How to use KotestEngineLauncher class of io.kotest.engine package

Best Kotest code snippet using io.kotest.engine.KotestEngineLauncher

KotestEngineLauncher.kt

Source:KotestEngineLauncher.kt

...15 */16@KotestInternal17@Suppress("DEPRECATION")18@Deprecated("Prefer TestEngineLauncher. Deprecated since 5.0")19class KotestEngineLauncher(20   private val listeners: List<TestEngineListener>,21   private val specs: List<KClass<out Spec>>,22   private val testFilters: List<TestFilter>,23   private val specFilters: List<SpecFilter>,24   private val tags: TagExpression?,25   private val scripts: List<KClass<*>>,26) {27   companion object {28      fun default(29         listeners: List<TestEngineListener>,30         specs: List<KClass<out Spec>>,31         tags: TagExpression?32      ): KotestEngineLauncher {33         return KotestEngineLauncher(34            listeners = listeners,35            specs = specs,36            scripts = emptyList(),37            testFilters = emptyList(),38            specFilters = emptyList(),39            tags = tags,40         )41      }42   }43   constructor() : this(emptyList(), emptyList(), emptyList(), emptyList(), null, emptyList())44   @Deprecated("This class is deprecated since 5.0")45   fun launch(): EngineResult {46      if (listeners.isEmpty())47         error("Cannot launch a KotestEngine without at least one TestEngineListener")48      val launcher = TestEngineLauncher(49         ThreadSafeTestEngineListener(50            PinnedSpecTestEngineListener(51               CompositeTestEngineListener(listeners)52            )53         )54      ).withExtensions(testFilters)55         .withExtensions(specFilters)56         .withTagExpression(tags)57         .withClasses(specs)58      return launcher.launch()59   }60   @Deprecated("This class is deprecated since 5.0")61   fun withFilter(filter: TestFilter) = withFilters(listOf(filter))62   @Deprecated("This class is deprecated since 5.0")63   fun withListener(listener: TestEngineListener) = KotestEngineLauncher(64      listeners = this.listeners + listener,65      specs = specs,66      testFilters = testFilters,67      specFilters = specFilters,68      tags = tags,69      scripts = scripts,70   )71   @Deprecated("This class is deprecated since 5.0")72   fun withDumpConfig(dump: Boolean) = KotestEngineLauncher(73      listeners = listeners,74      specs = specs,75      testFilters = testFilters,76      specFilters = specFilters,77      tags = tags,78      scripts = scripts,79   )80   @Deprecated("This class is deprecated since 5.0")81   fun withSpecFilters(filters: List<SpecFilter>): KotestEngineLauncher {82      return KotestEngineLauncher(83         listeners = listeners,84         specs = specs,85         testFilters = testFilters,86         specFilters = specFilters + filters,87         tags = tags,88         scripts = scripts,89      )90   }91   @Deprecated("This class is deprecated since 5.0")92   fun withTestFilters(filters: List<TestFilter>): KotestEngineLauncher {93      return KotestEngineLauncher(94         listeners = listeners,95         specs = specs,96         testFilters = testFilters + filters,97         specFilters = specFilters,98         tags = tags,99         scripts = scripts,100      )101   }102   @Deprecated("This class is deprecated since 5.0")103   fun withFilters(filters: List<TestFilter>): KotestEngineLauncher = withTestFilters(filters)104   @Deprecated("This class is deprecated since 5.0")105   fun withScripts(scripts: List<KClass<*>>): KotestEngineLauncher {106      return KotestEngineLauncher(107         listeners = listeners,108         specs = specs,109         testFilters = testFilters,110         specFilters = specFilters,111         tags = tags,112         scripts = scripts,113      )114   }115   @Deprecated("This class is deprecated since 5.0")116   fun withSpec(klass: KClass<out Spec>) = withSpecs(listOf(klass))117   @Deprecated("This class is deprecated since 5.0")118   fun withSpecs(vararg specs: KClass<out Spec>) = withSpecs(specs.toList())119   @Deprecated("This class is deprecated since 5.0")120   fun withSpecs(specs: List<KClass<out Spec>>): KotestEngineLauncher {121      return KotestEngineLauncher(122         listeners = listeners,123         specs = specs,124         testFilters = testFilters,125         specFilters = specFilters,126         tags = tags,127         scripts = scripts,128      )129   }130   @Deprecated("This class is deprecated since 5.0")131   fun withTags(tags: TagExpression?): KotestEngineLauncher {132      return KotestEngineLauncher(133         listeners = listeners,134         specs = specs,135         testFilters = testFilters,136         specFilters = specFilters,137         tags = tags,138         scripts = scripts,139      )140   }141}...

UnstableTestNameWithLeafIsolationTest.kt

Source:UnstableTestNameWithLeafIsolationTest.kt

...7//import io.kotest.core.spec.style.FunSpec8//import io.kotest.core.test.TestCase9//import io.kotest.core.test.TestResult10//import io.kotest.core.test.TestStatus11//import io.kotest.engine.KotestEngineLauncher12//import io.kotest.engine.listener.AbstractTestEngineListener13//import io.kotest.matchers.shouldBe14//import io.kotest.matchers.shouldNotBe15//16//@ExperimentalKotest17//@Isolate // sets global values via configuration so must be isolated18//class UnstableTestNameWithLeafIsolationTest : FunSpec() {19//   init {20//21//      val results = mutableListOf<TestStatus>()22//23//      val listener = object : AbstractTestEngineListener() {24//         override suspend fun testFinished(testCase: TestCase, result: TestResult) {25//            results.add(result.status)26//         }27//      }28//29//      beforeTest {30//         results.clear()31//      }32//33//      test("isolation mode leaf + regular classes should show all tests in data testing") {34//35//         KotestEngineLauncher()36//            .withListener(listener)37//            .withSpec(RegularClassAndLeafIsolation::class)38//            .launch()39//40//         results shouldBe listOf(41//            TestStatus.Success,42//            TestStatus.Failure,43//            TestStatus.Success,44//            TestStatus.Success,45//            TestStatus.Failure,46//            TestStatus.Success,47//            TestStatus.Success, // final success is the foo context48//         )49//      }50//51//      test("isolation mode leaf + data classes with regular class param should show all tests in data testing") {52//53//         KotestEngineLauncher()54//            .withListener(listener)55//            .withSpec(DataClassWithNonDataParameterAndLeafIsolation::class)56//            .launch()57//58//         results shouldBe listOf(59//            TestStatus.Success,60//            TestStatus.Failure,61//            TestStatus.Success,62//            TestStatus.Success,63//            TestStatus.Failure,64//            TestStatus.Success,65//            TestStatus.Success,  // final success is the foo context66//         )67//      }...

KotestEngineLauncher

Using AI Code Generation

1val launcher = KotestEngineLauncher()2launcher.withClasses(AssertionTest::class)3launcher.execute()4val launcher = KotestEngineLauncher()5launcher.withSpec(AssertionTest)6launcher.execute()7val launcher = KotestEngineLauncher()8launcher.withSpecClass(AssertionTest::class)9launcher.execute()10val launcher = KotestEngineLauncher()11launcher.withSpecClass(AssertionTest::class)12launcher.execute()13val launcher = KotestEngineLauncher()14launcher.withSpecClass(AssertionTest::class)15launcher.execute()16val launcher = KotestEngineLauncher()17launcher.withSpecClass(AssertionTest::class)18launcher.execute()19val launcher = KotestEngineLauncher()20launcher.withSpecClass(AssertionTest::class)21launcher.execute()22val launcher = KotestEngineLauncher()23launcher.withSpecClass(AssertionTest::class)24launcher.execute()25val launcher = KotestEngineLauncher()26launcher.withSpecClass(AssertionTest::class)27launcher.execute()28val launcher = KotestEngineLauncher()29launcher.withSpecClass(AssertionTest::class)30launcher.execute()31val launcher = KotestEngineLauncher()32launcher.withSpecClass(AssertionTest::class)33launcher.execute()34val launcher = KotestEngineLauncher()35launcher.withSpecClass(AssertionTest::class)36launcher.execute()37val launcher = KotestEngineLauncher()38launcher.withSpecClass(AssertionTest::class)

KotestEngineLauncher

Using AI Code Generation

1val launcher = KotestEngineLauncher()2launcher.withSpecs(MyTest::class)3launcher.withClasses(MyTest::class)4launcher.withPackages("com.example")5launcher.withTags("slow")6launcher.withTests("com.example.MyTest#mytest")7launcher.withListener(TestEngineListener { event -> println(event) })8launcher.withTestEngineListener(TestEngineListener { event -> println(event) })

KotestEngineLauncher

Using AI Code Generation

1import io.kotest.core.config.AbstractProjectConfig2import io.kotest.core.extensions.Extension3import io.kotest.core.extensions.TestCaseExtension4import io.kotest.core.spec.style.BehaviorSpec5import io.kotest.engine.KotestEngineLauncher6import io.kotest.engine.listener.TestEngineListener7import io.kotest.engine.spec.SpecExecutor8import io.kotest.engine.spec.materializeAndOrderRootTests9import io.kotest.engine.test.TestCaseExecutionListener10import io.kotest.engine.test.status.TestStatus11import io.kotest.engine.test.status.TestStatusListener12import io.kotest.engine.test.status.TestStatusState13import io.kotest.mpp.log14import io.kotest.mpp.sysprop15class MySpec : BehaviorSpec() {16    init {17        given("a test") {18            `when`("a test is executed") {19                then("the test should pass") {20                }21            }22        }23    }24}25class MyProjectConfig : AbstractProjectConfig() {26    override fun extensions(): List<Extension> {27        return listOf(MyExtension())28    }29}30class MyExtension : TestCaseExtension {31    override suspend fun intercept(32        execute: suspend (TestCase) -> TestResult33    ): TestResult {34        log("MyExtension - ${testCase.description.name}")35        return execute(testCase)36    }37}38fun main() {39    KotestEngineLauncher()40        .withSpec(MySpec::class)41        .withListener(MyTestEngineListener())42        .launch()43}44class MyTestEngineListener : TestEngineListener {45    override fun engineStarted(classes: List<KClass<out Spec>>) {46        log("engineStarted")47    }48    override fun engineFinished(t: List<Throwable>) {49        log("engineFinished")50    }51    override fun specStarted(kclass: KClass<out Spec>) {52        log("specStarted")53    }54    override fun specIgnored(kclass: KClass<out Spec>, reason: String?) {55        log("specIgnored")56    }57    override fun specFinished(kclass: KClass<out Spec>, t: Throwable?) {58        log("specFinished")59    }60    override fun testStarted(testCase: TestCase) {61        log("testStarted")62    }63    override fun testIgnored(testCase

KotestEngineLauncher

Using AI Code Generation

1import io.kotest.core.spec.style.FunSpec2import io.kotest.engine.KotestEngineLauncher3import io.kotest.matchers.shouldBe4class KotestEngineLauncherTest : FunSpec({5    test("KotestEngineLauncher") {6        KotestEngineLauncher().execute(listOf(ClassWithTestAnnotation::class))7    }8})9class ClassWithTestAnnotation {10    companion object {11    }12    fun test() {13    }14}15import io.kotest.core.spec.style.FunSpec16import io.kotest.engine.KotestEngineLauncher17import io.kotest.matchers.shouldBe18class KotestEngineLauncherTest : FunSpec({19    test("KotestEngineLauncher") {20        KotestEngineLauncher().execute(listOf(ClassWithSpecAnnotation::class))21    }22})23class ClassWithSpecAnnotation : FunSpec({24    test("test") {25    }26})27class ClassWithSpecAnnotation {28    companion object {29    }30}31import io.kotest.core.spec.style.FunSpec32import io.kotest.engine.KotestEngineLauncher33import io.kotest.matchers.shouldBe34class KotestEngineLauncherTest : FunSpec({35    test("Kot

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