assertEquals(Set.of(), getLoggedWarnings()); new FileAssert(actual).isEqualTo(con.getV3File()); } @ParameterizedTest @EnumSource // Downgrading files created by upgrade procedure is expected to always pass with
void upgradeFromV3toV3AlwaysPasses(Conversion con) throws Exception { File actual = convert(con.getV3File()); assertEquals(Set.of(), getLoggedWarnings()); new FileAssert(actual).isEqualTo(con.getV3File()); } @ParameterizedTest @EnumSource // Downgrading files created by upgrade procedure is...
In JUnit 5, we can useassertThrowsto assert an exception is thrown. P.S Tested with JUnit 5.5.2 1. Unchecked Exception 1.1 JUnit example of catching a runtime exception. ExceptionExample1.java packagecom.mkyong.assertions;importorg.junit.jupiter.api.Test;importstaticorg.junit.jupiter.api.Assert...
= null) {fail("No exception thrown when one was expected", con.expectedException);}assertEquals(...
public String exceptionMessage() { return thrownException().getMessage(); } /** * Returns {@code true} if the error is considered a failure * (i.e. if it is an instance of {@code AssertionFailedError}), * {@code false} otherwise. ...
Below is a complete example showing how to test exception as well as exception message.package com.journaldev.junit4; import org.junit.Rule; import org.junit.Test; import org.junit.rules.ExpectedException; public class JUnit4TestException { @Rule public ExpectedException thrown = ExpectedException....
1.2. Matches Specified Exception or Its Child Exception The assertThrows() will FAIL: If no exception is thrown from the executable block If an exception of a different type is thrown For example, in below example "1" is a valid number so no exception will be thrown. This test will fail...
3.1. Assert Exception Is Thrown When using JUnit 4, we can simplyuse theexpectedattribute of the@Testannotationto declare that we expect an exception to be thrown anywhere in the annotated test method. As a result, when the test is run, it will fail if the specified exception isn’t throw...
if(i<=0)thrownewIllegalArgumentException("age should be +ve"); if(i<18)returnfalse; elsereturntrue; } } (Guava preconditionsmight be more suitable for these argument checks, but the example is still valid). There are 3 common ways to check that exceptions are thrown, each with their ow...
@Test public void throwsException() { thrown.expect(NullPointerException.class); thrown.expectMessage("happened"); throw new NullPointerException("What happened?"); }It is recommended to set the order of the ExpectedException to Integer.MAX_VALUE if it is used together with another rule that ...