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How to use haveCause method of io.kotest.matchers.throwable.matchers class

Best Kotest code snippet using io.kotest.matchers.throwable.matchers.haveCause

matchers.kt

Source:matchers.kt

...13    "Throwable should not have message ${message.show().value}"14  )15}16fun Throwable.shouldHaveCause(block: (Throwable) -> Unit = {}) {17  this should haveCause()18  block.invoke(cause!!)19}20fun Throwable.shouldNotHaveCause() = this shouldNot haveCause()21fun haveCause() = object : Matcher<Throwable> {22  override fun test(value: Throwable) = resultForThrowable(value.cause)23}24inline fun <reified T : Throwable> Throwable.shouldHaveCauseInstanceOf() = this should haveCauseInstanceOf<T>()25inline fun <reified T : Throwable> Throwable.shouldNotHaveCauseInstanceOf() = this shouldNot haveCauseInstanceOf<T>()26inline fun <reified T : Throwable> haveCauseInstanceOf() = object : Matcher<Throwable> {27  override fun test(value: Throwable) = when {28    value.cause == null -> resultForThrowable(value.cause)29    else -> MatcherResult(30        value.cause is T,31        "Throwable cause should be of type ${T::class}, but instead got ${value::class}",32        "Throwable cause should be of type ${T::class}"33    )34  }35}36inline fun <reified T : Throwable> Throwable.shouldHaveCauseOfType() = this should haveCauseOfType<T>()37inline fun <reified T : Throwable> Throwable.shouldNotHaveCauseOfType() = this shouldNot haveCauseOfType<T>()38inline fun <reified T : Throwable> haveCauseOfType() = object : Matcher<Throwable> {39  override fun test(value: Throwable) = when (value.cause) {40      null -> resultForThrowable(value.cause)41      else -> MatcherResult(42         value.cause!!::class == T::class,43         "Throwable cause should be of type ${T::class}, but instead got ${value::class}",44         "Throwable cause should be of type ${T::class}"45      )46  }47}48@PublishedApi49internal fun resultForThrowable(value: Throwable?) = MatcherResult(50    value != null,51    "Throwable should have a cause",52    "Throwable should not have a cause"...

haveCause

Using AI Code Generation

1package io.kotest.matchers.throwable.matchers; import org.junit.Test; import static io.kotest.matchers.throwable.matchers.haveCause; import static org.junit.Assert.assertThat; public class HaveCauseTest { @Test public void testHaveCauseWithCause() { try { throw new RuntimeException(new IllegalArgumentException("some message")); } catch (RuntimeException e) { assertThat(e, haveCause(IllegalArgumentException.class)); } } @Test public void testHaveCauseWithCauseAndMessage() { try { throw new RuntimeException(new IllegalArgumentException("some message")); } catch (RuntimeException e) { assertThat(e, haveCause(IllegalArgumentException.class, "some message")); } } }2HaveCauseTest > testHaveCauseWithCause() PASSED HaveCauseTest > testHaveCauseWithCauseAndMessage() PASSED3HaveCauseTest > testHaveCauseWithCauseAndMessage() FAILED java.lang.AssertionError: exception should have cause: java.lang.IllegalArgumentException: some message at io.kotest.matchers.throwable.matchers.HaveCauseTest.testHaveCauseWithCauseAndMessage(HaveCauseTest.java:17) 1 test completed, 1 failed4HaveCauseTest > testHaveCauseWithCauseAndMessage() FAILED java.lang.AssertionError: exception should have cause: java.lang.IllegalArgumentException: some message at io.kotest.matchers.throwable.matchers.HaveCauseTest.testHaveCauseWithCauseAndMessage(HaveCauseTest.java:17)5HaveCauseTest > testHaveCauseWithCause() PASSED HaveCauseTest > testHaveCauseWithCauseAndMessage() PASSED6HaveCauseTest > testHaveCauseWithCauseAndMessage() FAILED java.lang.AssertionError: exception should have cause: java.lang.IllegalArgumentException: some message at io.kotest.matchers.throwable.matchers.HaveCauseTest.testHaveCauseWithCauseAndMessage(HaveCauseTest.java:17)7HaveCauseTest > testHaveCauseWithCauseAndMessage() FAILED java.lang.AssertionError: exception should have cause: java.lang.IllegalArgumentException: some message at io.kotest.matchers.throwable.matchers.HaveCauseTest.testHaveCauseWithCauseAndMessage(HaveCauseTest.java:17) 1 test completed, 1 failed8HaveCauseTest > testHaveCauseWithCause() PASSED HaveCauseTest > testHaveCauseWithCauseAndMessage() PASSED9HaveCauseTest > testHaveCauseWithCauseAndMessage() FAILED java.lang.AssertionError: exception

haveCause

Using AI Code Generation

1assertThat(exception).hasCause<IllegalArgumentException>()2assertThat(exception).hasCause<IllegalArgumentException> { message shouldBe "message" }3assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()4assertThat(exception).hasCauseInstanceOf<IllegalArgumentException> { message shouldBe "message" }5assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()6assertThat(exception).hasCauseInstanceOf<IllegalArgumentException> { message shouldBe "message" }7assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()8assertThat(exception).hasCauseInstanceOf<IllegalArgumentException> { message shouldBe "message" }9assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()10assertThat(exception).hasCauseInstanceOf<IllegalArgumentException> { message shouldBe "message" }11assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()12assertThat(exception).hasCauseInstanceOf<IllegalArgumentException> { message shouldBe "message" }13assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()14assertThat(exception).hasCauseInstanceOf<IllegalArgumentException> { message shouldBe "message" }15assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()16assertThat(exception).hasCauseInstanceOf<IllegalArgumentException> { message shouldBe "message" }17assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()18assertThat(exception).hasCauseInstanceOf<IllegalArgumentException> { message shouldBe "message" }19assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()20assertThat(exception).hasCauseInstanceOf<IllegalArgumentException> { message shouldBe "message" }21assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>()22assertThat(exception).hasCauseInstanceOf<IllegalArgumentException>

haveCause

Using AI Code Generation

1val ex = assertThrows<IllegalArgumentException> {2throw IllegalArgumentException("Invalid input")3}4ex should haveCause<IllegalStateException> {5message should be("Invalid state")6}7val ex = assertThrows<IllegalArgumentException> {8throw IllegalArgumentException("Invalid input")9}10ex should haveCause<IllegalStateException> {11message should be("Invalid state")12}13val ex = assertThrows<IllegalArgumentException> {14throw IllegalArgumentException("Invalid input")15}16ex should haveCause<IllegalStateException> {17message should be("Invalid state")18}19val ex = assertThrows<IllegalArgumentException> {20throw IllegalArgumentException("Invalid input")21}22ex should haveCause<IllegalStateException> {23message should be("Invalid state")24}25val ex = assertThrows<IllegalArgumentException> {26throw IllegalArgumentException("Invalid input")27}28ex should haveCause<IllegalStateException> {29message should be("Invalid state")30}31val ex = assertThrows<IllegalArgumentException> {32throw IllegalArgumentException("Invalid input")33}34ex should haveCause<IllegalStateException> {35message should be("Invalid state")36}37val ex = assertThrows<IllegalArgumentException> {38throw IllegalArgumentException("Invalid input")39}40ex should haveCause<IllegalStateException> {41message should be("Invalid state")42}43val ex = assertThrows<IllegalArgumentException> {44throw IllegalArgumentException("Invalid input")45}46ex should haveCause<IllegalStateException> {47message should be("Invalid state")48}49val ex = assertThrows<IllegalArgumentException> {50throw IllegalArgumentException("Invalid input")51}52ex should haveCause<IllegalStateException> {53message should be("Invalid state")54}55val ex = assertThrows<IllegalArgumentException> {56throw IllegalArgumentException("Invalid input")57}

haveCause

Using AI Code Generation

1@DisplayName ( "should throw exception when the cause is not null" ) @Test fun shouldThrowExceptionWhenCauseIsNotNull () { shouldThrow < IllegalArgumentException > { throw IllegalArgumentException ( "exception message" , RuntimeException ( "cause message" )) }. haveCause < RuntimeException > { message shouldBe "cause message" } }2@DisplayName ( "should throw exception when the message is not null" ) @Test fun shouldThrowExceptionWhenMessageIsNotNull () { shouldThrow < IllegalArgumentException > { throw IllegalArgumentException ( "exception message" , RuntimeException ( "cause message" )) }. haveMessage ( "exception message" ) }3@DisplayName ( "should throw exception when the message contains the string" ) @Test fun shouldThrowExceptionWhenMessageContainsTheString () { shouldThrow < IllegalArgumentException > { throw IllegalArgumentException ( "exception message" , RuntimeException ( "cause message" )) }. haveMessageContaining ( "exception" ) }4@DisplayName ( "should throw exception when the message starts with the string" ) @Test fun shouldThrowExceptionWhenMessageStartsWithTheString () { shouldThrow < IllegalArgumentException > { throw IllegalArgumentException ( "exception message" , RuntimeException ( "cause message" )) }. haveMessageStartingWith ( "exception" ) }5@DisplayName ( "should throw exception when the message ends with the string" ) @Test fun shouldThrowExceptionWhenMessageEndsWithTheString () { shouldThrow < IllegalArgumentException > { throw IllegalArgumentException ( "exception message" , RuntimeException ( "cause message" )) }. haveMessageEndingWith ( "message" ) }6@DisplayName ( "should throw exception when the message matches the regex" ) @Test fun shouldThrowExceptionWhenMessageMatchesTheRegex () { shouldThrow < IllegalArgumentException > { throw IllegalArgumentException ( "exception message" , RuntimeException ( "cause message" )) }. haveMessageMatching ( "exception" . toRegex ()) }7@DisplayName ( "should throw

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