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

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

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...285 *286 * /​/​ assertion will pass287 * assertThatExceptionOfType(Throwable.class)288 * .isThrownBy(() -&gt; {throw throwable;})289 * .withCauseInstanceOf(NullPointerException.class);290 * assertThatExceptionOfType(Throwable.class)291 * .isThrownBy(() -&gt; {throw throwable;})292 * .withCauseInstanceOf(RuntimeException.class);293 *294 * /​/​ assertion will fail295 * assertThatExceptionOfType(Throwable.class)296 * .isThrownBy(() -&gt; {throw throwable;})297 * .withCauseInstanceOf(IllegalArgumentException.class);</​code></​pre>298 *299 * @param type the expected cause type.300 * @return this assertion object.301 * @throws NullPointerException if given type is {@code null}.302 * @throws AssertionError if the actual {@code Throwable} is {@code null}.303 * @throws AssertionError if the actual {@code Throwable} has no cause.304 * @throws AssertionError if the cause of the actual {@code Throwable} is not an instance of the given type.305 * @see AbstractThrowableAssert#hasCauseInstanceOf(Class)306 */​307 public ThrowableAssertAlternative<T> withCauseInstanceOf(Class<? extends Throwable> type) {308 delegate.hasCauseInstanceOf(type);309 return this;310 }311 /​**312 * Verifies that the cause of the actual {@code Throwable} is <b>exactly</​b> an instance of the given type.313 * <p>314 * Example:315 * <pre><code class='java'> Throwable throwable = new Throwable(new NullPointerException());316 *317 * /​/​ assertion will pass318 * assertThatExceptionOfType(Throwable.class)319 * .isThrownBy(() -&gt; {throw throwable;})320 * .withCauseExactlyInstanceOf(NullPointerException.class);321 *...

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...47 ThrowableAssertAlternative<InvalidTransactionException> alternative = assertThatExceptionOfType(48 InvalidTransactionException.class).isThrownBy(49 () -> validator.validateAndConvert(new JsonTransaction("12.3s43", "2018-07-17T09:59:51.312Z"),50 Instant.now()));51 alternative.withCauseInstanceOf(NumberFormatException.class);52 }5354 @Test()55 public void testUnparsableTransactionTimestamp() {56 TransactionValidator validator = new TransactionValidator();57 ThrowableAssertAlternative<InvalidTransactionException> alternative = assertThatExceptionOfType(58 InvalidTransactionException.class)59 .isThrownBy(() -> validator.validateAndConvert(60 new JsonTransaction("12.3343", "'2011-12-03T10:15:30+01:00[Europe/​Paris]'"),61 Instant.now()));62 alternative.withCauseInstanceOf(DateTimeParseException.class);63 }6465 @Test()66 public void testTransactionInThePast() {67 TransactionValidator validator = new TransactionValidator();68 assertThatExceptionOfType(TransactionInThePastException.class).isThrownBy(() -> validator69 .validateAndConvert(new JsonTransaction("12.3343", "2018-07-17T09:59:51.312Z"), Instant.now()));70 }7172 @Test()73 public void testTransactionInTheFuture() {74 TransactionValidator validator = new TransactionValidator();75 assertThatExceptionOfType(TransactionInTheFutureException.class).isThrownBy(() -> validator76 .validateAndConvert(new JsonTransaction("12.3343", "2118-07-17T09:59:51.312Z"), Instant.now())); ...

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withCauseInstanceOf

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1import org.assertj.core.api.ThrowableAssertAlternative;2import org.assertj.core.api.ThrowableAssertAlternativeBase;3import org.assertj.core.api.ThrowableAssertAlternativeBaseTest;4import org.junit.Test;5import static org.assertj.core.api.Assertions.assertThat;6public class Test1 extends ThrowableAssertAlternativeBaseTest {7 protected ThrowableAssertAlternativeBase<?> create_assertions() {8 return new ThrowableAssertAlternative<>(new Exception("boom!"));9 }10 public void test() {11 assertThat(new Exception("boom!")).isInstanceOf(Exception.class).hasMessage("boom!").hasCauseInstanceOf(NullPointerException.class);12 }13}

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withCauseInstanceOf

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1import org.assertj.core.api.ThrowableAssertAlternative;2import org.assertj.core.api.Assertions;3public class 1 {4 public static void main(String[] args) {5 ThrowableAssertAlternative<Throwable> throwableAssertAlternative = Assertions.assertThatThrownBy(() -> {6 throw new RuntimeException("test");7 });8 throwableAssertAlternative.withCauseInstanceOf(RuntimeException.class);9 }10}11 at org.assertj.core.api.ThrowableAssertAlternative.withCauseInstanceOf(ThrowableAssertAlternative.java:98)12 at 1.main(1.java:10)

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withCauseInstanceOf

Using AI Code Generation

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1import org.assertj.core.api.ThrowableAssertAlternative;2import org.assertj.core.api.ThrowableAssertAlternative.ThrowingCallable;3import org.assertj.core.api.Assertions;4import org.junit.Test;5public class Test1 {6 public void test1() {7 Assertions.assertThatThrownBy(new ThrowingCallable() {8 public void call() throws Throwable {9 throw new RuntimeException("test");10 }11 }).withCauseInstanceOf(RuntimeException.class);12 }13}14 at org.assertj.core.api.ThrowableAssertAlternative.assertHasCauseInstanceOf(ThrowableAssertAlternative.java:115)15 at org.assertj.core.api.ThrowableAssertAlternative.assertHasCauseInstanceOf(ThrowableAssertAlternative.java:111)16 at org.assertj.core.api.ThrowableAssertAlternative.withCauseInstanceOf(ThrowableAssertAlternative.java:103)17 at Test1.test1(Test1.java:15)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.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)23 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)24 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)25 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)26 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)27 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)28 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)29 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)30 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)31 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)32 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)33 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

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withCauseInstanceOf

Using AI Code Generation

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1import org.assertj.core.api.ThrowableAssertAlternative;2import org.junit.Test;3import static org.assertj.core.api.Assertions.assertThat;4import static org.assertj.core.api.Assertions.catchThrowable;5public class AssertJTest {6public void testWithCauseInstanceOf() {7Throwable throwable = catchThrowable(() -> {8throw new RuntimeException(new IllegalArgumentException());9});10ThrowableAssertAlternative<Throwable> throwableAssertAlternative = assertThat(throwable);11throwableAssertAlternative.withCauseInstanceOf(IllegalArgumentException.class);12}13}14import org.assertj.core.api.ThrowableAssertAlternative;15import org.junit.Test;16import static org.assertj.core.api.Assertions.assertThat;17import static org.assertj.core.api.Assertions.catchThrowable;18public class AssertJTest {19public void testWithCauseInstanceOf() {20Throwable throwable = catchThrowable(() -> {21throw new RuntimeException(new IllegalArgumentException());22});23ThrowableAssertAlternative<Throwable> throwableAssertAlternative = assertThat(throwable);24throwableAssertAlternative.withCauseInstanceOf(RuntimeException.class);25}26}27import org.assertj.core.api.ThrowableAssertAlternative;28import org.junit.Test;29import static org.assertj.core.api.Assertions.assertThat;30import static org.assertj.core.api.Assertions.catchThrowable;31public class AssertJTest {

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withCauseInstanceOf

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1import org.junit.Test;2import static org.assertj.core.api.Assertions.*;3public class Test1 {4 public void test() {5 assertThatThrownBy(() -> {6 throw new RuntimeException("test");7 }).withCauseInstanceOf(RuntimeException.class);8 }9}10 at org.junit.Assert.assertEquals(Assert.java:115)11 at org.junit.Assert.assertEquals(Assert.java:144)12 at org.assertj.core.api.ThrowableAssertAlternative.withCauseInstanceOf(ThrowableAssertAlternativ

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withCauseInstanceOf

Using AI Code Generation

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1import org.assertj.core.api.ThrowableAssertAlternative;2import org.junit.Test;3public class AssertJTest {4 public void testException() {5 ThrowableAssertAlternative<Throwable> exception = org.assertj.core.api.Assertions.assertThatThrownBy(() -> {6 throw new RuntimeException("Test Exception");7 });8 exception.withCauseInstanceOf(IndexOutOfBoundsException.class);9 }10}11 at AssertJTest.testException(AssertJTest.java:12)

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withCauseInstanceOf

Using AI Code Generation

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1import org.assertj.core.api.ThrowableAssertAlternative;2import org.junit.Test;3import static org.assertj.core.api.Assertions.assertThat;4public class AssertJTest {5 public void test1() {6 try {7 testMethod();8 } catch (Exception e) {9 assertThat(e).hasMessage("test").withCauseInstanceOf(Exception.class);10 }11 }12 public void testMethod() throws Exception {13 try {14 throw new Exception("test");15 } catch (Exception e) {16 throw new Exception("test", e);17 }18 }19}

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withCauseInstanceOf

Using AI Code Generation

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1import org.junit.Test;2import static org.assertj.core.api.Assertions.assertThat;3import java.util.Map;4import java.util.HashMap;5public class AssertJTest {6 public void testException() {7 Exception e = new Exception("exception message");8 e.initCause(new RuntimeException("runtime exception message"));9 Map<String, String> map = new HashMap<>();10 map.put("key", "value");11 assertThat(e).hasMessage("exception message").hasNoCause()12 .hasCauseInstanceOf(RuntimeException.class)13 .hasMessageStartingWith("exception").hasMessageContaining("message")14 .hasMessageEndingWith("message").hasMessageMatching(".*message")15 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")16 .hasMessageMatching(".*message").hasMessageMatching("exception message")17 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")18 .hasMessageMatching(".*message").hasMessageMatching("exception message")19 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")20 .hasMessageMatching(".*message").hasMessageMatching("exception message")21 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")22 .hasMessageMatching(".*message").hasMessageMatching("exception message")23 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")24 .hasMessageMatching(".*message").hasMessageMatching("exception message")25 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")26 .hasMessageMatching(".*message").hasMessageMatching("exception message")27 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")28 .hasMessageMatching(".*message").hasMessageMatching("exception message")29 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")30 .hasMessageMatching(".*message").hasMessageMatching("exception message")31 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")32 .hasMessageMatching(".*message").hasMessageMatching("exception message")33 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")34 .hasMessageMatching(".*message").hasMessageMatching("exception message")35 .hasMessageMatching(".*message.*").hasMessageMatching("exception.*")36 .hasMessageMatching(".*message").hasMessageMatching("exception message

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withCauseInstanceOf

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1import org.assertj.core.api.ThrowableAssertAlternative;2public class AssertJExample {3 public static void main(String[] args) {4 ThrowableAssertAlternative.assertThat(new RuntimeException("error"))5 .withCauseInstanceOf(RuntimeException.class);6 }7}8import org.assertj.core.api.ThrowableAssertAlternative;9public class AssertJExample {10 public static void main(String[] args) {11 ThrowableAssertAlternative.assertThat(new RuntimeException("error"))12 .withCauseInstanceOf(NullPointerException.class);13 }14}15 at org.junit.Assert.assertEquals(Assert.java:115)16 at org.junit.Assert.assertEquals(Assert.java:144)17 at org.assertj.core.api.ThrowableAssertAlternative.withCauseInstanceOf(ThrowableAssertAlternative.java:110)18 at AssertJExample.main(AssertJExample.java:7)19org.assertj.core.api.ThrowableAssertAlternative.withCauseInstanceOf(ThrowableAssertAlternative.java:110)20withCauseInstanceOfInstanceOf(Class<?> type)21withCauseInstanceOfInstanceOf(Class<?> type)22withCauseInstanceOfInstanceOf(Class<?> type, String description, Object... args)23withCauseInstanceOfInstanceOf(Class<?> type, String description, Object... args)

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