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

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

Source:ThrowableAssertAlternative.java

...92   * // This assertion succeeds:93   * 94   * assertThatExceptionOfType(Throwable.class)95   *           .isThrownBy(() -&gt; {throw wrappingException;})96   *           .withCause(illegalArgumentException);97   *98   * // These assertions fail:99   * 100   * assertThatExceptionOfType(Throwable.class)101   *           .isThrownBy(() -&gt; {throw wrappingException;})102   *           .withCause(new IllegalArgumentException("bad arg"));103   *           104   * assertThatExceptionOfType(Throwable.class)105   *           .isThrownBy(() -&gt; {throw wrappingException;})106   *           .withCause(new NullPointerException());107   *           108   * assertThatExceptionOfType(Throwable.class)109   *           .isThrownBy(() -&gt; {throw wrappingException;})110   *           .withCause(null);</code></pre>111   * 112   * @param cause the expected cause.113   * @return this assertion object.114   * @throws AssertionError if the actual {@code Throwable} is {@code null}.115   * @throws AssertionError if the actual {@code Throwable} has not the given cause.116   * @see AbstractThrowableAssert#hasCause(Throwable)117   */118  public ThrowableAssertAlternative<T> withCause(Throwable cause) {119    delegate.hasCause(cause);120    return this;121  }122  /**123   * Verifies that the actual {@code Throwable} does not have a cause.124   * <p>125   * Example:126   * <pre><code class='java'> IllegalArgumentException exception = new IllegalArgumentException();127   *128   * // This assertion succeeds:129   * assertThatExceptionOfType(IllegalArgumentException.class)130   *           .isThrownBy(() -&gt; {throw exception;})131   *           .withNoCause();132   *133   * // These assertion fails:134   * Throwable illegalArgumentException = new Throwable(exception); 135   * assertThatExceptionOfType(Throwable.class)136   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})137   *           .withNoCause();</code></pre>138   *139   * @return this assertion object.140   * @throws AssertionError if the actual {@code Throwable} is {@code null}.141   * @throws AssertionError if the actual {@code Throwable} has a cause.142   * @see AbstractThrowableAssert#hasNoCause()143   */144  public ThrowableAssertAlternative<T> withNoCause() {145    delegate.hasNoCause();146    return this;147  }148  /**149   * Verifies that the message of the actual {@code Throwable} starts with the given description.150   * <p>151   * Examples:152   * <pre><code class='java'> Throwable illegalArgumentException = new IllegalArgumentException("wrong amount 123");153   *154   * // assertion will pass155   * assertThatExceptionOfType(Throwable.class)156   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})157   *           .withMessageStartingWith("wrong amount");158   *159   * // assertion will fail160   * assertThatExceptionOfType(Throwable.class)161   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})162   *           .withMessageStartingWith("right amount");</code></pre>163   *164   * @param description the description expected to start the actual {@code Throwable}'s message.165   * @return this assertion object.166   * @throws AssertionError if the actual {@code Throwable} is {@code null}.167   * @throws AssertionError if the message of the actual {@code Throwable} does not start with the given description.168   * @see AbstractThrowableAssert#hasMessageStartingWith(String)169   */170  public ThrowableAssertAlternative<T> withMessageStartingWith(String description) {171    delegate.hasMessageStartingWith(description);172    return this;173  }174  /**175   * Verifies that the message of the actual {@code Throwable} contains with the given description.176   * <p>177   * Examples:178   * <pre><code class='java'> Throwable illegalArgumentException = new IllegalArgumentException("wrong amount 123");179   *180   * // assertion will pass181   * assertThatExceptionOfType(Throwable.class)182   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})183   *           .withMessageContaining("amount");184   *185   * // assertion will fail186   * assertThatExceptionOfType(Throwable.class)187   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})188   *           .withMessageContaining("456");</code></pre>189   *190   * @param description the description expected to be contained in the actual {@code Throwable}'s message.191   * @return this assertion object.192   * @throws AssertionError if the actual {@code Throwable} is {@code null}.193   * @throws AssertionError if the message of the actual {@code Throwable} does not contain the given description.194   * @see AbstractThrowableAssert#hasMessageContaining(String)195   */196  public ThrowableAssertAlternative<T> withMessageContaining(String description) {197    delegate.hasMessageContaining(description);198    return this;199  }200  /**201   * Verifies that the stack trace of the actual {@code Throwable} contains with the given description.202   * <p>203   * Examples:204   * <pre><code class='java'> Throwable illegalArgumentException = new IllegalArgumentException("wrong amount 123");205   *206   * // assertion will pass207   * assertThatExceptionOfType(Throwable.class)208   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})209   *           .withStackTraceContaining("amount");210   *211   * // assertion will fail212   * assertThatExceptionOfType(Throwable.class)213   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})214   *           .withStackTraceContaining("456");</code></pre>215   *216   * @param description the description expected to be contained in the actual {@code Throwable}'s stack trace.217   * @return this assertion object.218   * @throws AssertionError if the actual {@code Throwable} is {@code null}.219   * @throws AssertionError if the stack trace of the actual {@code Throwable} does not contain the given description.220   * @see AbstractThrowableAssert#hasStackTraceContaining(String)221   */222  public ThrowableAssertAlternative<T> withStackTraceContaining(String description) {223    delegate.hasStackTraceContaining(description);224    return this;225  }226  227  /**228   * Verifies that the message of the actual {@code Throwable} matches with the given regular expression.229   * <p>230   * Examples:231   * <pre><code class='java'> Throwable illegalArgumentException = new IllegalArgumentException("wrong amount 123");232   *233   * // assertion will pass234   * assertThatExceptionOfType(Throwable.class)235   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})236   *           .withMessageMatching("wrong amount [0-9]*");237   *238   * // assertion will fail239   * assertThatExceptionOfType(Throwable.class)240   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})241   *           .withMessageMatching("wrong amount [0-9]* euros");</code></pre>242   *243   * @param regex the regular expression of value expected to be matched the actual {@code Throwable}'s message.244   * @return this assertion object.245   * @throws AssertionError if the actual {@code Throwable} is {@code null}.246   * @throws AssertionError if the message of the actual {@code Throwable} does not match the given regular expression.247   * @throws NullPointerException if the regex is null248   * @see AbstractThrowableAssert#hasMessageMatching(String)249   */250  public ThrowableAssertAlternative<T> withMessageMatching(String regex) {251    delegate.hasMessageMatching(regex);252    return this;253  }254  /**255   * Verifies that the message of the actual {@code Throwable} ends with the given description.256   * <p>257   * Examples:258   * <pre><code class='java'> Throwable illegalArgumentException = new IllegalArgumentException("wrong amount 123");259   *260   * // assertion will pass261   * assertThatExceptionOfType(Throwable.class)262   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})263   *           .withMessageEndingWith("123");264   *265   * // assertion will fail266   * assertThatExceptionOfType(Throwable.class)267   *           .isThrownBy(() -&gt; {throw illegalArgumentException;})268   *           .withMessageEndingWith("456");</code></pre>269   *270   * @param description the description expected to end the actual {@code Throwable}'s message.271   * @return this assertion object.272   * @throws AssertionError if the actual {@code Throwable} is {@code null}.273   * @throws AssertionError if the message of the actual {@code Throwable} does not end with the given description.274   * @see AbstractThrowableAssert#hasMessageEndingWith(String)275   */276  public ThrowableAssertAlternative<T> withMessageEndingWith(String description) {277    delegate.hasMessageEndingWith(description);278    return this;279  }280  /**281   * Verifies that the cause of the actual {@code Throwable} is an instance of the given type.282   * <p>283   * Example:284   * <pre><code class='java'> Throwable throwable = new Throwable(new NullPointerException());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   *322   * // assertions will fail (even if NullPointerException is a RuntimeException since we want an exact match)323   * assertThatExceptionOfType(Throwable.class)324   *           .isThrownBy(() -&gt; {throw throwable;})325   *           .withCauseExactlyInstanceOf(RuntimeException.class);326   * assertThatExceptionOfType(Throwable.class)327   *           .isThrownBy(() -&gt; {throw throwable;})328   *           .withCauseExactlyInstanceOf(IllegalArgumentException.class);</code></pre>329   *330   * @param type the expected cause type.331   * @return this assertion object.332   * @throws NullPointerException if given type is {@code null}.333   * @throws AssertionError if the actual {@code Throwable} is {@code null}.334   * @throws AssertionError if the actual {@code Throwable} has no cause.335   * @throws AssertionError if the cause of the actual {@code Throwable} is not <b>exactly</b> an instance of the given336   *           type.337   * @see AbstractThrowableAssert#hasCauseExactlyInstanceOf(Class)          338   */339  public ThrowableAssertAlternative<T> withCauseExactlyInstanceOf(Class<? extends Throwable> type) {340    delegate.hasCauseExactlyInstanceOf(type);341    return this;342  }343  /**344   * Verifies that the root cause of the actual {@code Throwable} is an instance of the given type.345   * <p>346   * Example:347   * <pre><code class='java'> Throwable throwable = new Throwable(348   *                            new IllegalStateException(349   *                                new NullPointerException()));350   *351   * // assertion will pass352   * assertThatExceptionOfType(Throwable.class)353   *           .isThrownBy(() -&gt; {throw throwable;})...

withCause

Using AI Code Generation

1package com.example;2import org.junit.jupiter.api.Test;3import static org.assertj.core.api.Assertions.assertThat;4import static org.assertj.core.api.Assertions.assertThatExceptionOfType;5public class AssertJTest {6    public void test() {7        assertThatExceptionOfType(RuntimeException.class)8                .isThrownBy(() -> {9                    throw new RuntimeException("test");10                })11                .withCause(new RuntimeException("test"));12    }13}14package com.example;15import org.hamcrest.Matcher;16import org.junit.jupiter.api.Test;17import static org.assertj.core.api.Assertions.assertThat;18import static org.assertj.core.api.Assertions.assertThatExceptionOfType;19public class AssertJTestWithCauseMatcher {20    public void test() {21        assertThatExceptionOfType(RuntimeException.class)22                .isThrownBy(() -> {23                    throw new RuntimeException("test");24                })25                .withCause(new RuntimeExceptionMatcher("test"));26    }27    private static class RuntimeExceptionMatcher extends RuntimeException implements Matcher<Throwable> {28        public RuntimeExceptionMatcher(String message) {29            super(message);30        }31        public boolean matches(Throwable item) {32            return item instanceof RuntimeException && item.getMessage().equals(getMessage());33        }34        public void describeTo(org.hamcrest.Description description) {35            description.appendText("RuntimeException with message: " + getMessage());36        }37    }38}

withCause

Using AI Code Generation

1assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");2assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");3assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");4assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");5assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");6assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");7assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");8assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");9assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");10assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");11assertThatThrownBy(() -> {throw new Exception("some message");}).withCauseInstanceOf(Exception.class).withMessage("some message");

withCause

Using AI Code Generation

1Throwable throwable = new Throwable("This is a throwable");2String expectedCauseMessage = "This is a cause";3Throwable cause = new Throwable(expectedCauseMessage);4throwable.initCause(cause);5assertThat(throwable).hasMessage("This is a throwable").withCause(cause);6assertThat(throwable).hasMessage("This is a throwable").withCause(expectedCauseMessage);7assertThat(throwable).hasMessage("This is a throwable").withCauseInstanceOf(Throwable.class);8assertThat(throwable).hasMessage("This is a throwable").withCauseInstanceOf(RuntimeException.class);9assertThat(throwable).hasMessage("This is a throwable").withCauseExactlyInstanceOf(Throwable.class);10assertThat(throwable).hasMessage("This is a throwable").withCauseExactlyInstanceOf(RuntimeException.class);11assertThat(throwable).hasMessage("This is a throwable").withCauseMessage("This is a cause");12assertThat(throwable).hasMessage("This is a throwable").withCauseMessage("This is a cause");13assertThat(throwable).hasMessage("This is a throwable").withCauseMessageMatching("This is a cause");14assertThat(throwable).hasMessage("This is a throwable").withCauseMessageMatching("This is a cause");15assertThat(throwable).hasMessage("This is a throwable").withCauseMessageContaining("This is a cause");16assertThat(throwable).hasMessage("This is a throwable").withCauseMessageContaining("This is a cause");17assertThat(throwable).hasMessage("This is a throwable").withCauseMessageStartingWith("This is a cause");18assertThat(throwable).hasMessage("This is a throwable").withCauseMessageStartingWith("This is a cause");19assertThat(throwable).hasMessage("This is a throwable").withCauseMessageEndingWith("This is a cause");20assertThat(throwable).hasMessage("This is a throwable").withCauseMessageEndingWith("This is a cause");21assertThat(throwable).hasMessage("This is a throwable").withCauseMessageNotContaining("This is a cause");22assertThat(throwable).hasMessage("This is a throwable").withCauseMessageNotContaining("This is a cause");23assertThat(throwable).hasMessage("This is a throwable").withCauseMessageNotStartingWith("This is a cause");24assertThat(throwable).hasMessage("This is a throwable").withCauseMessageNotStarting

withCause

Using AI Code Generation

1final Throwable cause = new Throwable("cause");2final Throwable throwable = new Throwable("throwable", cause);3assertThat(throwable).hasCause(cause);4final Throwable cause = new Throwable("cause");5final Throwable throwable = new Throwable("throwable", cause);6assertThat(throwable).hasCause(new Throwable("cause"));7final Throwable cause = new Throwable("cause");8final Throwable throwable = new Throwable("throwable", cause);9assertThat(throwable).hasCause(new Throwable("other cause"));10final Throwable cause = new Throwable("cause");11final Throwable throwable = new Throwable("throwable", cause);12assertThat(throwable).hasCause(new Throwable("cause", new Throwable("other cause")));13final Throwable cause = new Throwable("cause");14final Throwable throwable = new Throwable("throwable", cause);15assertThat(throwable).hasCause(null);16final Throwable throwable = new Throwable("throwable");17assertThat(throwable).hasCause(null);18final Throwable cause = new Throwable("cause");

withCause

Using AI Code Generation

1Throwable throwable = new Throwable("My Exception");2ThrowableAssertAlternative throwableAssertAlternative = Assertions.assertThat(throwable);3ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCause(new Throwable("My Cause"));4ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseInstanceOf(Throwable.class);5ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage("My Cause");6ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessageContaining("My Cause");7ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessageMatching("My Cause");8ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessageStartingWith("My Cause");9ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessageEndingWith("My Cause");10ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(Condition<Throwable> condition);11ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(Predicate<Throwable> predicate);12ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(Function<Throwable, String> function);13ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(String expectedDescription, Object... args);14ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(String expectedDescription, Object[] args);15ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(String expectedDescription, Object[] args, Condition<Throwable> condition);16ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(String expectedDescription, Object[] args, Predicate<Throwable> predicate);17ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(String expectedDescription, Object[] args, Function<Throwable, String> function);18ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(String expectedDescription, Object[] args, Function<Throwable, String> function, Condition<Throwable> condition);19ThrowableAssertAlternative throwableAssertAlternativeWithCause = throwableAssertAlternative.withCauseMessage(String expectedDescription, Object[] args, Function<Throwable, String> function, Predicate<Throwable> predicate);

withCause

Using AI Code Generation

1import org.assertj.core.api.ThrowableAssertAlternative2import org.junit.jupiter.api.Test3class AssertJTest {4    fun `should throw exception`() {5        val exception = assertThrows<IllegalArgumentException> {6            throw IllegalArgumentException("error")7        }8        assertThat(exception).hasMessage("error")9    }10    fun `should throw exception with cause`() {11        val exception = assertThrows<IllegalArgumentException> {12            throw IllegalArgumentException("error", IllegalStateException("cause"))13        }14        assertThat(exception).hasMessage("error")15        assertThat(exception).withCause(IllegalStateException::class.java).hasMessage("cause")16    }17}18	at org.assertj.core.internal.Throwables.assertHasMessage(Throwables.java:105)19	at org.assertj.core.api.ThrowableAssertAlternative.hasMessage(ThrowableAssertAlternative.java:83)20	at com.example.demo.AssertJTest.should throw exception with cause(AssertJTest.kt:18)21	at org.assertj.core.internal.Throwables.assertHasMessage(Throwables.java:105)22	at org.assertj.core.api.ThrowableAssertAlternative.hasMessage(ThrowableAssertAlternative.java:83)23	at com.example.demo.AssertJTest.should throw exception with cause(AssertJTest.kt:18)24	at org.assertj.core.internal.Throwables.assertHasMessage(Throwables.java:105)25	at org.assertj.core.api.ThrowableAssertAlternative.hasMessage(ThrowableAssertAlternative.java:83)26	at com.example.demo.AssertJTest.should throw exception with cause(AssertJTest.kt:18)27	at org.assertj.core.internal.Throwables.assertHasMessage(Throwables.java:105)28	at org.assertj.core.api.ThrowableAssertAlternative.hasMessage(ThrowableAssertAlternative.java:83)

withCause

Using AI Code Generation

1String[] lines = new String[] {2    " * [C1](#C1) Violation message 1",3    " * [C2](#C2) Violation message 2",4    " * [tag1](#tag1)",5    " * [tag2](#tag2)",6    " * [p1](#p1)",7    " * [p2](#p2)",8    " * [Checkstyle Version](#Checkstyle_Version)",9};10String[] expected = new String[] {11    " * [C1](#C1) Violation message 1",12    " * [C2](#C2) Violation message 2",13    " * [tag1](#tag1)",14    " * [tag2](#tag2)",15    " * [p1](#p1)",16    " * [p2](#p2)",17    " * [Checkstyle Version](#Checkstyle_Version)",18};19ArrayAssert<String> assert = assertThat(lines);20assert.usingElementComparator(Comparator.naturalOrder()).containsExactly(expected);21String[] lines = new String[] {

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