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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

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.shouldNotHaveCauseInstanceOf

Using AI Code Generation

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

Throwable.shouldNotHaveCauseInstanceOf

Using AI Code Generation

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()

Throwable.shouldNotHaveCauseInstanceOf

Using AI Code Generation

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+    }

Throwable.shouldNotHaveCauseInstanceOf

Using AI Code Generation

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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