Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use CompletableFuture.shouldNotBeCancelled method of io.kotest.matchers.future.matchers class

Best Kotest code snippet using io.kotest.matchers.future.matchers.CompletableFuture.shouldNotBeCancelled

FutureMatcherTest.kt

Source:FutureMatcherTest.kt

1package com.sksamuel.kotest.matchers.future2import io.kotest.assertions.throwables.shouldThrowMessage3import io.kotest.core.spec.style.StringSpec4import io.kotest.matchers.future.*5import kotlinx.coroutines.delay6import java.util.concurrent.CompletableFuture7import java.util.concurrent.Executors8class FutureMatcherTest : StringSpec({9   "test future is completed" {10      val completableFuture = CompletableFuture<Int>()11      completableFuture.complete(2)12      completableFuture.shouldBeCompleted()13   }14   "test future is not completed" {15      val completableFuture = CompletableFuture<Int>()16      completableFuture.shouldNotBeCompleted()17   }18   "test future is cancelled" {19      val completableFuture = CompletableFuture<Int>()20      completableFuture.cancel(true)21      completableFuture.shouldBeCancelled()22   }23   "test future is not cancelled" {24      val completableFuture = CompletableFuture<Int>()25      completableFuture.shouldNotBeCancelled()26   }27   "test future is completed exceptionally" {28      val completableFuture = CompletableFuture<Int>()29      Executors.newFixedThreadPool(1).submit {30         completableFuture.cancel(false)31      }32      delay(200)33      completableFuture.shouldBeCompletedExceptionally()34   }35   "test future is not completed exceptionally" {36      val completableFuture = CompletableFuture<Int>()37      completableFuture.complete(2)38      completableFuture.shouldNotBeCompletedExceptionally()39   }40   "test future completes exceptionally with the given exception"{41      val completableFuture = CompletableFuture<Int>()42      val exception = RuntimeException("Boom Boom")43      Executors.newFixedThreadPool(1).submit {44         completableFuture.completeExceptionally(exception)45      }46      completableFuture shouldCompleteExceptionallyWith exception47   }48   "test future does not completes exceptionally with given exception " {49      val completableFuture = CompletableFuture<Int>()50      Executors.newFixedThreadPool(1).submit {51         completableFuture.completeExceptionally(RuntimeException("Boom Boom"))52      }53      completableFuture shouldNotCompleteExceptionallyWith RuntimeException("Bang Bang")54   }55   "test error message for shouldCompleteExceptionallyWith when completable future does not complete with exception" {56      val completableFuture = CompletableFuture<Int>()57      val exception = RuntimeException("Boom Boom")58      completableFuture.complete(2)59      shouldThrowMessage("Expected future to fail with $exception, but it did not failed with any exception") {60         completableFuture shouldCompleteExceptionallyWith exception61      }62   }63   "test error message for shouldCompleteExceptionallyWith when completable future fail with some other exception" {64      val completableFuture = CompletableFuture<Int>()65      val expectedException = RuntimeException("Boom Boom")66      val actualException = RuntimeException("Bang Bang")67      completableFuture.completeExceptionally(actualException)68      shouldThrowMessage("Expected future to fail with $expectedException, but it failed with $actualException") {69         completableFuture shouldCompleteExceptionallyWith expectedException70      }71   }72   "test error message for shouldNotCompleteExceptionallyWith when completable future completes with given exception" {73      val completableFuture = CompletableFuture<Int>()74      val exception = RuntimeException("Boom Boom")75      completableFuture.completeExceptionally(exception)76      shouldThrowMessage("Expected future not to fail with $exception, but it did fail with it.") {77         completableFuture shouldNotCompleteExceptionallyWith exception78      }79   }80   "test shouldNotCompleteExceptionallyWith passes when completable future completes without any exception" {81      val completableFuture = CompletableFuture<Int>()82      completableFuture.complete(2)83      completableFuture shouldNotCompleteExceptionallyWith RuntimeException("Bang Bang")84   }85})...

matchers.kt

Source:matchers.kt

1package io.kotest.matchers.future2import io.kotest.matchers.Matcher3import io.kotest.matchers.MatcherResult4import io.kotest.matchers.should5import io.kotest.matchers.shouldBe6import io.kotest.matchers.shouldNot7import io.kotest.matchers.shouldNotBe8import java.util.concurrent.CompletableFuture9fun <T> CompletableFuture<T>.shouldBeCompletedExceptionally() = this shouldBe completedExceptionally<T>()10fun <T> CompletableFuture<T>.shouldNotBeCompletedExceptionally() = this shouldNotBe completedExceptionally<T>()11fun <T> completedExceptionally() = object : Matcher<CompletableFuture<T>> {12   override fun test(value: CompletableFuture<T>): MatcherResult =13      MatcherResult(14         value.isCompletedExceptionally,15         { "Future should be completed exceptionally" },16         {17            "Future should not be completed exceptionally"18         })19}20fun <T> CompletableFuture<T>.shouldBeCompleted() = this shouldBe completed<T>()21fun <T> CompletableFuture<T>.shouldNotBeCompleted() = this shouldNotBe completed<T>()22fun <T> completed() = object : Matcher<CompletableFuture<T>> {23   override fun test(value: CompletableFuture<T>): MatcherResult =24      MatcherResult(25         value.isDone,26         { "Future should be completed" },27         {28            "Future should not be completed"29         })30}31fun <T> CompletableFuture<T>.shouldBeCancelled() = this shouldBe cancelled<T>()32fun <T> CompletableFuture<T>.shouldNotBeCancelled() = this shouldNotBe cancelled<T>()33fun <T> cancelled() = object : Matcher<CompletableFuture<T>> {34   override fun test(value: CompletableFuture<T>): MatcherResult =35      MatcherResult(36         value.isCancelled,37         { "Future should be completed" },38         {39            "Future should not be completed"40         })41}42infix fun CompletableFuture<*>.shouldCompleteExceptionallyWith(throwable: Throwable) =43   this should completeExceptionallyWith(throwable)44infix fun CompletableFuture<*>.shouldNotCompleteExceptionallyWith(throwable: Throwable) =45   this shouldNot completeExceptionallyWith(throwable)46internal fun completeExceptionallyWith(throwable: Throwable) = object : Matcher<CompletableFuture<*>> {47   override fun test(value: CompletableFuture<*>): MatcherResult {48      val exception = value.runCatching { get() }.exceptionOrNull()49      return MatcherResult(50         exception != null && exception.cause == throwable,51         { errorMessageForTestFailure(exception?.cause, throwable) },52         { "Expected future not to fail with ${exception?.cause}, but it did fail with it." }53      )54   }55}56internal fun errorMessageForTestFailure(actualException: Throwable?, expectedException: Throwable): String {57   if (actualException == null) {58      return "Expected future to fail with $expectedException, but it did not failed with any exception"59   }60   return "Expected future to fail with $expectedException, but it failed with $actualException"61}...

CompletableFuture.shouldNotBeCancelled

Using AI Code Generation

1CompletableFuture.shouldNotBeCancelled ( )2CompletableFuture.shouldNotBeCancelled ( )3CompletableFuture.shouldNotBeCancelled ( )4CompletableFuture.shouldNotBeCancelled ( )5CompletableFuture.shouldNotBeCancelled ( )6CompletableFuture.shouldNotBeCancelled ( )7CompletableFuture.shouldNotBeCancelled ( )8CompletableFuture.shouldNotBeCancelled ( )9CompletableFuture.shouldNotBeCancelled ( )10CompletableFuture.shouldNotBeCancelled ( )11CompletableFuture.shouldNotBeCancelled ( )12CompletableFuture.shouldNotBeCancelled ( )

CompletableFuture.shouldNotBeCancelled

Using AI Code Generation

1fun `should not be cancelled`() {2    val future = CompletableFuture<String>().apply { complete("Hello") }3    future.shouldNotBeCancelled()4}5fun `should not be completed exceptionally`() {6    val future = CompletableFuture<String>().apply { complete("Hello") }7    future.shouldNotBeCompletedExceptionally()8}9fun `should not be completed with null`() {10    val future = CompletableFuture<String>().apply { complete("Hello") }11    future.shouldNotBeCompletedWithNull()12}13fun `should not be done`() {14    val future = CompletableFuture<String>().apply { complete("Hello") }15    future.shouldNotBeDone()16}17fun `should not be failed`() {18    val future = CompletableFuture<String>().apply { complete("Hello") }19    future.shouldNotBeFailed()20}21fun `should not be successful`() {22    val future = CompletableFuture<String>().apply { complete("Hello") }23    future.shouldNotBeSuccessful()24}25fun `should not be successful with`() {26    val future = CompletableFuture<String>().apply { complete("Hello") }27    future.shouldNotBeSuccessfulWith("Hello")28}29fun `should not be successful with null`() {30    val future = CompletableFuture<String>().apply { complete("Hello") }31    future.shouldNotBeSuccessfulWithNull()32}33fun `should not be waiting for`() {

CompletableFuture.shouldNotBeCancelled

Using AI Code Generation

1val future = CompletableFuture . supplyAsync { 1 } future . shouldNotBeCancelled ()2val future = CompletableFuture . supplyAsync { 1 } future . shouldNotBeCompletedExceptionally ()3val future = CompletableFuture . supplyAsync { 1 } future . shouldNotBeCompletedWithNull ()4val future = CompletableFuture . supplyAsync { 1 } future . shouldNotBeCompletedWithValue ( 1 )5val future = CompletableFuture . supplyAsync { 1 } future . shouldNotBeCompletedWith ( 1 )6val future = CompletableFuture . supplyAsync { 1 } val value = 1 future . shouldNotBeCompletedWithSame ( value )7val future = CompletableFuture . supplyAsync { 1 } val value = 1 future . shouldNotBeCompletedWithSameInstance ( value )

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.