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How to use clues class of io.kotest.assertions package

Best Kotest code snippet using io.kotest.assertions.clues

ClueTest.kt

Source:ClueTest.kt

...28            withClue("a clue:") { "1" shouldBe withClueEcho("here are the details!") }29         }30         ex.message shouldBe "a clue:\nShould have the details of '1' and here are the details!"31      }32      "should add clues correctly with multiple/softAssert" {33         val ex = shouldThrow<AssertionError> {34            withClue("outer clue:") {35               assertSoftly {36                  "1" shouldBe withClueEcho("the details!")37                  withClue("inner clue:") { "2" shouldBe "1" }38               }39            }40         }41         ex.message.apply {42            shouldContain("outer clue:\nShould have the details of '1' and the details!")43            shouldContain("inner clue:\nexpected:<\"1\"> but was:<\"2\">")44         }45      }46      "should show all available nested clue contexts" {47         withClue("clue outer:") {48            shouldThrow<AssertionError> { "1" shouldBe "2" }.message shouldBe "clue outer:\nexpected:<\"2\"> but was:<\"1\">"49            withClue("clue inner:") {50               shouldThrow<AssertionError> { "3" shouldBe "4" }.message shouldBe "clue outer:\nclue inner:\nexpected:<\"4\"> but was:<\"3\">"51            }52            shouldThrow<AssertionError> { "5" shouldBe "6" }.message shouldBe "clue outer:\nexpected:<\"6\"> but was:<\"5\">"53         }54         //And resets completely when leaving final clue block55         shouldThrow<AssertionError> { "7" shouldBe "8" }.message shouldBe "expected:<\"8\"> but was:<\"7\">"56      }57      "should only invoke the lazy if an assertion fails" {58         val expected = UUID.randomUUID()59         var state: String? = null60         val clue: Lazy<UUID> = lazy {61            expected.also { state = it.toString() }62         }63         state.shouldBeNull()64         withClue(clue) {65            1 + 1 shouldBe 266         }67         state.shouldBeNull()68         withClue(clue) {69            shouldThrow<AssertionError> { "1" shouldBe "2" }.message shouldStartWith expected.toString()70         }71         state shouldBe expected.toString()72      }73      "clue can be nullable" {74         val ex = shouldThrow<AssertionError> {75            withClue(null) { 1 shouldBe 2 }76         }77         ex.message shouldBe "null\nexpected:<2> but was:<1>"78      }79   }80   "asClue()" - {81      "should prepend clue to message with a newline" {82         val ex = shouldThrow<AssertionError> {83            "a clue:".asClue { "1" shouldBe "2" }84         }85         ex.message shouldBe "a clue:\nexpected:<\"2\"> but was:<\"1\">"86      }87      "should add clues correctly with multiple/softAssert" {88         val ex = shouldThrow<AssertionError> {89            "outer clue:".asClue {90               assertSoftly {91                  "1" shouldBe "the details"92                  "inner clue:".asClue { "2" shouldBe "1" }93               }94            }95         }96         ex.message.apply {97            shouldContain("outer clue:\nexpected:<\"the details\"> but was:<\"1\">")98            shouldContain("outer clue:\ninner clue:\nexpected:<\"1\"> but was:<\"2\">")99         }100      }101      "should show all available nested clue contexts" {...

AssertionsTest.kt

Source:AssertionsTest.kt

1package com.psg.kotest_example2import io.kotest.assertions.asClue3import io.kotest.assertions.assertSoftly4import io.kotest.assertions.throwables.shouldThrow5import io.kotest.assertions.throwables.shouldThrowAny6import io.kotest.assertions.withClue7import io.kotest.core.spec.style.FreeSpec8import io.kotest.matchers.collections.shouldContainAll9import io.kotest.matchers.comparables.shouldBeGreaterThanOrEqualTo10import io.kotest.matchers.shouldBe11import io.kotest.matchers.shouldNotBe12import io.kotest.matchers.string.*13class AssertionsTest : FreeSpec() {14    init {15        "Matchers" - {16            val testStr = "I am iron man"17            val testNum = 518            val testList = listOf("iron", "bronze", "silver")19            "ì¼ì¹ íëì§" {20                testStr shouldBe "I am iron man"21            }22            "ì¼ì¹ ì íëì§" {23                testStr shouldNotBe "I am silver man"24            }25            "í´ë¹ ë¬¸ìì´ë¡ ììíëì§" {26                testStr shouldStartWith "I am"27            }28            "í´ë¹ ë¬¸ìì´ì í¬í¨íëì§" {29                testStr shouldContain "iron"30            }31            "ë¦¬ì¤í¸ìì í´ë¹ ë¦¬ì¤í¸ì ê°ë¤ì´ ëª¨ë í¬í¨ëëì§" {32                testList shouldContainAll listOf("iron", "silver")33            }34            "ëìë¬¸ì ë¬´ìíê³  ì¼ì¹íëì§" {35                testStr shouldBeEqualIgnoringCase "I AM IRON MAN"36            }37            "ë³´ë¤ í°ê±°ë ê°ìì§" {38                testNum shouldBeGreaterThanOrEqualTo 339            }40            "í´ë¹ ë¬¸ìì´ê³¼ ê¸¸ì´ê° ê°ìì§" {41                testStr shouldHaveSameLengthAs "I AM SUPERMAN"42            }43            "ë¬¸ìì´ ê¸¸ì´" {44                testStr shouldHaveLength 1345            }46            "ì¬ë¬ê° ì²´ì´ë" {47                testStr.shouldStartWith("I").shouldHaveLength(13).shouldContainIgnoringCase("IRON")48            }49        }50        "Exception" - {51            "ArithmeticException Exception ë°ìíëì§" {52                val exception = shouldThrow<ArithmeticException> {53                    1 / 054                }55                exception.message shouldStartWith ("/ by zero")56            }57            "ì´ë¤ Exceptionì´ë  ë°ìíëì§" {58                val exception = shouldThrowAny {59                    1 / 060                }61                exception.message shouldStartWith ("/ by zero")62            }63        }64        "Clues" - {65            data class HttpResponse(val status: Int, val body: String)66            val response = HttpResponse(404, "the content")67            "Not Use Clues" {68                response.status shouldBe 20069                response.body shouldBe "the content"70                // ê²°ê³¼: expected:<200> but was:<404>71            }72            "With Clues" {73                withClue("statusë 200ì´ì¬ì¼ ëê³  bodyë 'the content'ì¬ì¼ íë¤") {74                    response.status shouldBe 20075                    response.body shouldBe "the content"76                }77                // ê²°ê³¼: statusë 200ì´ì¬ì¼ ëê³  bodyë 'the content'ì¬ì¼ íë¤78            }79            "As Clues" {80                response.asClue {81                    it.status shouldBe 20082                    it.body shouldBe "the content"83                }84                // ê²°ê³¼: HttpResponse(status=404, body=the content)85            }86        }87        "Soft Assertions" - { // assertê° ì¤ê°ì ì¤í¨í´ë ëê¹ì§ ì²´í¬ê° ê°ë¥í¨88            val testStr = "I am iron man"89            val testNum = 590            "Not Soft" {91                testStr shouldBe "IronMan"92                testNum shouldBe 193                // ê²°ê³¼: expected:<"IronMan"> but was:<"I am iron man">94            }95            "Use Soft" {96                assertSoftly {97                    testStr shouldBe "IronMan"98                    testNum shouldBe 199                }100                // ê²°ê³¼: expected:<"IronMan"> but was:<"I am iron man">101                //      expected:<1> but was:<5>102            }103        }104    }105}...

CluesTests.kt

Source:CluesTests.kt

1package io.kotest.assertions2import io.kotest.core.spec.style.FunSpec3import io.kotest.matchers.collections.shouldHaveSize4import io.kotest.matchers.ints.shouldBeGreaterThanOrEqual5import io.kotest.matchers.shouldBe6import kotlinx.coroutines.Dispatchers7import kotlinx.coroutines.ExperimentalCoroutinesApi8import kotlinx.coroutines.coroutineScope9import kotlinx.coroutines.delay10import kotlinx.coroutines.launch11import kotlinx.coroutines.withContext12class CluesTests : FunSpec({13   test("withClue should not fail on coroutine thread switch") {14      withContext(Dispatchers.Unconfined) {15         val threadIds = mutableSetOf<Long>()16         withClue("should not fail") {17            threadIds.add(Thread.currentThread().id)18            delay(10)19            threadIds.add(Thread.currentThread().id)20         }21         threadIds shouldHaveSize 222      }23   }24   test("concurrent withClue invocations should be isolated from each other") {25      @OptIn(ExperimentalCoroutinesApi::class)26      withContext(Dispatchers.IO.limitedParallelism(8)) {27         val repetitionCount = 10028         val parentCoroutineCount = 229         val childCoroutineCount = 1030         val stepCount = 231         // These parameters specify a certain quota of repetitions to succeed in dispatching coroutines to32         // a specified minimum number of threads. This safeguards against subtle differences in dispatcher33         // implementations (how many threads to allocate, how many threads to actually use for coroutines).34         val minimumThreadCount = 235         val minimumThreadRepetitionQuota = repetitionCount / 236         var minimumThreadRepetitionCount = 037         for (repetitionNumber in 1..repetitionCount) {38            val threadIds = mutableSetOf<Long>()39            coroutineScope {40               for (parentCoroutineNumber in 1..parentCoroutineCount) {41                  launch {42                     val parentClue = "r=$repetitionNumber, p=$parentCoroutineNumber"43                     withClue(parentClue) {44                        for (childCoroutineNumber in 1..childCoroutineCount) {45                           launch {46                              for (stepNumber in 1..stepCount) {47                                 val childClue = "r=$repetitionNumber, c=$childCoroutineNumber, s=$stepNumber"48                                 withClue(childClue) {49                                    clueContextAsString() shouldBe "$parentClue\n$childClue\n"50                                    synchronized(threadIds) { threadIds.add(Thread.currentThread().id) }51                                    delay(1L)52                                    clueContextAsString() shouldBe "$parentClue\n$childClue\n"53                                    synchronized(threadIds) { threadIds.add(Thread.currentThread().id) }54                                 }55                              }56                           }57                        }58                     }59                  }60               }61            }62            if (threadIds.size >= minimumThreadCount)63               minimumThreadRepetitionCount++64         }65         minimumThreadRepetitionCount shouldBeGreaterThanOrEqual minimumThreadRepetitionQuota66      }67   }68})...

ErrorCollector.kt

Source:ErrorCollector.kt

...22   fun pushClue(clue: Any)23   fun popClue()24   /**25    * Returns the current clue context.26    * That is all the clues nested to this point.27    */28   fun clueContext(): List<Any>29}30open class BasicErrorCollector : ErrorCollector {31   private val failures = mutableListOf<Throwable>()32   private var mode = ErrorCollectionMode.Hard33   private val clues = mutableListOf<Any>()34   override fun getCollectionMode(): ErrorCollectionMode = mode35   override fun setCollectionMode(mode: ErrorCollectionMode) {36      this.mode = mode37   }38   override fun pushClue(clue: Any) {39      clues.add(0, clue)40   }41   override fun popClue() {42      clues.removeAt(0)43   }44   override fun clueContext(): List<Any> = clues.toList()45   override fun pushError(t: Throwable) {46      failures.add(t)47   }48   override fun errors(): List<Throwable> = failures.toList()49   override fun clear() = failures.clear()50}51fun clueContextAsString() = errorCollector.clueContext().let {52   if (it.isEmpty()) "" else it.joinToString("\n", postfix = "\n")53}54/**55 * If we are in "soft assertion mode" will add this throwable to the56 * list of throwables for the current execution. Otherwise will57 * throw immediately.58 */...

clues.kt

Source:clues.kt

1package io.kotest.assertions2/**3 * Add [clue] as additional info to the assertion error message in case an assertion fails.4 * Can be nested, the error message will contain all available clues.5 *6 * @param thunk the code with assertions to be executed7 * @return the return value of the supplied [thunk]8 */9inline fun <R> withClue(clue: Any, thunk: () -> R): R {10   return clue.asClue { thunk() }11}12/**13 * Similar to `withClue`, but will add `this` as a clue to the assertion error message in case an assertion fails.14 * Can be nested, the error message will contain all available clues.15 *16 * @param block the code with assertions to be executed17 * @return the return value of the supplied [block]18 */19inline fun <T : Any, R> T.asClue(block: (T) -> R): R {20   try {21      errorCollector.pushClue(this)22      return block(this)23   } finally {24      errorCollector.popClue()25   }26}27inline fun <T : Any> Iterable<T>.forEachAsClue(action: (T) -> Unit) = forEach { element ->28   element.asClue {...

clues

Using AI Code Generation

1import io.kotest.assertions.clues2class MyTest : StringSpec({3"test" {4clues(5a.shouldBe(2),6b.shouldBe(3),7c.shouldBe(4),8d.shouldBe(5)9}10})11import io.kotest.assertions.fail12class MyTest : StringSpec({13"test" {14fail("failed")15}16})17import io.kotest.assertions.shouldBe18class MyTest : StringSpec({19"test" {20a.shouldBe(2)21b.shouldBe(3)22c.shouldBe(4)23d.shouldBe(5)24}25})26import io.kotest.assertions.shouldContain27class MyTest : StringSpec({28"test" {29val a = listOf(1, 2, 3, 4)30a.shouldContain(5)31}32})33import io.kotest.assertions.shouldContainAll34class MyTest : StringSpec({35"test" {36val a = listOf(1, 2, 3, 4)37a.shouldContainAll(2, 3, 4)38}39})40import io.kotest.assertions.shouldContainExactly41class MyTest : StringSpec({42"test" {43val a = listOf(1, 2, 3, 4)44a.shouldContainExactly(1, 2, 3, 4)45}46})47import io.kotest.assertions.shouldContainExactlyInAnyOrder48class MyTest : StringSpec({49"test" {50val a = listOf(1, 2, 3, 4)

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