Examples of org.junit.runners.ParentRunner

org.junit.runners.ParentRunner
Provides most of the functionality specific to a Runner that implements a "parent node" in the test tree, with children defined by objects of some data type {@code T}. (For {@link BlockJUnit4ClassRunner}, {@code T} is{@link Method} . For {@link Suite}, {@code T} is {@link Class}.) Subclasses must implement finding the children of the node, describing each child, and running each child. ParentRunner will filter and sort children, handle {@code @BeforeClass} and {@code @AfterClass} methods,handle annotated {@link ClassRule}s, create a composite {@link Description}, and run children sequentially. @since 4.5


    private CountingRunListener runTestWithParentRunner(Class<?> testClass) throws InitializationError {
        CountingRunListener listener = new CountingRunListener();
        RunNotifier runNotifier = new RunNotifier();
        runNotifier.addListener(listener);
        ParentRunner runner = new BlockJUnit4ClassRunner(testClass);
        runner.run(runNotifier);
        return listener;
    }

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        }


        private void populateChildrenFromSuites() {
            Filter filter = new SuiteFilter();
            for (Iterator<ParentRunner> it = suites.iterator(); it.hasNext();) {
                ParentRunner suite = it.next();
                try {
                    suite.filter(filter);
                } catch (NoTestsRemainException e) {
                    it.remove();
                }
            }
        }

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            int parallelMethods = allGroups.get(Type.METHODS);
            int poolSize = totalPoolSize();
            ExecutorService commonPool = splitPool || poolSize == 0 ? null : createPool(poolSize);
            master = createMaster(commonPool, poolSize);


            ParentRunner suiteSuites = wrapRunners( suites );
            if ( suiteSuites != null )
            {
                // a scheduler for parallel suites
                if ( commonPool != null && parallelSuites > 0 )
                {
                    Balancer balancer = BalancerFactory.createBalancerWithFairness( parallelSuites );
                    suiteSuites.setScheduler( createScheduler( null, commonPool, true, balancer ) );
                }
                else
                {
                    suiteSuites.setScheduler( createScheduler( parallelSuites ) );
                }
            }


            // schedulers for parallel classes
            ParentRunner suiteClasses = wrapRunners( classes );
            ArrayList<ParentRunner> allSuites = new ArrayList<ParentRunner>( suites );
            allSuites.addAll( nestedSuites );
            if ( suiteClasses != null )
            {
                allSuites.add( suiteClasses );
            }
            if ( !allSuites.isEmpty() )
            {
                setSchedulers( allSuites, parallelClasses, commonPool );
            }


            // schedulers for parallel methods
            ArrayList<ParentRunner> allClasses = new ArrayList<ParentRunner>( classes );
            allClasses.addAll( nestedClasses );
            if ( !allClasses.isEmpty() )
            {
                setSchedulers( allClasses, parallelMethods, commonPool );
            }


            // resulting runner for Computer#getSuite() scheduled by master scheduler
            ParentRunner all = createFinalRunner( suiteSuites, suiteClasses );
            all.setScheduler( master );
            return all;
        }

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        {
            // Do NOT use allGroups here.
            Filter filter = new SuiteFilter();
            for ( Iterator<ParentRunner> it = suites.iterator(); it.hasNext(); )
            {
                ParentRunner suite = it.next();
                try
                {
                    suite.filter( filter );
                }
                catch ( NoTestsRemainException e )
                {
                    it.remove();
                }

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            {
                setSchedulers( allClasses, parallelMethods, commonPool );
            }


            // resulting runner for Computer#getSuite() scheduled by master scheduler
            ParentRunner all = createFinalRunner( suiteSuites, suiteClasses );
            all.setScheduler( master );
            return all;
        }

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                {
                    nestedSuites.add( (Suite) child );
                }
                else if ( child instanceof ParentRunner )
                {
                    ParentRunner parentRunner = (ParentRunner) child;
                    nestedClasses.add( parentRunner );
                    nestedClassesChildren += parentRunner.getDescription().getChildren().size();
                }
            }

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        {
            // Do NOT use allGroups here.
            Filter filter = new SuiteFilter();
            for ( Iterator<ParentRunner> it = suites.iterator(); it.hasNext(); )
            {
                ParentRunner suite = it.next();
                try
                {
                    suite.filter( filter );
                }
                catch ( NoTestsRemainException e )
                {
                    it.remove();
                }

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            {
                setSchedulers( allClasses, parallelMethods, commonPool );
            }


            // resulting runner for Computer#getSuite() scheduled by master scheduler
            ParentRunner all = createFinalRunner( removeNullRunners(
                Arrays.<Runner>asList( suiteSuites, suiteClasses, createSuite( notParallelRunners ) )
            ) );
            all.setScheduler( master );
            return all;
        }

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                throws NoTestsRemainException
            {
                super.apply( child );
                if ( child instanceof ParentRunner )
                {
                    ParentRunner runner = ( ParentRunner ) child;
                    if ( !isThreadSafe( runner ) )
                    {
                        runner.setScheduler( notThreadSafeTests.newRunnerScheduler() );
                    }
                    else if ( child instanceof Suite )
                    {
                        nestedSuites.add( (Suite) child );
                    }
                    else
                    {
                        ParentRunner parentRunner = (ParentRunner) child;
                        nestedClasses.add( parentRunner );
                        nestedClassesChildren += parentRunner.getDescription().getChildren().size();
                    }
                }
            }

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Related Classes of org.junit.runners.ParentRunner

org.apache.maven.surefire.junitcore.pc.ParallelComputerBuilder$PC

org.apache.maven.surefire.junitcore.pc.ParallelComputerBuilder$PC$SuiteFilter

org.junit.internal.runners.model.EachTestNotifier

org.junit.internal.runners.statements.RunAfters

org.junit.internal.runners.statements.RunBefores

org.junit.rules.RunRules

org.junit.runner.Description

org.junit.runners.model.InitializationError

org.junit.runners.model.RunnerScheduler

org.junit.runners.model.Statement

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