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

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

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.shouldNotBeCompletedExceptionally

Using AI Code Generation

1import io.kotest.matchers.future.matchers.shouldNotBeCompletedExceptionally2fun testCompletableFuture() {3    val future = CompletableFuture<String>()4    future.complete("Hello")5    future.shouldNotBeCompletedExceptionally()6}7import io.kotest.matchers.future.matchers.shouldBeCompletedExceptionally8fun testCompletableFuture() {9    val future = CompletableFuture<String>()10    future.completeExceptionally(RuntimeException())11    future.shouldBeCompletedExceptionally()12}13import io.kotest.matchers.future.matchers.shouldBeCancelled14fun testCompletableFuture() {15    val future = CompletableFuture<String>()16    future.cancel(true)17    future.shouldBeCancelled()18}19import io.kotest.matchers.future.matchers.shouldBeCancelled20fun testCompletableFuture() {21    val future = CompletableFuture<String>()22    future.cancel(true)23    future.shouldBeCancelled()24}25import io.kotest.matchers.future.matchers.shouldBeCancelled26fun testCompletableFuture() {27    val future = CompletableFuture<String>()28    future.cancel(true)29    future.shouldBeCancelled()30}31import io.kotest.matchers.future.matchers.shouldBeCancelled32fun testCompletableFuture() {33    val future = CompletableFuture<String>()34    future.cancel(true)35    future.shouldBeCancelled()36}37import io.kotest.matchers.future.matchers.shouldBeCancelled38fun testCompletableFuture() {39    val future = CompletableFuture<String>()40    future.cancel(true)41    future.shouldBeCancelled()42}43import io.kotest.matchers.future.matchers.shouldBeCancelled

CompletableFuture.shouldNotBeCompletedExceptionally

Using AI Code Generation

1import io.kotest.matchers.future.matchers.shouldNotBeCompletedExceptionally2import io.kotest.matchers.shouldBe3import io.kotest.matchers.shouldNotBe4import java.util.concurrent.CompletableFuture5import java.util.concurrent.CompletionException6import java.util.concurrent.Executors7import java.util.concurrent.TimeUnit8import java.util.concurrent.TimeoutException9import java.util.concurrent.atomic.AtomicInteger10import kotlin.test.Test11class FutureMatchersTest {12fun `shouldNotBeCompletedExceptionally should pass when the future completes successfully`() {13val future = CompletableFuture.supplyAsync { 3 }14future.shouldNotBeCompletedExceptionally()15}16fun `shouldNotBeCompletedExceptionally should fail when the future completes exceptionally`() {17val future = CompletableFuture.supplyAsync { throw IllegalStateException() }18future.shouldNotBeCompletedExceptionally()19}20fun `shouldNotBeCompletedExceptionally should fail when the future completes exceptionally with the specified exception`() {21val future = CompletableFuture.supplyAsync { throw IllegalStateException() }22future.shouldNotBeCompletedExceptionally(TimeoutException::class)23}24}

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