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How to use childrenInvoker method of org.junit.runners.ParentRunner class

Best junit code snippet using org.junit.runners.ParentRunner.childrenInvoker

Source:ParentRunner.java

...113        List<TestRule> classRules = classRules();114        return classRules.isEmpty() ? statement : new RunRules(statement, classRules, getDescription());115    }116    /* access modifiers changed from: protected */117    public Statement childrenInvoker(final RunNotifier runNotifier) {118        return new Statement() {119            public void evaluate() {120                ParentRunner.this.runChildren(runNotifier);121            }122        };123    }124    /* access modifiers changed from: protected */125    public Statement classBlock(RunNotifier runNotifier) {126        Statement childrenInvoker = childrenInvoker(runNotifier);127        return !areAllChildrenIgnored() ? withClassRules(withAfterClasses(withBeforeClasses(childrenInvoker))) : childrenInvoker;128    }129    /* access modifiers changed from: protected */130    public List<TestRule> classRules() {131        List<TestRule> annotatedMethodValues = this.testClass.getAnnotatedMethodValues((Object) null, ClassRule.class, TestRule.class);132        annotatedMethodValues.addAll(this.testClass.getAnnotatedFieldValues((Object) null, ClassRule.class, TestRule.class));133        return annotatedMethodValues;134    }135    /* access modifiers changed from: protected */136    public void collectInitializationErrors(List<Throwable> list) {137        validatePublicVoidNoArgMethods(BeforeClass.class, true, list);138        validatePublicVoidNoArgMethods(AfterClass.class, true, list);139        validateClassRules(list);140        applyValidators(list);141    }...

Source:Cucumber.java

...159    protected void runChild(ParentRunner<?> child, RunNotifier notifier) {160        child.run(notifier);161    }162    @Override163    protected Statement childrenInvoker(RunNotifier notifier) {164        Statement runFeatures = super.childrenInvoker(notifier);165        return new RunCucumber(runFeatures);166    }167    @Override168    public void setScheduler(RunnerScheduler scheduler) {169        super.setScheduler(scheduler);170        multiThreadingAssumed = true;171    }172    class RunCucumber extends Statement {173        private final Statement runFeatures;174        RunCucumber(Statement runFeatures) {175            this.runFeatures = runFeatures;176        }177        @Override178        public void evaluate() throws Throwable {...

Source:ParallelProxyRunner.java

...77     * filter and sort).78     *79     * @param notifier the notifier80     * @return the statement81     * @see org.junit.runners.ParentRunner#childrenInvoker(RunNotifier)82     */83    @Override84    protected Statement childrenInvoker(final RunNotifier notifier) {85        if (!Environment.areThreadsAllowed()) {86            return super.childrenInvoker(notifier);87        }88        return new Statement() {89            @Override90            public void evaluate() {91                runChildren(notifier);92            }93        };94    }95    /**96     * The tests are started parallel and recorded at the beginning. Later in97     * runChild(..) only the recorded result will be returned.98     *99     * @param notifier the RunNotifier100     */...

Source:SeleniumCustomCucumber.java

...77    }78    protected void runChild(FeatureRunner child, RunNotifier notifier) {79        child.run(notifier);80    }81    protected Statement childrenInvoker(RunNotifier notifier) {82        Statement runFeatures = super.childrenInvoker(notifier);83        return new SeleniumCustomCucumber.RunCucumber(runFeatures);84    }85    public void setScheduler(RunnerScheduler scheduler) {86        super.setScheduler(scheduler);87        this.multiThreadingAssumed = true;88    }89    class RunCucumber extends Statement {90        private final Statement runFeatures;91        RunCucumber(Statement runFeatures) {92            this.runFeatures = runFeatures;93        }94        public void evaluate() throws Throwable {95            if (SeleniumCustomCucumber.this.multiThreadingAssumed) {96                SeleniumCustomCucumber.this.plugins.setSerialEventBusOnEventListenerPlugins(SeleniumCustomCucumber.this.bus);...

Source:ExperimentRunner.java

...25 * call the appropriate test methods during and after the layout algorithm's execution. The actual experiment execution26 * works as follows:27 * 28 * <ol>29 * <li>{@link ParentRunner} calls {@link #childrenInvoker(RunNotifier)} to have us generate a {@link Statement} that30 * runs all of the tests. The statement is in charge of executing the layout tests.</li>31 * <li>A {@link ExperimentStatement} is then used to run the actual tests.</li>32 * </ol>33 * 34 * For more details, see the documentation of {@link ExperimentStatement}. These complications are mainly due to the35 * fact that our whitebox tests are not executed the way usual test methods are.36 */37final class ExperimentRunner extends ParentRunner<FrameworkMethod> {38    /** ID of the next {@link ExperimentRunner} to be created. */39    private static int nextRunnerId = 0;40    /** ID of this runner, used to disambiguate descriptions of test methods. */41    private int runnerId;42    /** The runner that created us. We'll use that to enumerate our tests. */43    private final LayoutTestRunner parentRunner;44    /** The experimental object we'll be performing tests on. */45    private final ExperimentalObject experimentalObject;46    /** Descriptions for our test methods. */47    private Map<FrameworkMethod, Description> testDescriptions = new HashMap<>();48    /**49     * Creates a new test runner that will perform tests on the given experimental object.50     * 51     * @throws InitializationError52     *             this shouldn't happen since any initialization problems should already have been caught by53     *             {@link LayoutTestRunner}.54     */55    ExperimentRunner(final LayoutTestRunner parentRunner, final ExperimentalObject experimentalObject)56            throws InitializationError {57        super(parentRunner.getTestClass().getJavaClass());58        this.runnerId = ++nextRunnerId;59        this.parentRunner = parentRunner;60        this.experimentalObject = experimentalObject;61        // Our parent makes all tests available to use. Now we just have to create descriptions for them62        Stream.concat(parentRunner.getBlackboxTests().stream(), parentRunner.getWhiteboxTests().stream())63                .forEach(test -> describeChild(test));64    }65    ///////////////////////////////////////////////////////////////////////////////////////////////66    // Getters67    /**68     * Returns the {@link LayoutTestRunner} that created us.69     */70    public LayoutTestRunner getParentRunner() {71        return parentRunner;72    }73    74    /**75     * Returns the experimental object for this runner.76     */77    public ExperimentalObject getExperimentalObject() {78        return experimentalObject;79    }80    ///////////////////////////////////////////////////////////////////////////////////////////////81    // ParentRunner82    83    @Override84    protected String getName() {85        return experimentalObject.toString();86    }87    @Override88    protected boolean isIgnored(final FrameworkMethod child) {89        return child.getAnnotation(Ignore.class) != null;90    }91    @Override92    protected List<FrameworkMethod> getChildren() {93        return new ArrayList<>(testDescriptions.keySet());94    }95    @Override96    protected Description describeChild(final FrameworkMethod child) {97        if (!testDescriptions.containsKey(child)) {98            // Since other experiment runners will build descriptions for the same methods that we build descriptions99            // for, we need to disambiguate them.100            Description childDescription = Description.createTestDescription(getTestClass().getJavaClass(),101                    child.getName() + " (" + runnerId + ")", child.getAnnotations());102            testDescriptions.put(child, childDescription);103        }104        return testDescriptions.get(child);105    }106    @Override107    protected Statement childrenInvoker(final RunNotifier notifier) {108        // Instead of invoking our children directly, we use this statement to run tests109        return new ExperimentStatement(this, notifier);110    }111    @Override112    protected void runChild(final FrameworkMethod child, final RunNotifier notifier) {113        // We don't do anything here because this method is not called due to the way our implementation works114    }115    /**116     * Calls {@link #runLeaf(Statement, Description, RunNotifier)}, whose visibility cannot be changed to public.117     */118    void doRunLeaf(final Statement statement, final Description description, final RunNotifier notifier) {119        runLeaf(statement, description, notifier);120    }121}...

Source:NeodymiumCucumberWrapper.java

...33    {34        cucumber.runChild(child, notifier);35    }36    @Override37    protected Statement childrenInvoker(RunNotifier notifier)38    {39        return cucumber.childrenInvoker(notifier);40    }41    @Override42    public void setScheduler(RunnerScheduler scheduler)43    {44        cucumber.setScheduler(scheduler);45    }46    // from ParentsRunner47    @Override48    public void run(RunNotifier notifier)49    {50        cucumber.run(notifier);51    }52    @Override53    public void filter(Filter filter) throws NoTestsRemainException...

Source:Pump.java

...27    protected void runChild(ParentRunner<?> child, RunNotifier notifier) {28        cucumberDelegate.runChild(child, notifier);29    }30    @Override31    protected Statement childrenInvoker(RunNotifier notifier) {32        return cucumberDelegate.childrenInvoker(notifier);33    }34}...

childrenInvoker

Using AI Code Generation

1import org.junit.runner.RunWith;2import org.junit.runners.Suite;3import org.junit.runners.Suite.SuiteClasses;4@RunWith(Suite.class)5@SuiteClasses({Test1.class, Test2.class})6public class SuiteTest {7}8import org.junit.Test;9public class Test1 {10    public void test1() {11        System.out.println("Test1.test1");12    }13}14import org.junit.Test;15public class Test2 {16    public void test2() {17        System.out.println("Test2.test2");18    }19}

childrenInvoker

Using AI Code Generation

1public class JunitTest {2    public void test() throws Exception {3        JUnitCore core = new JUnitCore();4        core.addListener(new RunListener() {5            public void testRunStarted(Description description) throws Exception {6                super.testRunStarted(description);7                System.out.println("testRunStarted");8            }9            public void testRunFinished(Result result) throws Exception {10                super.testRunFinished(result);11                System.out.println("testRunFinished");12            }13            public void testStarted(Description description) throws Exception {14                super.testStarted(description);15                System.out.println("testStarted");16            }17            public void testFinished(Description description) throws Exception {18                super.testFinished(description);19                System.out.println("testFinished");20            }21            public void testFailure(Failure failure) throws Exception {22                super.testFailure(failure);23                System.out.println("testFailure");24            }25            public void testAssumptionFailure(Failure failure) {26                super.testAssumptionFailure(failure);27                System.out.println("testAssumptionFailure");28            }29            public void testIgnored(Description description) throws Exception {30                super.testIgnored(description);31                System.out.println("testIgnored");32            }33        });34        core.run(JunitTest.class);35    }36    public void test1() {37        System.out.println("test1");38    }39    public void test2() {40        System.out.println("test2");41    }42}43In the above code, the JUnitCore class is used to run the JunitTest class. The JUnitCore class is used to run JUnit tests. It can run a single test method or an entire class. It can also run tests from a JUnit 4 suite. The JUnitCore class can be used programmatically or from the command line. The JUnitCore class has a run()

childrenInvoker

Using AI Code Generation

1import org.junit.runner.Description;2import org.junit.runner.notification.RunNotifier;3import org.junit.runners.model.InitializationError;4import org.junit.runners.ParentRunner;5import org.junit.runners.model.FrameworkMethod;6public class TestRunner extends ParentRunner<FrameworkMethod> {7    public TestRunner(Class<?> clazz) throws InitializationError {8        super(clazz);9    }10    protected Description describeChild(FrameworkMethod child) {11        return Description.createTestDescription(getTestClass().getJavaClass(), child.getName());12    }13    protected void runChild(FrameworkMethod child, RunNotifier notifier) {14        childBlock(notifier, describeChild(child), () -> {15            try {16                child.invokeExplosively(null);17            } catch (Throwable e) {18                addFailure(notifier, e);19            }20        });21    }22    private void childBlock(RunNotifier notifier, Description description, Runnable r) {23        notifier.fireTestStarted(description);24        try {25            r.run();26        } finally {27            notifier.fireTestFinished(description);28        }29    }30    private void addFailure(RunNotifier notifier, Throwable e) {31        notifier.fireTestFailure(new org.junit.runner.notification.Failure(getDescription(), e));32    }33    protected List<FrameworkMethod> getChildren() {34        return getTestClass().getAnnotatedMethods(Test.class);35    }36}37OK (1 test)

childrenInvoker

Using AI Code Generation

1import org.junit.runners.ParentRunner;2import org.junit.runners.model.InitializationError;3import org.junit.runners.model.RunnerBuilder;4import org.junit.runners.model.TestClass;5import java.util.List;6public class MyRunner extends ParentRunner {7    public MyRunner(Class<?> testClass) throws InitializationError {8        super(testClass);9    }10    protected MyRunner(Class<?> testClass, RunnerBuilder builder) throws InitializationError {11        super(testClass, builder);12    }13    protected List getChildren() {14        return super.getChildren();15    }16    public static void main(String[] args) throws InitializationError {17        MyRunner myRunner = new MyRunner(MyTest.class);18        List children = myRunner.getChildren();19        System.out.println(children);20    }21}

JUnit Tutorial:

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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.