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How to use safeRunnerForClass method of org.junit.runners.model.RunnerBuilder class

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

Source:ConcurrentSuite.java

...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);57            Queue<Future<Void>> tasks = new LinkedList<Future<Void>>();...

Source:ParallelSuite.java

...43							junit4Builder()44					);45					46					for (RunnerBuilder each : builders) {47						Runner runner = each.safeRunnerForClass(testClass);48						if (runner != null) {49							return runner;50						}51					}52					53					return null;54				}55			});56			57			setScheduler(new RunnerScheduler() {58				ExecutorService executorService = Executors.newFixedThreadPool(59						clazz.isAnnotationPresent(Parallel.class) ?60								clazz.getAnnotation(Parallel.class).threads() :61								(int) (Runtime.getRuntime().availableProcessors() * 1.5),...

Source:EunitSuiteRunner.java

...69            }70         }71      }72      @Override73      public Runner safeRunnerForClass(Class<?> testClass) {74         return m_builder.safeRunnerForClass(testClass);75      }76   }77}...

Source:RunnerBuilder.java

...53/*     */ 54/*     */ 55/*     */ 56/*     */   57/*     */   public Runner safeRunnerForClass(Class<?> testClass) {58/*     */     try {59/*  59 */       return runnerForClass(testClass);60/*  60 */     } catch (Throwable e) {61/*  61 */       return (Runner)new ErrorReportingRunner(testClass, e);62/*     */     } 63/*     */   }64/*     */   65/*     */   Class<?> addParent(Class<?> parent) throws InitializationError {66/*  66 */     if (!this.parents.add(parent)) {67/*  67 */       throw new InitializationError(String.format("class '%s' (possibly indirectly) contains itself as a SuiteClass", new Object[] { parent.getName() }));68/*     */     }69/*  69 */     return parent;70/*     */   }71/*     */   72/*     */   void removeParent(Class<?> klass) {73/*  73 */     this.parents.remove(klass);74/*     */   }75/*     */ 76/*     */ 77/*     */ 78/*     */ 79/*     */ 80/*     */ 81/*     */ 82/*     */   83/*     */   public List<Runner> runners(Class<?> parent, Class<?>[] children) throws InitializationError {84/*  84 */     addParent(parent);85/*     */     86/*     */     try {87/*  87 */       return runners(children);88/*     */     } finally {89/*  89 */       removeParent(parent);90/*     */     } 91/*     */   }92/*     */ 93/*     */   94/*     */   public List<Runner> runners(Class<?> parent, List<Class<?>> children) throws InitializationError {95/*  95 */     return runners(parent, (Class[])children.<Class<?>[]>toArray((Class<?>[][])new Class[0]));96/*     */   }97/*     */   98/*     */   private List<Runner> runners(Class<?>[] children) {99/*  99 */     ArrayList<Runner> runners = new ArrayList<Runner>();100/* 100 */     for (Class<?> each : children) {101/* 101 */       Runner childRunner = safeRunnerForClass(each);102/* 102 */       if (childRunner != null) {103/* 103 */         runners.add(childRunner);104/*     */       }105/*     */     } 106/* 106 */     return runners;107/*     */   }108/*     */ }109/* Location:              /home/arpit/Downloads/Picking-Tool-6.5.2.jar!/org/junit/runners/model/RunnerBuilder.class110 * Java compiler version: 5 (49.0)111 * JD-Core Version:       1.1.3112 */...

Source:ConcurrentSuiteRunner.java

...42                    suiteMethodBuilder(),43                    junit3Builder(),44                    junit4Builder());45                for (RunnerBuilder each : builders) {46                    Runner runner = each.safeRunnerForClass(testClass);47                    if (runner != null)48                        return runner;49                }50                return null;51            }52        });53        int nThreads = 0;54        if (klass.isAnnotationPresent(Concurrent.class))55            nThreads = Math.max(0, klass.getAnnotation(Concurrent.class).value());56        if (nThreads == 0) {57            SuiteClasses suiteClasses = klass.getAnnotation(SuiteClasses.class);58            nThreads = suiteClasses != null && suiteClasses.value().length > 0 ? suiteClasses.value().length : Runtime.getRuntime().availableProcessors();59        }60        setScheduler(new ConcurrentRunnerScheduler(klass.getSimpleName(), nThreads));...

Source:Snippet.java

...18//		at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)19//		at java.lang.reflect.Constructor.newInstance(Unknown Source)20//		at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)21//		at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)22//		at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)23//		at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)24//		at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)25//		at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)26//		at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.<init>(JUnit4TestReference.java:33)27//		at org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.<init>(JUnit4TestClassReference.java:25)28//		at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:48)29//		at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:38)30//		at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)31//		at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)32//		at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)33//		at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)34//	35//	36//}37//

Source:AllDefaultPossibilitiesBuilder.java

...23    public JUnit4Builder junit4Builder() {24        return new JUnit4Builder();25    }26    public Runner runnerForClass(Class<?> cls) {27        for (RunnerBuilder safeRunnerForClass : Arrays.asList(new RunnerBuilder[]{ignoredBuilder(), annotatedBuilder(), suiteMethodBuilder(), junit3Builder(), junit4Builder()})) {28            Runner safeRunnerForClass2 = safeRunnerForClass.safeRunnerForClass(cls);29            if (safeRunnerForClass2 != null) {30                return safeRunnerForClass2;31            }32        }33        return null;34    }35    /* access modifiers changed from: protected */36    public RunnerBuilder suiteMethodBuilder() {37        return this.canUseSuiteMethod ? new SuiteMethodBuilder() : new NullBuilder();38    }39}...

Source:AllJUnitRunnerBuilder.java

...24        runnerBuilders.add(junit4Builder());25        26        for(RunnerBuilder runnerBuilder : runnerBuilders)27        {28            Runner runner = runnerBuilder.safeRunnerForClass(testClass);29            30            if(runner != null)31            {32                return runner;33            }34        }35        36        return null;37    }38}...

safeRunnerForClass

Using AI Code Generation

1import org.junit.runner.Runner;2import org.junit.runners.BlockJUnit4ClassRunner;3import org.junit.runners.model.RunnerBuilder;4public class CustomRunner extends RunnerBuilder {5    public Runner safeRunnerForClass(Class<?> testClass) throws Throwable {6        return new BlockJUnit4ClassRunner(testClass);7    }8}9import org.junit.runner.RunWith;10import org.junit.runners.Suite;11@RunWith(CustomRunner.class)12@Suite.SuiteClasses({TestOne.class, TestTwo.class})13public class TestSuite {14}15import org.junit.Test;16public class TestOne {17    public void testOne() {18        System.out.println("testOne");19    }20}21import org.junit.Test;22public class TestTwo {23    public void testTwo() {24        System.out.println("testTwo");25    }26}27import org.junit.runner.JUnitCore;28import org.junit.runner.Result;29public class RunnerTest {30    public static void main(String[] args) {31        Result result = JUnitCore.runClasses(TestSuite.class);32        System.out.println("Result: " + result.wasSuccessful());33    }34}

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.