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How to use withMessage method of org.assertj.core.api.ThrowableAssertAlternative class

Best Assertj code snippet using org.assertj.core.api.ThrowableAssertAlternative.withMessage

Source:ThrowableTypeAssert.java

...43   * and allow to chain assertions on the thrown exception.44   * <p>45   * Example:46   * <pre><code class='java'> assertThatExceptionOfType(IOException.class).isThrownBy(() -&gt; { throw new IOException("boom!"); })47   *                                       .withMessage("boom!"); </code></pre>48   *49   * @param throwingCallable code throwing the exception of expected type 50   * @return return a {@link ThrowableAssertAlternative}.51   */52  public ThrowableAssertAlternative<T> isThrownBy(final ThrowingCallable throwingCallable) {53    Throwable throwable = ThrowableAssert.catchThrowable(throwingCallable);54    assertThat(throwable).as(description).hasBeenThrown().isInstanceOf(expectedThrowableType);55    @SuppressWarnings("unchecked")56    T c = (T) throwable;57    return new ThrowableAssertAlternative<>(c).as(description);58  }59  /** {@inheritDoc} */60  @Override61  @CheckReturnValue...

Source:RetrofitVehicleServiceTest.java

...24  private ThrowableAssertAlternative<IllegalArgumentException> assertExceptionThrownForVrn(25      String o) {26    return assertThatExceptionOfType(IllegalArgumentException.class)27        .isThrownBy(() -> retrofitVehicleService.infoByVrn(o))28        .withMessage("VRN cannot be empty");29  }30}...

withMessage

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class AssertJTest {4    public void test() {5        Assertions.assertThatExceptionOfType(RuntimeException.class)6                .isThrownBy(() -> {7                    throw new RuntimeException("This is a runtime exception");8                })9                .withMessage("This is a runtime exception");10    }11}12at org.junit.Assert.assertEquals(Assert.java:115)13at org.junit.Assert.assertEquals(Assert.java:144)14at org.assertj.core.api.ThrowableAssertAlternative.withMessage(ThrowableAssertAlternative.java:129)15at AssertJTest.test(AssertJTest.java:15)16assertThatThrownBy() method17import org.assertj.core.api.Assertions;18import org.junit.Test;19public class AssertJTest {20    public void test() {21        Assertions.assertThatThrownBy(() -> {22            throw new RuntimeException("This is a runtime exception");23        })24                .isInstanceOf(RuntimeException.class)25                .withMessage("This is a runtime exception");26    }27}28at org.junit.Assert.assertEquals(Assert.java:115)29at org.junit.Assert.assertEquals(Assert.java:144)30at org.assertj.core.api.ThrowableAssertAlternative.withMessage(ThrowableAssertAlternative.java:129)

withMessage

Using AI Code Generation

1import org.junit.Test;2import static org.assertj.core.api.Assertions.*;3public class 1 {4    public void test() {5        try {6            throw new RuntimeException("message");7        } catch (RuntimeException e) {8            assertThat(e).withMessage("message");9        }10    }11}

withMessage

Using AI Code Generation

1package com.java2novice.junit.asserts;2import org.junit.Test;3import static org.assertj.core.api.Assertions.assertThat;4public class AssertJWithMessageTest {5    public void testWithMessage() {6        try {7            int[] numArr = { 1, 2, 3 };8            int num = numArr[3];9        } catch (Exception ex) {10            assertThat(ex).as("This is an exception message").hasMessage("This is an exception message");11        }12    }13}

withMessage

Using AI Code Generation

1package com.mycompany.app;2import static org.assertj.core.api.Assertions.*;3import static org.assertj.core.api.Assertions.assertThatExceptionOfType;4import java.io.IOException;5{6    public static void main( String[] args )7    {8        assertThatExceptionOfType(IOException.class)9            .isThrownBy(() -> {10                throw new IOException("Error");11            })12            .withMessage("Error");13    }14}15package com.mycompany.app;16import static org.assertj.core.api.Assertions.*;17import static org.assertj.core.api.Assertions.assertThatExceptionOfType;18import java.io.IOException;19{20    public static void main( String[] args )21    {22        assertThatExceptionOfType(IOException.class)23            .isThrownBy(() -> {24                throw new IOException("Error");25            })26            .withMessageContaining("Err");27    }28}

withMessage

Using AI Code Generation

1package com.automationintesting.unit;2import org.junit.Test;3import static org.assertj.core.api.Assertions.assertThat;4import static org.assertj.core.api.Assertions.withMessage;5public class ExceptionTest {6    public void exceptionMessageTest() {7        try {8            throw new RuntimeException("This is a test");9        } catch (RuntimeException ex) {10            assertThat(ex).withMessage("This is a test");11        }12    }13}14package com.automationintesting.unit;15import org.junit.Test;16import static org.assertj.core.api.Assertions.assertThat;17import static org.assertj.core.api.Assertions.withMessage;18public class ExceptionTest {19    public void exceptionMessageTest() {20        try {21            throw new RuntimeException("This is a test");22        } catch (RuntimeException ex) {23            assertThat(ex).withMessage("This is a %s", "test");24        }25    }26}

withMessage

Using AI Code Generation

1import org.junit.Test;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.assertThatThrownBy;4import java.util.Scanner;5public class TestException {6    public void testException() {7        assertThatThrownBy(() -> {8            throw new Exception("Exception message");9        }).isInstanceOf(Exception.class)10                .hasMessage("Exception message");11    }12}13	at org.junit.Assert.fail(Assert.java:88)14	at org.junit.Assert.failNotNull(Assert.java:755)15	at org.junit.Assert.assertNotNull(Assert.java:744)16	at org.junit.Assert.assertNotNull(Assert.java:754)17	at TestException.testException(TestException.java:13)18	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)19	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)20	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)21	at java.lang.reflect.Method.invoke(Method.java:498)22	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:688)23	at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)24	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)25	at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)26	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)27	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)28	at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)29	at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)30	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)31	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)32	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)

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