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How to use failBecauseExceptionWasNotThrown method of org.assertj.core.api.Fail class

Best Assertj code snippet using org.assertj.core.api.Fail.failBecauseExceptionWasNotThrown

Source:Java7StyleAssertions.java

1package com.baeldung.testing.assertj.exceptions;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.fail;4import static org.assertj.core.api.Assertions.failBecauseExceptionWasNotThrown;5import org.junit.Test;6public class Java7StyleAssertions {7    @Test8    public void whenDividingByZero_thenArithmeticException() {9        try {10            int numerator = 10;11            int denominator = 0;12            int quotient = numerator / denominator;13            fail("ArithmeticException expected because dividing by zero yields an ArithmeticException.");14            failBecauseExceptionWasNotThrown(ArithmeticException.class);15        } catch (Exception e) {16            assertThat(e).hasMessage("/ by zero");17            assertThat(e).isInstanceOf(ArithmeticException.class);18        }19    }20}...

failBecauseExceptionWasNotThrown

Using AI Code Generation

1package com.baeldung.junit5;2import org.junit.jupiter.api.Test;3import org.junit.jupiter.api.function.Executable;4import static org.assertj.core.api.Assertions.assertThat;5import static org.assertj.core.api.Assertions.failBecauseExceptionWasNotThrown;6public class FailTest {7    public void givenExceptionThrown_whenUsingCatchThrowable_thenCorrect() {8        Throwable thrown = catchThrowable(() -> {9            throw new Exception("boom!");10        });11        assertThat(thrown).isInstanceOf(Exception.class).hasMessageContaining("boom");12    }13    public void givenExceptionThrown_whenUsingAssertThrows_thenCorrect() {14        Exception exception = assertThrows(Exception.class, () -> {15            throw new Exception("boom!");16        });17        assertThat(exception).hasMessageContaining("boom");18    }19    public void givenExceptionThrown_whenUsingFailBecauseExceptionWasNotThrown_thenCorrect() {20        try {21            failBecauseExceptionWasNotThrown(Exception.class);22        } catch (AssertionError e) {23            assertThat(e).hasMessageContaining("Expecting code to raise a throwable of type");24        }25    }26}

failBecauseExceptionWasNotThrown

Using AI Code Generation

1import org.assertj.core.api.Fail;2import org.junit.Test;3public class FailTest {4    public void test() {5        Fail.failBecauseExceptionWasNotThrown(NullPointerException.class);6    }7}8at org.assertj.core.api.Fail.failBecauseExceptionWasNotThrown(Fail.java:93)9at com.baeldung.fail.FailTest.test(FailTest.java:13)10at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)11at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)12at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)13at java.lang.reflect.Method.invoke(Method.java:498)14at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)15at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)16at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)17at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)18at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)19at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)20at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)21at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)22at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)23at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)24at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)25at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)26at org.junit.runners.ParentRunner.run(ParentRunner.java:363)27at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)28at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)29at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538)30at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)31at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460)

failBecauseExceptionWasNotThrown

Using AI Code Generation

1package com.javabydeveloper.lombok;2import org.junit.jupiter.api.Test;3public class FailTest {4	public void testFailBecauseExceptionWasNotThrown() {5		org.assertj.core.api.Fail.failBecauseExceptionWasNotThrown(java.lang.ArithmeticException.class, "Expected exception of type java.lang.ArithmeticException", () -> {6			throw new java.lang.ArithmeticException();7		});8		org.assertj.core.api.Fail.failBecauseExceptionWasNotThrown(java.lang.ArithmeticException.class, "Expected exception of type java.lang.ArithmeticException", () -> {9			throw new java.lang.ArithmeticException();10		});

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