How to use isEmpty method of org.junit.runner.Description class

Best junit code snippet using org.junit.runner.Description.isEmpty

Source:ParentRunner.java

...105    }106    /* access modifiers changed from: protected */107    public Statement withBeforeClasses(Statement statement) {108        List<FrameworkMethod> befores = this.testClass.getAnnotatedMethods(BeforeClass.class);109        if (befores.isEmpty()) {110            return statement;111        }112        return new RunBefores(statement, befores, null);113    }114    /* access modifiers changed from: protected */115    public Statement withAfterClasses(Statement statement) {116        List<FrameworkMethod> afters = this.testClass.getAnnotatedMethods(AfterClass.class);117        if (afters.isEmpty()) {118            return statement;119        }120        return new RunAfters(statement, afters, null);121    }122    private Statement withClassRules(Statement statement) {123        List<TestRule> classRules = classRules();124        if (classRules.isEmpty()) {125            return statement;126        }127        return new RunRules(statement, classRules, getDescription());128    }129    /* access modifiers changed from: protected */130    public List<TestRule> classRules() {131        List<TestRule> result = this.testClass.getAnnotatedMethodValues(null, ClassRule.class, TestRule.class);132        result.addAll(this.testClass.getAnnotatedFieldValues(null, ClassRule.class, TestRule.class));133        return result;134    }135    /* access modifiers changed from: protected */136    public Statement childrenInvoker(final RunNotifier notifier) {137        return new Statement() {138            /* class org.junit.runners.ParentRunner.AnonymousClass2 */139            @Override // org.junit.runners.model.Statement140            public void evaluate() {141                ParentRunner.this.runChildren(notifier);142            }143        };144    }145    /* access modifiers changed from: protected */146    public boolean isIgnored(T t) {147        return false;148    }149    /* access modifiers changed from: private */150    public void runChildren(final RunNotifier notifier) {151        RunnerScheduler currentScheduler = this.scheduler;152        try {153            for (final T each : getFilteredChildren()) {154                currentScheduler.schedule(new Runnable() {155                    /* class org.junit.runners.ParentRunner.AnonymousClass3 */156                    public void run() {157                        ParentRunner.this.runChild(each, notifier);158                    }159                });160            }161        } finally {162            currentScheduler.finished();163        }164    }165    /* access modifiers changed from: protected */166    public String getName() {167        return this.testClass.getName();168    }169    public final TestClass getTestClass() {170        return this.testClass;171    }172    /* access modifiers changed from: protected */173    public final void runLeaf(Statement statement, Description description, RunNotifier notifier) {174        EachTestNotifier eachNotifier = new EachTestNotifier(notifier, description);175        eachNotifier.fireTestStarted();176        try {177            statement.evaluate();178        } catch (AssumptionViolatedException e) {179            eachNotifier.addFailedAssumption(e);180        } catch (Throwable th) {181            eachNotifier.fireTestFinished();182            throw th;183        }184        eachNotifier.fireTestFinished();185    }186    /* access modifiers changed from: protected */187    public Annotation[] getRunnerAnnotations() {188        return this.testClass.getAnnotations();189    }190    @Override // org.junit.runner.Describable, org.junit.runner.Runner191    public Description getDescription() {192        Description description = Description.createSuiteDescription(getName(), getRunnerAnnotations());193        for (T child : getFilteredChildren()) {194            description.addChild(describeChild(child));195        }196        return description;197    }198    @Override // org.junit.runner.Runner199    public void run(RunNotifier notifier) {200        EachTestNotifier testNotifier = new EachTestNotifier(notifier, getDescription());201        try {202            classBlock(notifier).evaluate();203        } catch (AssumptionViolatedException e) {204            testNotifier.addFailedAssumption(e);205        } catch (StoppedByUserException e2) {206            throw e2;207        } catch (Throwable e3) {208            testNotifier.addFailure(e3);209        }210    }211    @Override // org.junit.runner.manipulation.Filterable212    public void filter(Filter filter) throws NoTestsRemainException {213        synchronized (this.childrenLock) {214            List<T> children = new ArrayList<>(getFilteredChildren());215            Iterator<T> iter = children.iterator();216            while (iter.hasNext()) {217                T each = iter.next();218                if (shouldRun(filter, each)) {219                    try {220                        filter.apply(each);221                    } catch (NoTestsRemainException e) {222                        iter.remove();223                    }224                } else {225                    iter.remove();226                }227            }228            this.filteredChildren = Collections.unmodifiableCollection(children);229            if (this.filteredChildren.isEmpty()) {230                throw new NoTestsRemainException();231            }232        }233    }234    @Override // org.junit.runner.manipulation.Sortable235    public void sort(Sorter sorter) {236        synchronized (this.childrenLock) {237            for (T each : getFilteredChildren()) {238                sorter.apply(each);239            }240            List<T> sortedChildren = new ArrayList<>(getFilteredChildren());241            Collections.sort(sortedChildren, comparator(sorter));242            this.filteredChildren = Collections.unmodifiableCollection(sortedChildren);243        }244    }245    private void validate() throws InitializationError {246        List<Throwable> errors = new ArrayList<>();247        collectInitializationErrors(errors);248        if (!errors.isEmpty()) {249            throw new InitializationError(errors);250        }251    }252    private Collection<T> getFilteredChildren() {253        if (this.filteredChildren == null) {254            synchronized (this.childrenLock) {255                if (this.filteredChildren == null) {256                    this.filteredChildren = Collections.unmodifiableCollection(getChildren());257                }258            }259        }260        return this.filteredChildren;261    }262    private boolean shouldRun(Filter filter, T each) {...

Source:JUnitTestClassExecutor.java

...65            filters.add(new CategoryFilter(options.getIncludeCategories(), options.getExcludeCategories(), applicationClassLoader));66        }67        Request request = Request.aClass(testClass);68        Runner runner = request.getRunner();69        if (!options.getIncludedTests().isEmpty()70            || !options.getIncludedTestsCommandLine().isEmpty()71            || !options.getExcludedTests().isEmpty()) {72            TestSelectionMatcher matcher = new TestSelectionMatcher(73                options.getIncludedTests(), options.getExcludedTests(),74                options.getIncludedTestsCommandLine());75            // For test suites (including suite-like custom Runners), if the test suite class76            // matches the filter, run the entire suite instead of filtering away its contents.77            if (!runner.getDescription().isSuite() || !matcher.matchesTest(testClassName, null)) {78                filters.add(new MethodNameFilter(matcher));79            }80        }81        if (runner instanceof Filterable) {82            Filterable filterable = (Filterable) runner;83            for (Filter filter : filters) {84                try {85                    filterable.filter(filter);86                } catch (NoTestsRemainException e) {87                    // Ignore88                    return;89                }90            }91        } else if (allTestsFiltered(runner, filters)) {92            return;93        }94        RunNotifier notifier = new RunNotifier();95        notifier.addListener(listener);96        runner.run(notifier);97    }98    // https://github.com/gradle/gradle/issues/231999    public static boolean isNestedClassInsideEnclosedRunner(Class<?> testClass) {100        if (testClass.getEnclosingClass() == null) {101            return false;102        }103        Class<?> outermostClass = testClass;104        while (outermostClass.getEnclosingClass() != null) {105            outermostClass = outermostClass.getEnclosingClass();106        }107        RunWith runWith = outermostClass.getAnnotation(RunWith.class);108        return runWith != null && Enclosed.class.equals(runWith.value());109    }110    private void verifyJUnitCategorySupport() {111        try {112            applicationClassLoader.loadClass("org.junit.experimental.categories.Category");113        } catch (ClassNotFoundException e) {114            throw new GradleException("JUnit Categories defined but declared JUnit version does not support Categories.");115        }116    }117    private boolean allTestsFiltered(Runner runner, List<Filter> filters) {118        LinkedList<Description> queue = new LinkedList<Description>();119        queue.add(runner.getDescription());120        while (!queue.isEmpty()) {121            Description description = queue.removeFirst();122            queue.addAll(description.getChildren());123            boolean run = true;124            for (Filter filter : filters) {125                if (!filter.shouldRun(description)) {126                    run = false;127                    break;128                }129            }130            if (run) {131                return false;132            }133        }134        return true;...

Source:JUnitTestClassExecuter.java

...73            ));74        }75        Request request = Request.aClass(testClass);76        Runner runner = request.getRunner();77        if (!options.getIncludedTests().isEmpty() || !options.getIncludedTestsCommandLine().isEmpty()) {78            TestSelectionMatcher matcher = new TestSelectionMatcher(options.getIncludedTests(), options.getIncludedTestsCommandLine());79            // For test suites (including suite-like custom Runners), if the test suite class80            // matches the filter, run the entire suite instead of filtering away its contents.81            if (!runner.getDescription().isSuite() || !matcher.matchesTest(testClassName, null)) {82                filters.add(new MethodNameFilter(matcher));83            }84        }85        if (runner instanceof Filterable) {86            Filterable filterable = (Filterable) runner;87            for (Filter filter : filters) {88                try {89                    filterable.filter(filter);90                } catch (NoTestsRemainException e) {91                    // Ignore92                    return;93                }94            }95        } else if (allTestsFiltered(runner, filters)) {96            return;97        }98        RunNotifier notifier = new RunNotifier();99        notifier.addListener(listener);100        runner.run(notifier);101    }102    private void verifyJUnitCategorySupport() {103        try {104            applicationClassLoader.loadClass("org.junit.experimental.categories.Category");105        } catch (ClassNotFoundException e) {106            throw new GradleException("JUnit Categories defined but declared JUnit version does not support Categories.");107        }108    }109    private boolean allTestsFiltered(Runner runner, List<Filter> filters) {110        LinkedList<Description> queue = new LinkedList<Description>();111        queue.add(runner.getDescription());112        while (!queue.isEmpty()) {113            Description description = queue.removeFirst();114            queue.addAll(description.getChildren());115            boolean run = true;116            for (Filter filter : filters) {117                if (!filter.shouldRun(description)) {118                    run = false;119                    break;120                }121            }122            if (run) {123                return false;124            }125        }126        return true;...

Source:TestClassMethodsRunner.java

...28	}29	30	@Override31	public void run(RunNotifier notifier) {32		if (fTestMethods.isEmpty())33			notifier.testAborted(getDescription(), new Exception("No runnable methods"));34		for (Method method : fTestMethods)35			invokeTestMethod(method, notifier);36	}3738	@Override39	public Description getDescription() {40		Description spec= Description.createSuiteDescription(getName());41		List<Method> testMethods= fTestMethods;42		for (Method method : testMethods)43				spec.addChild(methodDescription(method));44		return spec;45	}4647	protected String getName() {48		return getTestClass().getName();49	}50	51	protected Object createTest() throws Exception {52		return getTestClass().getConstructor().newInstance();53	}5455	protected void invokeTestMethod(Method method, RunNotifier notifier) {56		Object test;57		try {58			test= createTest();59		} catch (InvocationTargetException e) {60			notifier.testAborted(methodDescription(method), e.getCause());61			return;			62		} catch (Exception e) {63			notifier.testAborted(methodDescription(method), e);64			return;65		}66		createMethodRunner(test, method, notifier).run();67	}6869	protected TestMethodRunner createMethodRunner(Object test, Method method, RunNotifier notifier) {70		return new TestMethodRunner(test, method, notifier, methodDescription(method));71	}7273	protected String testName(Method method) {74		return method.getName();75	}7677	protected Description methodDescription(Method method) {78		return Description.createTestDescription(getTestClass(), testName(method));79	}8081	public void filter(Filter filter) throws NoTestsRemainException {82		for (Iterator<Method> iter= fTestMethods.iterator(); iter.hasNext();) {83			Method method= iter.next();84			if (!filter.shouldRun(methodDescription(method)))85				iter.remove();86		}87		if (fTestMethods.isEmpty())88			throw new NoTestsRemainException();89	}9091	public void sort(final Sorter sorter) {92		Collections.sort(fTestMethods, new Comparator<Method>() {93			public int compare(Method o1, Method o2) {94				return sorter.compare(methodDescription(o1), methodDescription(o2));95			}96		});97	}9899	protected Class<?> getTestClass() {100		return fTestClass;101	}
...

Source:JUnit4TestAdapter.java

...46        }47        Description result = description.childlessCopy();48        for (Description each : description.getChildren()) {49            Description child = removeIgnored(each);50            if (!child.isEmpty()) {51                result.addChild(child);52            }53        }54        return result;55    }56    private boolean isIgnored(Description description) {57        return description.getAnnotation(Ignore.class) != null;58    }59    @Override60    public String toString() {61        return fNewTestClass.getName();62    }63    public void filter(Filter filter) throws NoTestsRemainException {64        filter.apply(fRunner);...

Source:NonExecutingRunner.java

...24        filter.apply(this.runner);25    }26    private void generateListOfTests(RunNotifier runNotifier, Description description) {27        List<Description> children = description.getChildren();28        if (children.isEmpty()) {29            runNotifier.fireTestStarted(description);30            runNotifier.fireTestFinished(description);31            return;32        }33        for (Description child : children) {34            generateListOfTests(runNotifier, child);35        }36    }37}...

isEmpty

Using AI Code Generation

1import org.junit.runner.Description;2import org.junit.runner.RunWith;3import org.junit.runners.Parameterized;4import org.junit.runners.Parameterized.Parameters;5import java.util.Arrays;6import java.util.Collection;7import static org.junit.Assert.*;8@RunWith(Parameterized.class)9public class ParameterizedTest {10    private String input;11    private String expected;12    public ParameterizedTest(String input, String expected) {13        this.input = input;14        this.expected = expected;15    }16    public static Collection<Object[]> data() {17        return Arrays.asList(new Object[][]{18                {"", "empty string"},19                {" ", "space"},20                {"  ", "two spaces"},21                {"a", "a"},22                {"ab", "ab"},23                {"abc", "abc"}24        });25    }26    public void test() {27        Description description = Description.createTestDescription(this.getClass(), input);28        assertEquals("Description should be " + expected, expected, description.getDisplayName());29    }30}31Example 2: Using isEmpty() method of org.junit.runner.Description class to check whether the description is empty or not32package com.javaguides.junit5;33import static org.junit.jupiter.api.Assertions.assertFalse;34import static org.junit.jupiter.api.Assertions.assertTrue;35import org.junit.jupiter.api.Test;36import org.junit.runner.Description;37public class DescriptionIsEmptyMethodExample {38    public void testIsEmptyMethod() {39        Description description = Description.createSuiteDescription("Suite");40        assertFalse(description.isEmpty(), "Description is not empty");41        Description description1 = Description.createSuiteDescription("");42        assertTrue(description1.isEmpty(), "Description is empty");43    }44}45Example 3: Using isEmpty() method of org.junit.runner.Description class to check whether the description is empty or not

isEmpty

Using AI Code Generation

1import org.junit.runner.Description;2import org.junit.runner.RunWith;3import org.junit.runner.notification.RunNotifier;4import org.junit.runners.BlockJUnit4ClassRunner;5import org.junit.runners.model.InitializationError;6@RunWith(DescriptionRunner.class)7public class DescriptionRunnerTest {8    public void testDescription() {9        Description description = Description.createSuiteDescription("DescriptionRunnerTest");10        System.out.println("DescriptionRunnerTest.isEmpty: " + description.isEmpty());11    }12}13public class DescriptionRunner extends BlockJUnit4ClassRunner {14    public DescriptionRunner(Class<?> klass) throws InitializationError {15        super(klass);16    }17    public void run(RunNotifier notifier) {18        Description description = getDescription();19        System.out.println("DescriptionRunner.isEmpty: " + description.isEmpty());20        super.run(notifier);21    }22}

isEmpty

Using AI Code Generation

1import org.junit.runner.Description;2import org.junit.runner.RunWith;3import org.junit.runners.Suite;4import org.junit.runners.Suite.SuiteClasses;5import org.junit.runners.model.InitializationError;6import org.junit.runners.model.RunnerBuilder;7import org.junit.runners.model.RunnerScheduler;8@RunWith(MySuite.class)9@SuiteClasses({ Test1.class, Test2.class, Test3.class })10public class MySuite extends Suite {11	public MySuite(Class<?> klass, RunnerBuilder builder) throws InitializationError {12		super(klass, builder);13	}14	public void run(RunnerScheduler scheduler) {15		Description description = getDescription();16		if (description.isEmpty()) {17			System.out.println("No test found");18		} else {19			System.out.println("Test found");20		}21		super.run(scheduler);22	}23}24package com.mkyong;25import org.junit.Test;26import org.junit.runner.RunWith;27import org.junit.runners.Suite;28import org.junit.runners.Suite.SuiteClasses;29@RunWith(Suite.class)30@SuiteClasses({ MySuite.class })31public class Test1 {32	public void test1() {33		System.out.println("Test1");34	}35}36package com.mkyong;37import org.junit.Test;38public class Test2 {39	public void test2() {40		System.out.println("Test2");41	}42}43package com.mkyong;44import org.junit.Test;45public class Test3 {46	public void test3() {47		System.out.println("Test3");48	}49}

isEmpty

Using AI Code Generation

1Description description = Description.createSuiteDescription("TestSuite");2assertTrue(description.isEmpty());3Description test1 = Description.createTestDescription("Test1", "Test1");4assertFalse(test1.isEmpty());5Description test2 = Description.createTestDescription("Test2", "Test2");6assertFalse(test2.isEmpty());7Description test3 = Description.createTestDescription("Test3", "Test3");8assertFalse(test3.isEmpty());9Description test4 = Description.createTestDescription("Test4", "Test4");10assertFalse(test4.isEmpty());11Description suite = Description.createSuiteDescription("Suite", test1, test2, test3, test4);12assertFalse(suite.isEmpty());13Description suite2 = Description.createSuiteDescription("Suite2", test1, test2, test3, test4);14assertFalse(suite2.isEmpty());15Description suite3 = Description.createSuiteDescription("Suite3", suite, suite2);16assertFalse(suite3.isEmpty());17Description suite4 = Description.createSuiteDescription("Suite4", suite, suite2);18assertFalse(suite4.isEmpty());19Description suite5 = Description.createSuiteDescription("Suite5", suite3, suite4);20assertFalse(suite5.isEmpty());21Description suite6 = Description.createSuiteDescription("Suite6", suite3, suite4);22assertFalse(suite6.isEmpty());23Description suite7 = Description.createSuiteDescription("Suite7", suite5, suite6);24assertFalse(suite7.isEmpty());25Description suite8 = Description.createSuiteDescription("Suite8", suite5, suite6);26assertFalse(suite8.isEmpty());27Description suite9 = Description.createSuiteDescription("Suite9", suite7, suite8);28assertFalse(suite9.isEmpty());29Description suite10 = Description.createSuiteDescription("Suite10", suite7, suite8);30assertFalse(suite10.isEmpty());31Description suite11 = Description.createSuiteDescription("Suite11", suite9, suite10);32assertFalse(suite11.isEmpty());33Description suite12 = Description.createSuiteDescription("Suite12", suite9, suite10);34assertFalse(suite12.isEmpty());35Description suite13 = Description.createSuiteDescription("Suite13", suite11, suite12);36assertFalse(suite13.isEmpty());37Description suite14 = Description.createSuiteDescription("Suite14", suite11, suite12);38assertFalse(suite14.isEmpty());39Description suite15 = Description.createSuiteDescription("Suite15", suite13, suite14);40assertFalse(suite15.isEmpty());41Description suite16 = Description.createSuiteDescription("Suite16", suite13, suite14);42assertFalse(suite16.isEmpty());43Description suite17 = Description.createSuiteDescription("Suite17", suite15, suite16);44assertFalse(suite17.isEmpty());

isEmpty

Using AI Code Generation

1public Description description = Description.createSuiteDescription("test");2public void test() {3    assertTrue(description.isEmpty());4}5public Filter filter = Filter.matchMethodDescription(Description.createSuiteDescription("test"));6public void test() {7    assertTrue(filter.isEmpty());8}9public NoTestsRemainException noTestsRemainException = new NoTestsRemainException();10public void test() {11    assertTrue(noTestsRemainException.isEmpty());12}13public Request request = Request.aClass(this.getClass());14public void test() {15    assertTrue(request.isEmpty());16}17public Failure failure = new Failure(Description.createSuiteDescription("test"), new Throwable());18public void test() {19    assertTrue(failure.isEmpty());20}21public RunListener runListener = new RunListener();22public void test() {23    assertTrue(runListener.isEmpty());24}25public RunNotifier runNotifier = new RunNotifier();26public void test() {27    assertTrue(runNotifier.isEmpty());28}29public StoppedByUserException stoppedByUserException = new StoppedByUserException();30public void test() {31    assertTrue(stoppedByUserException.isEmpty());32}33public Result result = new Result();34public void test() {35    assertTrue(result.isEmpty());36}37public Sorter sorter = new Sorter(Description.createSuiteDescription("test"));38public void test() {39    assertTrue(sorter.isEmpty());40}41public Filter filter = Filter.matchMethodDescription(Description.createSuiteDescription("test"));42public void test() {43    assertTrue(filter.isEmpty());44}

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.