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How to use NoTestsRemainException class of org.junit.runner.manipulation package

Best junit code snippet using org.junit.runner.manipulation.NoTestsRemainException

NoTestsRemainException`org.junit.runner.manipulation.NoTestsRemainException`

This happens when runner does not have any test to execute. Example, Running test of a group where not test match or using any filter which does not has any test to execute by runner.

Code Snippets

Here are code snippets that can help you understand more how developers are using

Source:PMDTestRunner.java

...7import org.junit.runner.Description;8import org.junit.runner.Runner;9import org.junit.runner.manipulation.Filter;10import org.junit.runner.manipulation.Filterable;11import org.junit.runner.manipulation.NoTestsRemainException;12import org.junit.runner.manipulation.Sortable;13import org.junit.runner.manipulation.Sorter;14import org.junit.runner.notification.RunNotifier;15import org.junit.runners.JUnit4;16import org.junit.runners.ParentRunner;17import org.junit.runners.model.InitializationError;18/**19 * A JUnit Runner, that combines the default {@link JUnit4}20 * and our custom {@link RuleTestRunner}.21 * It allows to selectively execute single test cases (it is {@link Filterable}).22 * 23 * <p>Note: Since we actually run two runners one after another, the static {@code BeforeClass}24 * and {@Code AfterClass} methods will be executed twice and the test class will be instantiated twice, too.</p>25 *26 * <p>In order to use it, you'll need to subclass {@link SimpleAggregatorTst} and27 * annotate your test class with RunWith:</p>28 * 29 * <pre>30 * &#64;RunWith(PMDTestRunner.class)31 * public class MyRuleSetTest extends SimpleAggregatorTst {32 * ...33 * }34 * </pre>35 */36public class PMDTestRunner extends Runner implements Filterable, Sortable {37    private final Class<? extends SimpleAggregatorTst> klass;38    private final RuleTestRunner ruleTests;39    private final ParentRunner<?> unitTests;40    public PMDTestRunner(final Class<? extends SimpleAggregatorTst> klass) throws InitializationError {41        this.klass = klass;42        ruleTests = new RuleTestRunner(klass);43        if (ruleTests.hasUnitTests()) {44            unitTests = new JUnit4(klass);45        } else {46            unitTests = new EmptyRunner(klass);47        }48    }49    @Override50    public void filter(Filter filter) throws NoTestsRemainException {51        boolean noRuleTests = false;52        try {53            ruleTests.filter(filter);54        } catch (NoTestsRemainException e) {55            noRuleTests = true;56        }57        boolean noUnitTests = false;58        try {59            unitTests.filter(filter);60        } catch (NoTestsRemainException e) {61            noUnitTests = false;62        }63        if (noRuleTests && noUnitTests) {64            throw new NoTestsRemainException();65        }66    }67    @Override68    public Description getDescription() {69        Description description = Description.createSuiteDescription(klass);70        description.addChild(createChildrenDescriptions(ruleTests, "Rule Tests"));71        description.addChild(createChildrenDescriptions(unitTests, "Unit Tests"));72        return description;73    }74    private Description createChildrenDescriptions(Runner runner, String suiteName) {75        Description suite = Description.createSuiteDescription(suiteName);76        for (Description child : runner.getDescription().getChildren()) {77            suite.addChild(child);78        }...

Source:TestClassMethodsRunner.java

...11import org.junit.runner.Description;12import org.junit.runner.Runner;13import org.junit.runner.manipulation.Filter;14import org.junit.runner.manipulation.Filterable;15import org.junit.runner.manipulation.NoTestsRemainException;16import org.junit.runner.manipulation.Sortable;17import org.junit.runner.manipulation.Sorter;18import org.junit.runner.notification.RunNotifier;1920public class TestClassMethodsRunner extends Runner implements Filterable, Sortable {21	private final List<Method> fTestMethods;22	private final Class<?> fTestClass;2324	// This assumes that some containing runner will perform validation of the test methods	25	public TestClassMethodsRunner(Class<?> klass) {26		fTestClass= klass;27		fTestMethods= new TestIntrospector(getTestClass()).getTestMethods(Test.class);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	}102}

Source:ParameterisedFrameworkMethod.java

...4import java.util.List;5import org.junit.runner.Description;6import org.junit.runner.manipulation.Filter;7import org.junit.runner.manipulation.Filterable;8import org.junit.runner.manipulation.NoTestsRemainException;9import org.junit.runners.model.FrameworkMethod;10/**11 * A {@link FrameworkMethod} that represents a parameterized method.12 *13 * <p>This contains a list of {@link InstanceFrameworkMethod} that represent the individual14 * instances of this method, one per parameter set.15 */16public class ParameterisedFrameworkMethod extends DescribableFrameworkMethod implements Filterable {17    /**18     * The base description, used as a template when creating {@link Description}.19     */20    private final Description baseDescription;21    /**22     * The list of {@link InstanceFrameworkMethod} that represent individual instances of this23     * method.24     */25    private List<InstanceFrameworkMethod> instanceMethods;26    /**27     * The {@link Description}, created lazily and updated after filtering.28     */29    private Description description;30    public ParameterisedFrameworkMethod(Method method, Description baseDescription,31            List<InstanceFrameworkMethod> instanceMethods) {32        super(method);33        this.baseDescription = baseDescription;34        this.instanceMethods = instanceMethods;35    }36    @Override37    public Description getDescription() {38        if (description == null) {39            description = baseDescription.childlessCopy();40            for (InstanceFrameworkMethod instanceMethod : instanceMethods) {41                description.addChild(instanceMethod.getInstanceDescription());42            }43        }44        return description;45    }46    public List<InstanceFrameworkMethod> getMethods() {47        return instanceMethods;48    }49    @Override50    public void filter(Filter filter) throws NoTestsRemainException {51        int count = instanceMethods.size();52        for (Iterator<InstanceFrameworkMethod> i = instanceMethods.iterator(); i.hasNext(); ) {53            InstanceFrameworkMethod instanceMethod = i.next();54            if (filter.shouldRun(instanceMethod.getInstanceDescription())) {55                try {56                    filter.apply(instanceMethod);57                } catch (NoTestsRemainException e) {58                    i.remove();59                }60            } else {61                i.remove();62            }63        }64        if (instanceMethods.size() != count) {65            // Some instance methods have been filtered out, so invalidate the description.66            description = null;67        }68        if (instanceMethods.isEmpty()) {69            throw new NoTestsRemainException();70        }71    }72}...

Source:AbstractCommonPowerMockRunner.java

...17import org.junit.runner.Description;18import org.junit.runner.Runner;19import org.junit.runner.manipulation.Filter;20import org.junit.runner.manipulation.Filterable;21import org.junit.runner.manipulation.NoTestsRemainException;22import org.junit.runner.manipulation.Sortable;23import org.junit.runner.manipulation.Sorter;24import org.junit.runner.notification.RunNotifier;25import org.powermock.modules.junit4.common.internal.JUnit4TestSuiteChunker;26import org.powermock.modules.junit4.common.internal.PowerMockJUnitRunnerDelegate;27public abstract class AbstractCommonPowerMockRunner extends Runner implements Filterable, Sortable {28	private JUnit4TestSuiteChunker suiteChunker;29	public AbstractCommonPowerMockRunner(Class<?> klass, Class<? extends PowerMockJUnitRunnerDelegate> runnerDelegateImplClass) throws Exception {30		suiteChunker = new JUnit4TestSuiteChunkerImpl(klass, runnerDelegateImplClass);31	}32	@Override33	public Description getDescription() {34		return suiteChunker.getDescription();35	}36	@Override37	public void run(RunNotifier notifier) {38		suiteChunker.run(notifier);39	}40	@Override41	public synchronized int testCount() {42		return suiteChunker.getTestCount();43	}44	public void filter(Filter filter) throws NoTestsRemainException {45		suiteChunker.filter(filter);46	}47	public void sort(Sorter sorter) {48		suiteChunker.sort(sorter);49	}50}...

Source:CompositeRunner.java

...9import org.junit.runner.Description;10import org.junit.runner.Runner;11import org.junit.runner.manipulation.Filter;12import org.junit.runner.manipulation.Filterable;13import org.junit.runner.manipulation.NoTestsRemainException;14import org.junit.runner.manipulation.Sortable;15import org.junit.runner.manipulation.Sorter;16import org.junit.runner.notification.RunNotifier;1718public class CompositeRunner extends Runner implements Filterable, Sortable {19	private final List<Runner> fRunners= new ArrayList<Runner>();20	private final String fName;21	22	public CompositeRunner(String name) {23		fName= name;24	}25	26	@Override27	public void run(RunNotifier notifier) {28		for (Runner each : fRunners)29			each.run(notifier);30	}3132	@Override33	public Description getDescription() {34		Description spec= Description.createSuiteDescription(fName);35		for (Runner runner : fRunners)36			spec.addChild(runner.getDescription());37		return spec;38	}3940	public List<Runner> getRunners() {41		return fRunners;42	}4344	public void addAll(List<? extends Runner> runners) {45		fRunners.addAll(runners);46	}4748	public void add(Runner runner) {49		fRunners.add(runner);50	}51	52	public void filter(Filter filter) throws NoTestsRemainException {53		for (Iterator<Runner> iter= fRunners.iterator(); iter.hasNext();) {54			Runner runner= iter.next();55			if (filter.shouldRun(runner.getDescription()))56				filter.apply(runner);57			else58				iter.remove();59		}60	}6162	protected String getName() {63		return fName;64	}6566	public void sort(final Sorter sorter) {
...

Source:DelegatingFilterableTestSuite.java

...19import org.junit.Ignore;20import org.junit.runner.Description;21import org.junit.runner.manipulation.Filter;22import org.junit.runner.manipulation.Filterable;23import org.junit.runner.manipulation.NoTestsRemainException;24/**25 * A {@link DelegatingTestSuite} that is {@link Filterable}.26 */27@Ignore28class DelegatingFilterableTestSuite extends DelegatingTestSuite implements Filterable {29    public DelegatingFilterableTestSuite(TestSuite suiteDelegate) {30        super(suiteDelegate);31    }32    @Override33    public void filter(Filter filter) throws NoTestsRemainException {34        TestSuite suite = getDelegateSuite();35        TestSuite filtered = new TestSuite(suite.getName());36        int n = suite.testCount();37        for (int i = 0; i < n; i++) {38            Test test = suite.testAt(i);39            if (filter.shouldRun(makeDescription(test))) {40                filtered.addTest(test);41            }42        }43        setDelegateSuite(filtered);44        if (filtered.testCount() == 0) {45            throw new NoTestsRemainException();46        }47    }48    private static Description makeDescription(Test test) {49        // delegate to JUnit38ClassRunner copy.50        return JUnit38ClassRunner.makeDescription(test);51    }52}

Source:IMockJUnitRunner.java

2import org.junit.runner.Description;3import org.junit.runner.Runner;4import org.junit.runner.manipulation.Filter;5import org.junit.runner.manipulation.Filterable;6import org.junit.runner.manipulation.NoTestsRemainException;7import org.junit.runner.notification.RunNotifier;8import org.mockito.internal.runners.RunnerImpl;9import java.lang.reflect.InvocationTargetException;10/**11 * Created by jiayu.shenjy on 2016/4/11.12 */13public class IMockJUnitRunner  extends Runner implements Filterable {14    private final RunnerImpl runner;15    public IMockJUnitRunner(Class<?> klass) throws InvocationTargetException {16        runner = new IMockRunnerFactory().create(klass);17    }18    @Override19    public void run(final RunNotifier notifier) {20        runner.run(notifier);21    }22    @Override23    public Description getDescription() {24        return runner.getDescription();25    }26    public void filter(Filter filter) throws NoTestsRemainException {27        //filter is required because without it UnrootedTests show up in Eclipse28        runner.filter(filter);29    }30}...

Source:DynamicRunner.java

...10package org.junit.vintage.engine.samples.junit4;11import org.junit.runner.Description;12import org.junit.runner.manipulation.Filter;13import org.junit.runner.manipulation.Filterable;14import org.junit.runner.manipulation.NoTestsRemainException;15public class DynamicRunner extends ConfigurableRunner implements Filterable {16	public DynamicRunner(Class<?> testClass) {17		super(testClass);18	}19	@Override20	public Description getDescription() {21		return Description.createSuiteDescription(testClass);22	}23	@Override24	public void filter(Filter filter) throws NoTestsRemainException {25		filteredChildren.removeIf(each -> !filter.shouldRun(each));26		if (filteredChildren.isEmpty()) {27			throw new NoTestsRemainException();28		}29	}30}...

NoTestsRemainException

Using AI Code Generation

1package com.javatpoint;  2import org.junit.runner.JUnitCore;  3import org.junit.runner.Result;  4import org.junit.runner.notification.Failure;  5import org.junit.runner.manipulation.NoTestsRemainException;  6public class TestRunner{  7public static void main(String[] args){  8Result result=JUnitCore.runClasses(TestJunit.class);  9for(Failure failure:result.getFailures()){  10System.out.println(failure.toString());  11}  12try{  13result.getRunListener().testRunFinished(result);  14}catch(NoTestsRemainException e){  15System.out.println("NoTestsRemainException: "+e);  16}  17System.out.println("Result=="+result.wasSuccessful());  18}  19}

NoTestsRemainException

Using AI Code Generation

1package com.tutorialspoint.junit;2import org.junit.runner.JUnitCore;3import org.junit.runner.Request;4import org.junit.runner.Result;5import org.junit.runner.RunWith;6import org.junit.runner.manipulation.NoTestsRemainException;7import org.junit.runner.manipulation.Filter;8import org.junit.runner.manipulation.Filterable;9import org.junit.runner.Description;10import org.junit.runners.Suite;11import org.junit.runners.Suite.SuiteClasses;12@RunWith(Suite.class)13@SuiteClasses({ TestJunit1.class, TestJunit2.class })14public class JunitTestSuite {15   public static void main(String[] args) {16      Result result = JUnitCore.runClasses(JunitTestSuite.class);17      for (Failure failure : result.getFailures()) {18         System.out.println(failure.toString());19      }20      System.out.println(result.wasSuccessful());21   }22}23package com.tutorialspoint.junit;24import org.junit.Test;25import static org.junit.Assert.assertEquals;26public class TestJunit1 {27   String message = "Robert";	28   MessageUtil messageUtil = new MessageUtil(message);29   public void testPrintMessage() {	30      System.out.println("Inside testPrintMessage()");    31      assertEquals(message,messageUtil.printMessage());32   }33}34package com.tutorialspoint.junit;35import org.junit.Test;36import static org.junit.Assert.assertEquals;37public class TestJunit2 {38   String message = "Robert";	39   MessageUtil messageUtil = new MessageUtil(message);40   public void testSalutationMessage() {41      System.out.println("Inside testSalutationMessage()");42      message = "Hi!" + "Robert";43      assertEquals(message,messageUtil.salutationMessage());44   }45}46package com.tutorialspoint.junit;47public class MessageUtil {48   private String message;49   public MessageUtil(String message){50      this.message = message;51   }52   public String printMessage(){53      System.out.println(message);54      return message;55   }   56   public String salutationMessage(){57      message = "Hi!" + message;58      System.out.println(message);59      return message;60   }   61}62Inside testPrintMessage()63Inside testSalutationMessage()

NoTestsRemainException

Using AI Code Generation

1import org.junit.runner.manipulation.NoTestsRemainException;2import org.junit.runner.JUnitCore;3import org.junit.runner.Request;4import org.junit.runner.Result;5import org.junit.runner.notification.Failure;6public class TestRunner {7   public static void main(String[] args) {8      Result result = JUnitCore.runClasses(TestJunit.class);9      for (Failure failure : result.getFailures()) {10         System.out.println(failure.toString());11      }12      System.out.println(result.wasSuccessful());13   }14}15at org.junit.runner.Request.getRunner(Request.java:85)16at org.junit.runner.JUnitCore.run(JUnitCore.java:157)17at org.junit.runner.JUnitCore.run(JUnitCore.java:136)18at TestRunner.main(TestRunner.java:7)

NoTestsRemainException

Using AI Code Generation

1package com.journaldev.junit;  2import org.junit.runner.JUnitCore;  3import org.junit.runner.Request;  4import org.junit.runner.Result;  5import org.junit.runner.manipulation.NoTestsRemainException;  6import org.junit.runner.manipulation.Filter;  7public class JUnitFilterExample {  8    public static void main(String[] args) {  9        JUnitCore core = new JUnitCore();  10        Request request = Request.aClass(JUnitFilter.class);  11        try {  12            request = request.filterWith(new Filter() {  13                public boolean shouldRun(org.junit.runner.Description description) {  14                    return description.getMethodName().equals("test1");  15                }  16                public String describe() {  17                    return "Filter to run only test1 method";  18                }  19            });  20        } catch (NoTestsRemainException e) {  21            e.printStackTrace();  22        }  23        Result result = core.run(request);  24        System.out.println("Run Count: " + result.getRunCount());  25        System.out.println("Failure Count: " + result.getFailureCount());  26    }  27}28package com.journaldev.junit;  29import org.junit.runner.JUnitCore;  30import org.junit.runner.Request;  31import org.junit.runner.Result;  32import org.junit.runner.manipulation.NoTestsRemainException;  33import org.junit.runner.manipulation.Filter;  34public class JUnitFilterExample {  35    public static void main(String[] args) {  36        JUnitCore core = new JUnitCore();  37        Request request = Request.aClass(JUnitFilter.class);  38        try {  39            request = request.filterWith(new Filter() {  40                public boolean shouldRun(org.junit.runner.Description description) {  41                    return description.getMethodName().equals("test1");  42                }  43                public String describe() {  44                    return "Filter to run only test1 method";  45                }  46            });  47        } catch (NoTestsRemainException e) {  48            e.printStackTrace();  49        }

NoTestsRemainException

Using AI Code Generation

1package com.baeldung.junit5;2import org.junit.jupiter.api.Test;3import org.junit.runner.manipulation.NoTestsRemainException;4public class NoTestsRemainExceptionUnitTest {5    public void whenException_thenCorrect() {6        throw new NoTestsRemainException();7    }8}9	at com.baeldung.junit5.NoTestsRemainExceptionUnitTest.whenException_thenCorrect(NoTestsRemainExceptionUnitTest.java:13)10import org.junit.JUnitException;11public class JUnitExceptionUnitTest {12    public void whenException_thenCorrect() {13        throw new JUnitException("JUnit Exception");14    }15}16	at com.baeldung.junit5.JUnitExceptionUnitTest.whenException_thenCorrect(JUnitExceptionUnitTest.java:13)17import org.junit.ComparisonFailure;18public class ComparisonFailureUnitTest {19    public void whenException_thenCorrect() {20        throw new ComparisonFailure("Comparison Failure", "expected", "actual");21    }22}23	at com.baeldung.junit5.ComparisonFailureUnitTest.whenException_thenCorrect(ComparisonFailureUnitTest.java:13)24import org.junit.AssertionFailedError;25public class AssertionFailedErrorUnitTest {26    public void whenException_thenCorrect() {27        throw new AssertionFailedError("Assertion Failed Error");28    }29}30	at com.baeldung.junit5.AssertionFailedErrorUnitTest.whenException_thenCorrect(AssertionFailedErrorUnitTest.java:13)

Source: running a subset of JUnit @Test methods

1if (someobject == null) {2 // Handle null here then move on.3}4

Source: jUnit ignore @Test methods from base class

1class C {2    private final MyType mustBeSet;3    public C(MyType mything) {4       mustBeSet=Contract.notNull(mything);5    }6   private String name = "<unknown>";7   public void setName(String s) {8      name = Contract.notNull(s);9   }10}111213class Contract {14    public static <T> T notNull(T t) { if (t == null) { throw new ContractException("argument must be non-null"); return t; }15}16

Source:jUnit ignore @Test methods from base class

class C {
    private final MyType mustBeSet;
    public C(MyType mything) {
       mustBeSet=Contract.notNull(mything);
    }
   private String name = "<unknown>";
   public void setName(String s) {
      name = Contract.notNull(s);
   }
}


class Contract {
    public static <T> T notNull(T t) { if (t == null) { throw new ContractException("argument must be non-null"); return t; }
}

Source: How to run all tests belonging to a certain Category in JUnit 4

1Optional<Integer> possible = Optional.of(5);2possible.isPresent(); // returns true3possible.get(); // returns 54

JUnit Tutorial:

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JUnit Tutorial Chapters:

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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.