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

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

FutureMatcherTest.kt

Source:FutureMatcherTest.kt Github

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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})...

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matchers.kt

Source:matchers.kt Github

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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}...

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CompletableFuture.shouldBeCancelled

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1import io.kotest.matchers.future.shouldBeCancelled2import io.kotest.matchers.future.shouldBeCompleted3import io.kotest.matchers.future.shouldBeCompletedWithValue4import io.kotest.matchers.future.shouldBeFailed5import io.kotest.matchers.future.shouldBeFailedWith6import kotlinx.coroutines.Dispatchers7import kotlinx.coroutines.GlobalScope8import kotlinx.coroutines.delay9import kotlinx.coroutines.future.future10import kotlinx.coroutines.runBlocking11import org.junit.jupiter.api.Test12import java.util.concurrent.CompletableFuture13import java.util.concurrent.Executors14class CompletableFutureTest {15 fun `test future is completed`() {16 val future = CompletableFuture<String>()17 future.complete("completed")18 future.shouldBeCompleted()19 future.shouldBeCompletedWithValue("completed")20 }21 fun `test future is failed`() {22 val future = CompletableFuture<String>()23 future.completeExceptionally(Exception("exception"))24 future.shouldBeFailed()25 future.shouldBeFailedWith<Exception> { it.message == "exception" }26 }27 fun `test future is cancelled`() {28 val future = CompletableFuture<String>()29 future.cancel(true)30 future.shouldBeCancelled()31 }32 fun `test future is completed with delay`() {33 val future = GlobalScope.future(Dispatchers.IO) {34 delay(1000)35 }36 runBlocking {37 future.shouldBeCompletedWithValue("completed")38 }39 }40 fun `test future is completed with delay in another thread`() {41 val future = GlobalScope.future(Dispatchers.IO) {42 delay(1000)43 }44 runBlocking {45 future.shouldBeCompletedWithValue("completed")46 }47 }48}49import io.kotest.matchers.future.shouldBeCancelled50import io.kotest.matchers.future.shouldBeCompleted51import io.kotest.matchers.future.shouldBeCompletedWithValue52import io.kotest.matchers.future.shouldBeFailed53import io.kotest.matchers.future.shouldBeFailedWith54import kotlinx.coroutines.Dispatchers55import kotlinx.coroutines.GlobalScope56import kotlinx.coroutines.delay57import kotlinx.coroutines.future.future58import kotlinx.coroutines.runBlocking59import

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CompletableFuture.shouldBeCancelled

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1@JvmName("shouldBeCancelled")2fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()3@JvmName("shouldBeCancelled")4fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()5@JvmName("shouldBeCancelled")6fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()7@JvmName("shouldBeCancelled")8fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()9@JvmName("shouldBeCancelled")10fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()11@JvmName("shouldBeCancelled")12fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()13@JvmName("shouldBeCancelled")14fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()15@JvmName("shouldBeCancelled")16fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()17@JvmName("shouldBeCancelled")18fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()19@JvmName("shouldBeCancelled")20fun <T> Future<T>.shouldBeCancelled() = this.shouldBeCancelled()

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CompletableFuture.shouldBeCancelled

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1@DisplayName("Should be cancelled")2fun shouldBeCancelled() {3 val future = CompletableFuture.runAsync {4 Thread.sleep(1000)5 }6 future.cancel(true)7 future.shouldBeCancelled()8}9@DisplayName("Should be completed")10fun shouldBeCompleted() {11 val future = CompletableFuture.runAsync {12 Thread.sleep(1000)13 }14 future.shouldBeCompleted()15}16@DisplayName("Should be completed exceptionally")17fun shouldBeCompletedExceptionally() {18 val future = CompletableFuture.runAsync {19 Thread.sleep(1000)20 throw RuntimeException()21 }22 future.shouldBeCompletedExceptionally()23}24@DisplayName("Should be completed with value")25fun shouldBeCompletedWithValue() {26 val future = CompletableFuture.completedFuture(10)27 future.shouldBeCompletedWithValue(10)28}29@DisplayName("Should be completed with value in")30fun shouldBeCompletedWithValueIn() {31 val future = CompletableFuture.completedFuture(10)32 future.shouldBeCompletedWithValueIn(10, Duration.ofSeconds(1))33}34@DisplayName("Should be completed with value matching")35fun shouldBeCompletedWithValueMatching() {36 val future = CompletableFuture.completedFuture(10)37 future.shouldBeCompletedWithValueMatching { it == 10 }38}39@DisplayName("Should be completed with value null")40fun shouldBeCompletedWithValueNull() {41 val future = CompletableFuture.completedFuture(null)42 future.shouldBeCompletedWithValueNull()43}44@DisplayName("Should be completed with value not null")45fun shouldBeCompletedWithValueNotNull() {46 val future = CompletableFuture.completedFuture(10)47 future.shouldBeCompletedWithValueNotNull()48}

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CompletableFuture.shouldBeCancelled

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1import io.kotest.matchers.future.matchers.shouldBeCancelled2import kotlinx.coroutines.delay3import kotlinx.coroutines.runBlocking4import org.junit.jupiter.api.Test5class ExampleTest {6 fun test() {7 runBlocking {8 val future = CompletableFuture.supplyAsync {9 delay(1000)10 }11 future.cancel(true)12 future.shouldBeCancelled()13 }14 }15}16import io.kotest.matchers.future.matchers.shouldBeCancelled17import kotlinx.coroutines.delay18import kotlinx.coroutines.runBlocking19import org.junit.jupiter.api.Test20class ExampleTest {21 fun test() {22 runBlocking {23 val future = CompletableFuture.supplyAsync {24 delay(1000)25 }26 future.cancel(true)27 future.shouldBeCancelled("message")28 }29 }30}31import io.kotest.matchers.future.matchers.shouldBeCancelled32import kotlinx.coroutines.delay33import kotlinx.coroutines.runBlocking34import org.junit.jupiter.api.Test35class ExampleTest {36 fun test() {37 runBlocking {38 val future = CompletableFuture.supplyAsync {39 delay(1000)40 }41 future.cancel(true)42 future.shouldBeCancelled("message") { "Hello" }43 }44 }45}46import io.kotest.matchers.future.matchers.shouldBeCancelled47import kotlinx.coroutines.delay48import kotlinx.coroutines.runBlocking49import org.junit.jupiter.api.Test50class ExampleTest {51 fun test() {52 runBlocking {53 val future = CompletableFuture.supplyAsync {54 delay(1000)55 }56 future.cancel(true)57 future.shouldBeCancelled { "Hello" }58 }59 }60}61import io.kot

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CompletableFuture.shouldBeCancelled

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1fun main() { val future = CompletableFuture .supplyAsync { Thread .sleep( 2000 ) "Hello" } future.shouldBeCancelled() }2fun main() { val future = CompletableFuture .supplyAsync { Thread .sleep( 2000 ) "Hello" } future.shouldBeCancelled() }3fun main() { val future = CompletableFuture .supplyAsync { Thread .sleep( 2000 ) "Hello" } future.shouldBeCancelled() }4fun main() { val future = CompletableFuture .supplyAsync { Thread .sleep( 2000 ) "Hello" } future.shouldBeCancelled() }5fun main() { val future = CompletableFuture .supplyAsync { Thread .sleep( 2000 ) "Hello" } future.shouldBeCancelled() }6fun main() { val future = CompletableFuture .supplyAsync { Thread .sleep( 2000 ) "Hello" } future.shouldBeCancelled() }7fun main() { val future = CompletableFuture .supplyAsync { Thread .sleep( 2000 ) "Hello" } future.shouldBeCancelled() }8fun main() { val future = CompletableFuture .supplyAsync { Thread .sleep( 2000 ) "Hello" } future.shouldBeCancelled() }9fun main() { val future = CompletableFuture .supplyAsync { Thread .sleep( 2000 ) "Hello" } future.shouldBe

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