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How to use throwsNullPointerExceptionWithMessage method of samples.junit4.rules.ThrowingRuleTest class

Best Powermock code snippet using samples.junit4.rules.ThrowingRuleTest.throwsNullPointerExceptionWithMessage

Source:ThrowingRuleTest.java

...34        thrown.expect(RuntimeException.class);35        throw new RuntimeException();36    }37    @Test38    public void throwsNullPointerExceptionWithMessage() {39        thrown.expect(NullPointerException.class);40        thrown.expectMessage("What happened?");41        throw new NullPointerException("What happened?");42    }43    @Test(expected = NullPointerException.class)44    public void unexpectAssertionErrorFailsTestCorrectly() {45        throw new NullPointerException("What happened?");46    }47}...

throwsNullPointerExceptionWithMessage

Using AI Code Generation

1    at com.example.MyClass.myMethod(MyClass.java:123)2    at com.example.MyTest.test(MyTest.java:456)3public class ThrowingRuleTest {4    public ExpectedException thrown = ExpectedException.none();5    public void throwsNullPointerExceptionWithMessage() throws Exception {6        thrown.expect(NullPointerException.class);7        thrown.expectMessage("the message");8        throw new NullPointerException("the message");9    }10}11    at org.junit.rules.ExpectedException.handleException(ExpectedException.java:194)12    at org.junit.rules.ExpectedException.access$000(ExpectedException.java:79)13    at org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:168)14    at org.junit.rules.RunRules.evaluate(RunRules.java:20)15    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)16    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)17    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)

throwsNullPointerExceptionWithMessage

Using AI Code Generation

1import static samples.junit4.rules.ThrowingRuleTest.throwsNullPointerExceptionWithMessage;2public class ThrowingRuleTest {3    public ThrowingRule throwingRule = new ThrowingRule();4    public void testThrowsNullPointerException() {5        throwingRule.setExceptionToThrow(new NullPointerException());6    }7    public void testThrowsNullPointerExceptionWithMessage() {8        throwingRule.setExceptionToThrow(throwsNullPointerExceptionWithMessage("my message"));9    }10}11public class ThrowingRule implements TestRule {12    private Throwable exceptionToThrow;13    public void setExceptionToThrow(Throwable exceptionToThrow) {14        this.exceptionToThrow = exceptionToThrow;15    }16    public Statement apply(final Statement base, Description description) {17        return new Statement() {18            public void evaluate() throws Throwable {19                try {20                    base.evaluate();21                } catch (Exception e) {22                    if (exceptionToThrow != null) {23                        throw exceptionToThrow;24                    }25                    throw e;26                }27            }28        };29    }30    public static NullPointerException throwsNullPointerExceptionWithMessage(String message) {31        NullPointerException exception = new NullPointerException();32        exception.setStackTrace(new StackTraceElement[0]);33        exception.initCause(new Throwable(message));34        return exception;35    }36}

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