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

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

Source:ThrowableAssertAlternative.java

...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   *...

Source:TransactionValidatorTest.java

...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()));
...

withCauseInstanceOf

Using AI Code Generation

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}

withCauseInstanceOf

Using AI Code Generation

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)

withCauseInstanceOf

Using AI Code Generation

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)

withCauseInstanceOf

Using AI Code Generation

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 {

withCauseInstanceOf

Using AI Code Generation

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

withCauseInstanceOf

Using AI Code Generation

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)

withCauseInstanceOf

Using AI Code Generation

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}

withCauseInstanceOf

Using AI Code Generation

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

withCauseInstanceOf

Using AI Code Generation

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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