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How to use Throwable.shouldNotHaveCause method of io.kotest.matchers.throwable.matchers class

Best Kotest code snippet using io.kotest.matchers.throwable.matchers.Throwable.shouldNotHaveCause

ThrowableMatchersTest.kt

Source:ThrowableMatchersTest.kt

1package com.sksamuel.kotest.matchers.throwable2import io.kotest.assertions.throwables.shouldThrow3import io.kotest.assertions.throwables.shouldThrowAny4import io.kotest.assertions.throwables.shouldThrowExactly5import io.kotest.assertions.throwables.shouldThrowWithMessage6import io.kotest.core.spec.style.FreeSpec7import io.kotest.matchers.throwable.shouldHaveCause8import io.kotest.matchers.throwable.shouldHaveCauseInstanceOf9import io.kotest.matchers.throwable.shouldHaveCauseOfType10import io.kotest.matchers.throwable.shouldHaveMessage11import io.kotest.matchers.throwable.shouldNotHaveCause12import io.kotest.matchers.throwable.shouldNotHaveCauseInstanceOf13import io.kotest.matchers.throwable.shouldNotHaveCauseOfType14import io.kotest.matchers.throwable.shouldNotHaveMessage15import java.io.FileNotFoundException16import java.io.IOException17class ThrowableMatchersTest : FreeSpec() {18   init {19      "shouldThrowAny" - {20         "shouldHaveMessage" {21            shouldThrowAny { throw FileNotFoundException("this_file.txt not found") } shouldHaveMessage "this_file.txt not found"22            shouldThrowAny { throw TestException() } shouldHaveMessage "This is a test exception"23            shouldThrowAny { throw CompleteTestException() } shouldHaveMessage "This is a complete test exception"24         }25         "shouldNotHaveMessage" {26            shouldThrowAny { throw FileNotFoundException("this_file.txt not found") } shouldNotHaveMessage "random message"27            shouldThrowAny { throw TestException() } shouldNotHaveMessage "This is a complete test exception"28            shouldThrowAny { throw CompleteTestException() } shouldNotHaveMessage "This is a test exception"29         }30         "shouldHaveCause" {31            shouldThrowAny { throw CompleteTestException() }.shouldHaveCause()32            shouldThrowAny { throw CompleteTestException() }.shouldHaveCause {33               it shouldHaveMessage "file.txt not found"34            }35         }36         "shouldNotHaveCause" {37            shouldThrowAny { throw TestException() }.shouldNotHaveCause()38            shouldThrowAny { throw FileNotFoundException("this_file.txt not found") }.shouldNotHaveCause()39         }40         "shouldHaveCauseInstanceOf" {41            shouldThrowAny { throw CompleteTestException() }.shouldHaveCauseInstanceOf<FileNotFoundException>()42            shouldThrowAny { throw CompleteTestException() }.shouldHaveCauseInstanceOf<IOException>()43         }44         "shouldNotHaveCauseInstanceOf" {45            shouldThrowAny { throw CompleteTestException() }.shouldNotHaveCauseInstanceOf<TestException>()46         }47         "shouldHaveCauseOfType" {48            shouldThrowAny { throw CompleteTestException() }.shouldHaveCauseOfType<FileNotFoundException>()49         }50         "shouldNotHaveCauseOfType" {51            shouldThrowAny { throw CompleteTestException() }.shouldNotHaveCauseOfType<IOException>()52         }53      }54      "shouldThrow" - {55         "shouldHaveMessage" {56            shouldThrow<IOException> { throw FileNotFoundException("this_file.txt not found") } shouldHaveMessage "this_file.txt not found"57            shouldThrow<TestException> { throw TestException() } shouldHaveMessage "This is a test exception"58            shouldThrow<CompleteTestException> { throw CompleteTestException() } shouldHaveMessage "This is a complete test exception"59            shouldThrow<AssertionError> { TestException() shouldHaveMessage "foo" }60               .shouldHaveMessage(61                  """Throwable should have message:62"foo"63Actual was:64"This is a test exception"65expected:<"foo"> but was:<"This is a test exception">"""66               )67         }68         "shouldNotHaveMessage" {69            shouldThrow<IOException> { throw FileNotFoundException("this_file.txt not found") } shouldNotHaveMessage "random message"70            shouldThrow<TestException> { throw TestException() } shouldNotHaveMessage "This is a complete test exception"71            shouldThrow<CompleteTestException> { throw CompleteTestException() } shouldNotHaveMessage "This is a test exception"72            shouldThrow<AssertionError> { TestException() shouldNotHaveMessage "This is a test exception" }73               .shouldHaveMessage("Throwable should not have message:\n\"This is a test exception\"")74         }75         "shouldHaveCause" {76            shouldThrow<CompleteTestException> { throw CompleteTestException() }.shouldHaveCause()77            shouldThrow<CompleteTestException> { throw CompleteTestException() }.shouldHaveCause {78               it shouldHaveMessage "file.txt not found"79            }80            shouldThrow<AssertionError> { TestException().shouldHaveCause() }81               .shouldHaveMessage("Throwable should have a cause")82         }83         "shouldNotHaveCause" {84            shouldThrow<TestException> { throw TestException() }.shouldNotHaveCause()85            shouldThrow<IOException> { throw FileNotFoundException("this_file.txt not found") }.shouldNotHaveCause()86            shouldThrow<AssertionError> { CompleteTestException().shouldNotHaveCause() }87               .shouldHaveMessage("Throwable should not have a cause")88         }89         "shouldHaveCauseInstanceOf" {90            shouldThrow<CompleteTestException> { throw CompleteTestException() }.shouldHaveCauseInstanceOf<FileNotFoundException>()91            shouldThrow<CompleteTestException> { throw CompleteTestException() }.shouldHaveCauseInstanceOf<IOException>()92            shouldThrow<AssertionError> { CompleteTestException().shouldHaveCauseInstanceOf<RuntimeException>() }93               .shouldHaveMessage("Throwable cause should be of type java.lang.RuntimeException or it's descendant, but instead got java.io.FileNotFoundException")94         }95         "shouldNotHaveCauseInstanceOf" {96            shouldThrow<CompleteTestException> { throw CompleteTestException() }.shouldNotHaveCauseInstanceOf<TestException>()97            shouldThrow<AssertionError> { CompleteTestException().shouldNotHaveCauseInstanceOf<FileNotFoundException>() }98               .shouldHaveMessage("Throwable cause should not be of type java.io.FileNotFoundException or it's descendant")99         }100         "shouldHaveCauseOfType" {101            shouldThrow<CompleteTestException> { throw CompleteTestException() }.shouldHaveCauseOfType<FileNotFoundException>()102            shouldThrow<AssertionError> { CompleteTestException().shouldHaveCauseOfType<RuntimeException>() }103               .shouldHaveMessage("Throwable cause should be of type java.lang.RuntimeException, but instead got java.io.FileNotFoundException")104         }105         "shouldNotHaveCauseOfType" {106            shouldThrow<CompleteTestException> { throw CompleteTestException() }.shouldNotHaveCauseOfType<IOException>()107            shouldThrow<AssertionError> { CompleteTestException().shouldNotHaveCauseOfType<FileNotFoundException>() }108               .shouldHaveMessage("Throwable cause should not be of type java.io.FileNotFoundException")109         }110      }111      "shouldThrowExactly" - {112         "shouldHaveMessage" {113            shouldThrowExactly<FileNotFoundException> { throw FileNotFoundException("this_file.txt not found") } shouldHaveMessage "this_file.txt not found"114            shouldThrowExactly<TestException> { throw TestException() } shouldHaveMessage "This is a test exception"115            shouldThrowExactly<CompleteTestException> { throw CompleteTestException() } shouldHaveMessage "This is a complete test exception"116         }117         "shouldNotHaveMessage" {118            shouldThrowExactly<FileNotFoundException> { throw FileNotFoundException("this_file.txt not found") } shouldNotHaveMessage "random message"119            shouldThrowExactly<TestException> { throw TestException() } shouldNotHaveMessage "This is a complete test exception"120            shouldThrowExactly<CompleteTestException> { throw CompleteTestException() } shouldNotHaveMessage "This is a test exception"121         }122         "shouldHaveCause" {123            shouldThrowExactly<CompleteTestException> { throw CompleteTestException() }.shouldHaveCause()124            shouldThrowExactly<CompleteTestException> { throw CompleteTestException() }.shouldHaveCause {125               it shouldHaveMessage "file.txt not found"126            }127         }128         "shouldNotHaveCause" {129            shouldThrowExactly<TestException> { throw TestException() }.shouldNotHaveCause()130            shouldThrowExactly<FileNotFoundException> { throw FileNotFoundException("this_file.txt not found") }.shouldNotHaveCause()131         }132         "shouldHaveCauseInstanceOf" {133            shouldThrowExactly<CompleteTestException> { throw CompleteTestException() }.shouldHaveCauseInstanceOf<FileNotFoundException>()134            shouldThrowExactly<CompleteTestException> { throw CompleteTestException() }.shouldHaveCauseInstanceOf<IOException>()135         }136         "shouldNotHaveCauseInstanceOf" {137            shouldThrowExactly<CompleteTestException> { throw CompleteTestException() }.shouldNotHaveCauseInstanceOf<TestException>()138         }139         "shouldHaveCauseOfType" {140            shouldThrowExactly<CompleteTestException> { throw CompleteTestException() }.shouldHaveCauseOfType<FileNotFoundException>()141         }142         "shouldNotHaveCauseOfType" {143            shouldThrowExactly<CompleteTestException> { throw CompleteTestException() }.shouldNotHaveCauseOfType<IOException>()144         }145      }146      "result" - {147         "shouldHaveMessage" {148            Result.failure<Any>(FileNotFoundException("this_file.txt not found"))149               .exceptionOrNull()!! shouldHaveMessage "this_file.txt not found"150            Result.failure<Any>(TestException()).exceptionOrNull()!! shouldHaveMessage "This is a test exception"151            Result.failure<Any>(CompleteTestException())152               .exceptionOrNull()!! shouldHaveMessage "This is a complete test exception"153         }154         "shouldNotHaveMessage" {155            Result.failure<Any>(FileNotFoundException("this_file.txt not found"))156               .exceptionOrNull()!! shouldNotHaveMessage "random message"157            Result.failure<Any>(TestException())158               .exceptionOrNull()!! shouldNotHaveMessage "This is a complete test exception"159            Result.failure<Any>(CompleteTestException())160               .exceptionOrNull()!! shouldNotHaveMessage "This is a test exception"161         }162         "shouldHaveCause" {163            Result.failure<Any>(CompleteTestException()).exceptionOrNull()!!.shouldHaveCause()164            Result.failure<Any>(CompleteTestException()).exceptionOrNull()!!.shouldHaveCause {165               it shouldHaveMessage "file.txt not found"166            }167         }168         "shouldNotHaveCause" {169            Result.failure<Any>(TestException()).exceptionOrNull()!!.shouldNotHaveCause()170            Result.failure<Any>(FileNotFoundException("this_file.txt not found")).exceptionOrNull()!!171               .shouldNotHaveCause()172         }173         "shouldHaveCauseInstanceOf" {174            Result.failure<Any>(CompleteTestException()).exceptionOrNull()!!175               .shouldHaveCauseInstanceOf<FileNotFoundException>()176            Result.failure<Any>(CompleteTestException()).exceptionOrNull()!!.shouldHaveCauseInstanceOf<IOException>()177         }178         "shouldNotHaveCauseInstanceOf" {179            Result.failure<Any>(CompleteTestException()).exceptionOrNull()!!180               .shouldNotHaveCauseInstanceOf<TestException>()181         }182         "shouldHaveCauseOfType" {183            Result.failure<Any>(CompleteTestException()).exceptionOrNull()!!184               .shouldHaveCauseOfType<FileNotFoundException>()185         }186         "shouldNotHaveCauseOfType" {187            Result.failure<Any>(CompleteTestException()).exceptionOrNull()!!.shouldNotHaveCauseOfType<IOException>()188         }189      }190      "shouldThrowWithMessage" {191         shouldThrowWithMessage<TestException>("This is a test exception") {192            throw TestException()193         } shouldHaveMessage "This is a test exception"194      }195   }196   class TestException : Throwable("This is a test exception")197   class CompleteTestException :198      Throwable("This is a complete test exception", FileNotFoundException("file.txt not found"))199}...

matchers.kt

Source:matchers.kt

1package io.kotest.matchers.throwable2import io.kotest.assertions.show.show3import io.kotest.matchers.Matcher4import io.kotest.matchers.MatcherResult5import io.kotest.matchers.should6import io.kotest.matchers.shouldNot7infix fun Throwable.shouldHaveMessage(message: String) = this should haveMessage(message)8infix fun Throwable.shouldNotHaveMessage(message: String) = this shouldNot haveMessage(message)9fun haveMessage(message: String) = object : Matcher<Throwable> {10  override fun test(value: Throwable) = MatcherResult(11    value.message == message,12    "Throwable should have message ${message.show().value}, but instead got ${value.message.show().value}",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"53)...

Throwable.shouldNotHaveCause

Using AI Code Generation

1val exception = shouldThrow<RuntimeException> {2throw RuntimeException("Exception")3}4exception.shouldNotHaveCause<IOException>()5val exception = shouldThrow<RuntimeException> {6throw RuntimeException("Exception", IOException())7}8exception.shouldHaveCause<IOException>()9val exception = shouldThrow<RuntimeException> {10throw RuntimeException("Exception", IOException())11}12exception.shouldHaveCauseInstanceOf(IOException::class)13val exception = shouldThrow<RuntimeException> {14throw RuntimeException("Exception", IOException())15}16exception.shouldHaveCauseInstanceOf(IOException::class.java)17val exception = shouldThrow<RuntimeException> {18throw RuntimeException("Exception", IOException())19}20exception.shouldHaveCauseInstanceOf(IOException())21val exception = shouldThrow<RuntimeException> {22throw RuntimeException("Exception", IOException())23}24exception.shouldHaveCauseInstanceOf(IOException::class.java.name)25val exception = shouldThrow<RuntimeException> {26throw RuntimeException("Exception", IOException())27}28exception.shouldHaveCauseInstanceOf(IOException::class.java.canonicalName)29val exception = shouldThrow<RuntimeException> {30throw RuntimeException("Exception", IOException())31}32exception.shouldHaveCauseInstanceOf(IOException::class.java.simpleName)33val exception = shouldThrow<RuntimeException> {34throw RuntimeException("Exception", IOException())35}36exception.shouldHaveCauseInstanceOf(IOException::class.java.typeName)37val exception = shouldThrow<RuntimeException> {38throw RuntimeException("Exception", IOException())39}40exception.shouldHaveCauseInstanceOf(IOException::class.java.typeName)

Throwable.shouldNotHaveCause

Using AI Code Generation

1@DisplayName("shouldNotHaveCause")2fun shouldNotHaveCause() {3    val exception = RuntimeException("Boom!")4    exception.shouldNotHaveCause()5}6@DisplayName("shouldNotHaveMessage")7fun shouldNotHaveMessage() {8    val exception = RuntimeException("Boom!")9    exception.shouldNotHaveMessage("Boom!")10}11@DisplayName("shouldNotHaveMessageContaining")12fun shouldNotHaveMessageContaining() {13    val exception = RuntimeException("Boom!")14    exception.shouldNotHaveMessageContaining("boom")15}16@DisplayName("shouldNotHaveMessageMatching")17fun shouldNotHaveMessageMatching() {18    val exception = RuntimeException("Boom!")19    exception.shouldNotHaveMessageMatching(".*boom.*")20}21@DisplayName("shouldNotHaveSuppressed")22fun shouldNotHaveSuppressed() {23    val exception = RuntimeException("Boom!")24    exception.shouldNotHaveSuppressed()25}26@DisplayName("shouldNotHaveSuppressed")27fun shouldNotHaveSuppressed() {28    val exception = RuntimeException("Boom!")29    exception.shouldNotHaveSuppressed()30}31@DisplayName("shouldNotHaveSuppressed")32fun shouldNotHaveSuppressed() {33    val exception = RuntimeException("Boom!")34    exception.shouldNotHaveSuppressed()35}36@DisplayName("shouldNotHaveSuppressed")37fun shouldNotHaveSuppressed() {38    val exception = RuntimeException("Boom!")39    exception.shouldNotHaveSuppressed()40}41@DisplayName("shouldNotHaveSuppressed")

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