 * a run of the suite's children for a single parameter.11 * 12 * @author Peter Wippermann13 *14 */15public final class SuiteForSingleParameter extends Suite {16	private String suiteName;17	private Object[] singleParameter;18	public SuiteForSingleParameter(RunnerBuilder runnerBuilder, Class<?> forkingSuiteClass, Class<?>[] classes,19			String suiteName, Object[] parameter) throws InitializationError {20		/*21		 * By passing "forkingSuiteClass" (which is the forking22		 * ParameterizedSuite), the JUnit framework will build the internal23		 * testClass attribute from the ParameterizedSuite and not from this24		 * virtual, forked Suite. This way @Before/After/Class can be evaluated.25		 */26		super(runnerBuilder, forkingSuiteClass, classes);27		this.suiteName = suiteName;28		this.singleParameter = parameter;29	}30	protected String getName() {31		return this.suiteName;32	}...

Source:AnnotatedBuilder.java

...4package org.junit.internal.builders;5import org.junit.runner.RunWith;6import org.junit.runner.Runner;7import org.junit.runners.model.InitializationError;8import org.junit.runners.model.RunnerBuilder;9public class AnnotatedBuilder extends RunnerBuilder {10	private static final String CONSTRUCTOR_ERROR_FORMAT= "Custom runner class %s should have a public constructor with signature %s(Class testClass)";11	private RunnerBuilder fSuiteBuilder;12	public AnnotatedBuilder(RunnerBuilder suiteBuilder) {13		fSuiteBuilder= suiteBuilder;14	}15	@Override16	public Runner runnerForClass(Class<?> testClass) throws Exception {17		RunWith annotation= testClass.getAnnotation(RunWith.class);18		if (annotation != null)19			return buildRunner(annotation.value(), testClass);20		return null;21	}22	public Runner buildRunner(Class<? extends Runner> runnerClass,23			Class<?> testClass) throws Exception {24		try {25			return runnerClass.getConstructor(Class.class).newInstance(26					new Object[] { testClass });27		} catch (NoSuchMethodException e) {28			try {29				return runnerClass.getConstructor(Class.class,30						RunnerBuilder.class).newInstance(31						new Object[] { testClass, fSuiteBuilder });32			} catch (NoSuchMethodException e2) {33				String simpleName= runnerClass.getSimpleName();34				throw new InitializationError(String.format(35						CONSTRUCTOR_ERROR_FORMAT, simpleName, simpleName));36			}37		}38	}39}...

Source:RequiredPropertiesSuite.java

1package com.rabbitmq.client.test;2import org.junit.runner.Runner;3import org.junit.runners.Suite;4import org.junit.runners.model.InitializationError;5import org.junit.runners.model.RunnerBuilder;6import java.util.ArrayList;7import java.util.List;8/**9 *10 */11public class RequiredPropertiesSuite extends Suite {12    public RequiredPropertiesSuite(Class<?> klass, RunnerBuilder builder) throws InitializationError {13        super(klass, builder);14    }15    public RequiredPropertiesSuite(RunnerBuilder builder, Class<?>[] classes) throws InitializationError {16        super(builder, classes);17    }18    protected RequiredPropertiesSuite(Class<?> klass, Class<?>[] suiteClasses) throws InitializationError {19        super(klass, suiteClasses);20    }21    protected RequiredPropertiesSuite(RunnerBuilder builder, Class<?> klass, Class<?>[] suiteClasses) throws InitializationError {22        super(builder, klass, suiteClasses);23    }24    protected RequiredPropertiesSuite(Class<?> klass, List<Runner> runners) throws InitializationError {25        super(klass, runners);26    }27    @Override28    protected List<Runner> getChildren() {29        if(!AbstractRMQTestSuite.requiredProperties()) {30            return new ArrayList<Runner>();31        } else {32            return super.getChildren();33        }34    }35}...

Source:Computer.java

1package org.junit.runner;2import org.junit.runners.Suite;3import org.junit.runners.model.InitializationError;4import org.junit.runners.model.RunnerBuilder;5public class Computer {6    public static Computer serial() {7        return new Computer();8    }9    public Runner getSuite(final RunnerBuilder runnerBuilder, Class<?>[] clsArr) throws InitializationError {10        return new Suite((RunnerBuilder) new RunnerBuilder() {11            public Runner runnerForClass(Class<?> cls) throws Throwable {12                return Computer.this.getRunner(runnerBuilder, cls);13            }14        }, clsArr);15    }16    /* access modifiers changed from: protected */17    public Runner getRunner(RunnerBuilder runnerBuilder, Class<?> cls) throws Throwable {18        return runnerBuilder.runnerForClass(cls);19    }20}...

RunnerBuilder

Using AI Code Generation

1import org.junit.runner.notification.RunNotifier;2import org.junit.runners.model.RunnerBuilder;3public class CustomRunnerBuilder extends RunnerBuilder {4    public Runner runnerForClass(Class<?> testClass) throws Throwable {5        return new CustomRunner(testClass);6    }7    public static void main(String[] args) throws Throwable {8        RunnerBuilder builder = new CustomRunnerBuilder();9        JUnitCore core = new JUnitCore();10        core.addListener(new TextListener(System.out));11        core.run(builder, CustomRunnerTest.class);12    }13}14package com.journaldev.junit.runners;15import org.junit.Test;16import org.junit.runner.RunWith;17@RunWith(CustomRunner.class)18public class CustomRunnerTest {19    public void test1() {20        System.out.println("test1");21    }22    public void test2() {23        System.out.println("test2");24    }25}26package com.journaldev.junit.runners;27import org.junit.runner.Description;28import org.junit.runner.Runner;29import org.junit.runner.notification.RunNotifier;30public class CustomRunner extends Runner {31    private Class<?> testClass;32    public CustomRunner(Class<?> testClass) {33        this.testClass = testClass;34    }35    public Description getDescription() {36        return Description.createSuiteDescription(testClass);37    }38    public void run(RunNotifier notifier) {39        notifier.fireTestRunStarted(getDescription());40        notifier.fireTestStarted(getDescription());41        notifier.fireTestFinished(getDescription());42        notifier.fireTestRunFinished(null);43    }44}45OK (2 tests)

RunnerBuilder

Using AI Code Generation

1import org.junit.runner.RunWith;2import org.junit.runners.Suite;3import org.junit.runners.model.RunnerBuilder;4@RunWith(Suite.class)5@Suite.SuiteClasses({TestJunit1.class, TestJunit2.class})6public class TestSuite {7    public static void main(String[] args) {8        RunnerBuilder runnerBuilder = new RunnerBuilder() {9            public org.junit.runner.Runner runnerForClass(Class<?> testClass) throws Throwable {10                return null;11            }12        };13    }14}

RunnerBuilder

Using AI Code Generation

1import org.junit.runner.Runner;2import org.junit.runners.model.RunnerBuilder;3public class MyRunner extends RunnerBuilder {4    public Runner runnerForClass(Class<?> testClass) throws Throwable {5        return null;6    }7}8public class MyRunner extends RunnerBuilder {9    public Runner runnerForClass(Class<?> testClass) throws Throwable {10        return null;11    }12}

RunnerBuilder

Using AI Code Generation

1import org.junit.runners.model.RunnerBuilder;2import org.junit.runners.model.RunnerScheduler;3public class CustomRunnerBuilder extends RunnerBuilder {4    private final RunnerScheduler scheduler;5    public CustomRunnerBuilder(RunnerScheduler scheduler) {6        this.scheduler = scheduler;7    }8    public Runner runnerForClass(Class<?> testClass) throws Throwable {9        return new CustomRunner(testClass, scheduler);10    }11}12import org.junit.runner.Runner;13import org.junit.runner.notification.RunNotifier;14public class CustomRunner extends Runner {15    private final Class<?> testClass;16    private final RunnerScheduler scheduler;17    public CustomRunner(Class<?> testClass, RunnerScheduler scheduler) {18        this.testClass = testClass;19        this.scheduler = scheduler;20    }21    public Description getDescription() {22        return Description.createSuiteDescription(testClass);23    }24    public void run(RunNotifier notifier) {25        scheduler.schedule(new Runnable() {26            public void run() {27                executeTest();28            }29        });30    }31    private void executeTest() {32        try {33            testClass.newInstance();34        } catch (InstantiationException | IllegalAccessException e) {35            e.printStackTrace();36        }37    }38}39import org.junit.runner.RunnerScheduler;40public class CustomRunnerScheduler implements RunnerScheduler {41    private final int threadCount;42    public CustomRunnerScheduler(int threadCount) {43        this.threadCount = threadCount;44    }45    public void schedule(Runnable childStatement) {46        new Thread(childStatement).start();47    }48    public void finished() {49    }50}51import org.junit.Test;52import org.junit.runner.JUnitCore;53import org.junit.runner.Result;54import org.junit.runner.RunWith;55import org.junit.runners.Suite;56@RunWith(CustomRunner.class)57public class CustomRunnerTest {58    public void test1() {59        System.out.println("test1");60    }61    public void test2() {62        System.out.println("test2");63    }

RunnerBuilder

Using AI Code Generation

1import org.junit.runner.RunWith;2import org.junit.runners.Suite;3import org.junit.runners.model.RunnerBuilder;4@RunWith(Suite.class)5@Suite.SuiteClasses({Test1.class, Test2.class})6public class TestSuite {7    public TestSuite(Class<?> klass, RunnerBuilder builder) throws InitializationError {8        super(klass, builder.runners(klass, getAnnotatedClasses(klass)));9    }10}

RunnerBuilder

Using AI Code Generation

1import org.junit.runners.model.RunnerBuilder;2import org.junit.runners.model.RunnerScheduler;3public class RunnerBuilderExample {4    public static void main(String[] args) {5        RunnerBuilder rb = new RunnerBuilder() {6            public Runner runnerForClass(Class<?> testClass) throws Throwable {7                return null;8            }9        };10        RunnerScheduler rs = new RunnerScheduler() {11            public void schedule(Runnable childStatement) {12                childStatement.run();13            }14            public void finished() {15            }16        };17        rb.runnerForClass(RunnerBuilderExample.class).run(rs);18    }19}20	at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:27)21	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)22	at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:44)23	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)24	at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)25	at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:35)26	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)27	at org.junit.runner.JUnitCore.run(JUnitCore.java:115)28	at org.junit.runner.JUnitCore.run(JUnitCore.java:105)29	at org.junit.runner.JUnitCore.run(JUnitCore.java:94)30	at org.junit.runner.JUnitCore.runMain(JUnitCore.java:78)31	at org.junit.runner.JUnitCore.runMainAndExit(JUnitCore.java:36)32	at org.junit.runner.JUnitCore.main(JUnitCore.java:32)33	at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:27)34	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)35	at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:44)36	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)37	at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)38	at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:35)39	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

RunnerBuilder

Using AI Code Generation

1@RunWith(Suite.class)2@Suite.SuiteClasses({Test1.class, Test2.class})3public class TestSuite {4}5package com.example.junit5;6import org.junit.Test;7import static org.junit.Assert.assertEquals;8public class Test1 {9    public void test1() {10        assertEquals(1, 1);11    }12}13package com.example.junit5;14import org.junit.Test;15import static org.junit.Assert.assertEquals;16public class Test2 {17    public void test1() {18        assertEquals(1, 1);19    }20}21package com.example.junit5;22import org.junit.Test;23import static org.junit.Assert.assertEquals;24public class Test3 {25    public void test1() {26        assertEquals(1, 1);27    }28}29package com.example.junit5;30import org.junit.Test;31import static org.junit.Assert.assertEquals;32public class Test4 {33    public void test1() {34        assertEquals(1, 1);35    }36}37package com.example.junit5;38import org.junit.Test;39import static org.junit.Assert.assertEquals;40public class Test5 {41    public void test1() {42        assertEquals(1, 1);43    }44}45package com.example.junit5;46import org.junit.Test;47import static org.junit.Assert.assertEquals;48public class Test6 {49    public void test1() {50        assertEquals(1, 1);51    }52}53package com.example.junit5;54import org.junit.Test;55import static org.junit.Assert.assertEquals;56public class Test7 {57    public void test1() {58        assertEquals(1, 1);59    }60}61package com.example.junit5;62import org.junit.Test;63import static org.junit.Assert

JUnit Tutorial:

LambdaTest also has a detailed JUnit tutorial explaining its features, importance, advanced use cases, best practices, and more to help you get started with running your automation testing scripts.

JUnit Tutorial Chapters:

Here are the detailed JUnit testing chapters to help you get started:

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.