How to use testNoErrorThrownIfSingleThreaded method of com.tngtech.jgiven.testng.IncompatibleMultiThreadingCheckerTest class

Best JGiven code snippet using com.tngtech.jgiven.testng.IncompatibleMultiThreadingCheckerTest.testNoErrorThrownIfSingleThreaded Github


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...25 assertThatCode(() -> underTest.checkIncompatibleMultiThreading(testInput))26 .isInstanceOf(JGivenWrongUsageException.class);27 }28 @Test29 public void testNoErrorThrownIfSingleThreaded() throws NoSuchMethodException {30 @Test(singleThreaded = true)31 class SingleThreadedInjectedTestClass {32 @ScenarioStage33 private String injected;34 @Test(enabled = false)35 public void singleThreadedTest() {36 }37 }38 ITestResult testInput = mockInput(SingleThreadedInjectedTestClass.class, "singleThreadedTest");39 assertThatCode(() -> underTest.checkIncompatibleMultiThreading(testInput))40 .doesNotThrowAnyException();41 }42 @Test43 public void testNoErrorThrownIfNoInjectedStages() throws NoSuchMethodException {...

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1public class IncompatibleMultiThreadingCheckerTest extends ScenarioTest<IncompatibleMultiThreadingCheckerTest.Steps> {2 public void testNoErrorThrownIfSingleThreaded() {3 given().a_test_class_with_$_scenarios( 1 );4 when().the_test_is_executed_in_a_single_thread();5 then().no_error_is_thrown();6 }7 public void testErrorThrownIfMultiThreaded() {8 given().a_test_class_with_$_scenarios( 1 );9 when().the_test_is_executed_in_$_threads( 2 );10 then().an_error_is_thrown();11 }12 public void testErrorThrownIfMultiThreadedEvenIfThereAreNoScenarios() {13 given().a_test_class_with_$_scenarios( 0 );14 when().the_test_is_executed_in_$_threads( 2 );15 then().an_error_is_thrown();16 }17 public static class Steps {18 private int numberOfScenarios;19 private int numberOfThreads;20 public Steps a_test_class_with_$_scenarios( int numberOfScenarios ) {21 this.numberOfScenarios = numberOfScenarios;22 return this;23 }24 public Steps the_test_is_executed_in_a_single_thread() {25 this.numberOfThreads = 1;26 return this;27 }28 public Steps the_test_is_executed_in_$_threads( int numberOfThreads ) {29 this.numberOfThreads = numberOfThreads;30 return this;31 }32 public Steps no_error_is_thrown() {33 assertThat( getException() ).isNull();34 return this;35 }36 public Steps an_error_is_thrown() {37 assertThat( getException() ).isNotNull();38 return this;39 }40 private Throwable getException() {41 try {42 IncompatibleMultiThreadingChecker.check( numberOfScenarios, numberOfThreads );43 return null;44 } catch( Throwable e ) {45 return e;46 }47 }48 }49}50The test class is executed by JUnit. The first two tests are successful but the third one fails. The test method testErrorThrownIfMultiThreadedEvenIfThereAreNoScenarios() fails with the following message:51The test method testErrorThrownIfMultiThreaded() fails with the following message:

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