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

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

ThrowableMatchersTest.kt

Source: ThrowableMatchersTest.kt Github

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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}...

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matchers.kt

Source: matchers.kt Github

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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)...

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Throwable.shouldNotHaveCauseInstanceOf

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1+import io.kotest.matchers.throwable.shouldNotHaveCauseInstanceOf2+import io.kotest.matchers.throwable.shouldNotHaveMessageInstanceOf3+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf4+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf5+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf6+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf7+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf8+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf9+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf10+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf11+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf12+import io.kotest.matchers.throwable.shouldNotHaveSuppressedInstanceOf

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Throwable.shouldNotHaveCauseInstanceOf

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1+ fun `shouldNotHaveCauseInstanceOf should throw AssertionError if the cause is an instance of the given class`() {2+ val cause = RuntimeException()3+ val exception = IllegalArgumentException(cause)4+ shouldThrow<AssertionError> {5+ exception.shouldNotHaveCauseInstanceOf(IllegalArgumentException::class)6+ }7+ }8+ fun `shouldNotHaveCauseInstanceOf should not throw AssertionError if the cause is not an instance of the given class`() {9+ val cause = RuntimeException()10+ val exception = IllegalArgumentException(cause)11+ exception.shouldNotHaveCauseInstanceOf(NoSuchElementException::class)12+ }13+ fun `shouldNotHaveCauseInstanceOf should throw AssertionError if the exception has no cause`() {14+ val exception = IllegalArgumentException()15+ shouldThrow<AssertionError> {16+ exception.shouldNotHaveCauseInstanceOf(IllegalArgumentException::class)17+ }18+ }19+ fun `shouldHaveCauseInstanceOf should throw AssertionError if the cause is not an instance of the given class`() {20+ val cause = RuntimeException()21+ val exception = IllegalArgumentException(cause)22+ shouldThrow<AssertionError> {23+ exception.shouldHaveCauseInstanceOf(NoSuchElementException::class)24+ }25+ }26+ fun `shouldHaveCauseInstanceOf should not throw AssertionError if the cause is an instance of the given class`() {27+ val cause = RuntimeException()28+ val exception = IllegalArgumentException(cause)29+ exception.shouldHaveCauseInstanceOf(IllegalArgumentException::class)30+ }31+ fun `shouldHaveCauseInstanceOf should throw AssertionError if the exception has no cause`() {32+ val exception = IllegalArgumentException()

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Throwable.shouldNotHaveCauseInstanceOf

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1+ fun `shouldNotHaveCauseInstanceOf should pass when the cause is not of type`() {2+ val ex = Exception(Exception("hello"))3+ ex.shouldNotHaveCauseInstanceOf<NoSuchElementException>()4+ }5+ fun `shouldNotHaveCauseInstanceOf should fail when the cause is of type`() {6+ val ex = Exception(Exception("hello"))7+ shouldThrow<AssertionError> {8+ ex.shouldNotHaveCauseInstanceOf<Exception>()9+ }10+ }11+ fun `shouldNotHaveCauseInstanceOf should fail when the cause is of type and has the same message`() {12+ val ex = Exception(Exception("hello"))13+ shouldThrow<AssertionError> {14+ ex.shouldNotHaveCauseInstanceOf<Exception> { message shouldBe "hello" }15+ }16+ }17+ fun `shouldNotHaveCauseInstanceOf should fail when the cause is of type and has a different message`() {18+ val ex = Exception(Exception("hello"))19+ ex.shouldNotHaveCauseInstanceOf<Exception> { message shouldBe "goodbye" }20+ }21+ fun `shouldNotHaveCauseInstanceOf should fail when the cause is null`() {22+ val ex = Exception()23+ shouldThrow<AssertionError> {24+ ex.shouldNotHaveCauseInstanceOf<Exception>()25+ }26+ }27+ fun `shouldNotHaveCauseInstanceOf should pass when the cause is null and the type is different`() {28+ val ex = Exception()29+ ex.shouldNotHaveCauseInstanceOf<NoSuchElementException>()30+ }

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Throwable.shouldNotHaveCauseInstanceOf

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1 }2}3import io.kotest.assertions.throwables.shouldNotHaveCauseInstanceOf4import io.kotest.core.spec.style.FunSpec5import io.kotest.matchers.throwable.matchers.shouldHaveCauseInstanceOf6import io.kotest.matchers.throwable.matchers.shouldHaveMessage7import io.kotest.matchers.throwable.matchers.shouldHaveMessageContaining8import io.kotest.matchers.throwable.matchers.shouldHaveNoCause9import io.kotest.matchers.throwable.matchers.shouldHaveNoSuppressed10import io.kotest.matchers.throwable.matchers.shouldHaveSuppressed11import io.kotest.matchers.throwable.matchers.shouldHaveSuppressedInstanceOf12import io.kotest.matchers.throwable.matchers.shouldHaveSuppressedMessage13import io.kotest.matchers.throwable.matchers.shouldHaveSuppressedMessageContaining14import io.kotest.matchers.throwable.matchers.shouldHaveSuppressedMessages15import io.kotest.matchers.throwable.matchers.shouldHaveSuppressedMessagesContaining16import io.kotest.matchers.throwable.matchers.shouldHaveSuppressedMessagesInOrder17class ThrowableMatchersTest : FunSpec({18 test("Throwable shouldHaveMessage") {19 val throwable = Throwable("message")20 throwable.shouldHaveMessage("message")21 }22 test("Throwable shouldHaveMessageContaining") {23 val throwable = Throwable("message")24 throwable.shouldHaveMessageContaining("mess")25 }26 test("Throwable shouldHaveCauseInstanceOf") {27 val throwable = Throwable("message", Throwable("cause"))28 throwable.shouldHaveCauseInstanceOf(Throwable::class.java)29 }30 test("Throwable shouldHaveNoCause") {31 val throwable = Throwable("message")32 throwable.shouldHaveNoCause()33 }34 test("Throwable should

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