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How to use CoroutineErrorCollectorInterceptor class of io.kotest.engine.test.interceptors package

Best Kotest code snippet using io.kotest.engine.test.interceptors.CoroutineErrorCollectorInterceptor

TestCaseExecutor.kt

Source:TestCaseExecutor.kt

1@file:OptIn(ExperimentalStdlibApi::class)2package io.kotest.engine.test3import io.kotest.common.ExperimentalKotest4import io.kotest.common.Platform5import io.kotest.common.platform6import io.kotest.core.concurrency.CoroutineDispatcherFactory7import io.kotest.core.config.ProjectConfiguration8import io.kotest.core.test.TestCase9import io.kotest.core.test.TestResult10import io.kotest.core.test.TestScope11import io.kotest.engine.concurrency.NoopCoroutineDispatcherFactory12import io.kotest.engine.test.interceptors.AssertionModeInterceptor13import io.kotest.engine.test.interceptors.CoroutineDebugProbeInterceptor14import io.kotest.engine.test.interceptors.CoroutineLoggingInterceptor15import io.kotest.engine.test.interceptors.EnabledCheckInterceptor16import io.kotest.engine.test.interceptors.InvocationCountCheckInterceptor17import io.kotest.engine.test.interceptors.InvocationTimeoutInterceptor18import io.kotest.engine.test.interceptors.LifecycleInterceptor19import io.kotest.engine.test.interceptors.SoftAssertInterceptor20import io.kotest.engine.test.interceptors.SupervisorScopeInterceptor21import io.kotest.engine.test.interceptors.TestCaseExtensionInterceptor22import io.kotest.engine.test.interceptors.TestCoroutineInterceptor23import io.kotest.engine.test.interceptors.TestDispatcherInterceptor24import io.kotest.engine.test.interceptors.TestFinishedInterceptor25import io.kotest.engine.test.interceptors.TestPathContextInterceptor26import io.kotest.engine.test.interceptors.TimeoutInterceptor27import io.kotest.engine.test.interceptors.blockedThreadTimeoutInterceptor28import io.kotest.engine.test.interceptors.coroutineDispatcherFactoryInterceptor29import io.kotest.engine.test.interceptors.coroutineErrorCollectorInterceptor30import io.kotest.mpp.Logger31import kotlin.time.Duration32import kotlin.time.TimeSource33/**34 * Executes a single [TestCase].35 *36 * Uses a [TestCaseExecutionListener] to notify callers of events in the test lifecycle.37 *38 */39@OptIn(ExperimentalKotest::class)40class TestCaseExecutor(41   private val listener: TestCaseExecutionListener,42   private val defaultCoroutineDispatcherFactory: CoroutineDispatcherFactory = NoopCoroutineDispatcherFactory,43   private val configuration: ProjectConfiguration,44) {45   private val logger = Logger(TestCaseExecutor::class)46   suspend fun execute(testCase: TestCase, testScope: TestScope): TestResult {47      val timeMark = TimeSource.Monotonic.markNow()48      val interceptors = listOfNotNull(49         TestPathContextInterceptor,50         TestFinishedInterceptor(listener),51         InvocationCountCheckInterceptor,52         SupervisorScopeInterceptor,53         if (platform == Platform.JVM) coroutineDispatcherFactoryInterceptor(defaultCoroutineDispatcherFactory) else null,54         if (platform == Platform.JVM) coroutineErrorCollectorInterceptor() else null,55         TestCaseExtensionInterceptor(configuration.registry),56         EnabledCheckInterceptor(configuration),57         LifecycleInterceptor(listener, timeMark, configuration.registry),58         AssertionModeInterceptor,59         SoftAssertInterceptor(),60         CoroutineLoggingInterceptor(configuration),61         if (platform == Platform.JVM) blockedThreadTimeoutInterceptor(configuration, timeMark) else null,62         TimeoutInterceptor(timeMark),63         TestInvocationInterceptor(configuration.registry, timeMark),64         InvocationTimeoutInterceptor,65         if (platform == Platform.JVM && testCase.config.testCoroutineDispatcher) TestDispatcherInterceptor() else null,66         if (platform == Platform.JVM && testCase.config.coroutineTestScope) TestCoroutineInterceptor() else null,67         CoroutineDebugProbeInterceptor,68      )69      val innerExecute: suspend (TestCase, TestScope) -> TestResult = { tc, scope ->70         logger.log { Pair(testCase.name.testName, "Executing test") }71         tc.test(scope)72         try {73            TestResult.Success(timeMark.elapsedNow())74         } catch (e: Throwable) {75            TestResult.Success(Duration.ZERO) // workaround for kotlin 1.576         }77      }78      return interceptors.foldRight(innerExecute) { ext, fn ->79         { tc, sc -> ext.intercept(tc, sc, fn) }80      }.invoke(testCase, testScope)81   }82}...

CoroutineErrorCollectorInterceptor.kt

Source:CoroutineErrorCollectorInterceptor.kt

...5import io.kotest.core.test.TestScope6import io.kotest.mpp.Logger7import kotlinx.coroutines.withContext8internal actual fun coroutineErrorCollectorInterceptor(): TestExecutionInterceptor =9   CoroutineErrorCollectorInterceptor10/**11 * A [TestExecutionInterceptor] for keeping the error collector synchronized with thread-switching coroutines.12 * Note: This is a JVM only option.13 */14internal object CoroutineErrorCollectorInterceptor : TestExecutionInterceptor {15   private val logger = Logger(CoroutineErrorCollectorInterceptor::class)16   override suspend fun intercept(17      testCase: TestCase,18      scope: TestScope,19      test: suspend (TestCase, TestScope) -> TestResult20   ): TestResult {21      logger.log { Pair(testCase.name.testName, "Adding $errorCollectorContextElement to coroutine context") }22      return withContext(errorCollectorContextElement) {23         test(testCase, scope)24      }25   }26}...

interceptors.kt

Source:interceptors.kt

1package io.kotest.engine.test.interceptors2import io.kotest.common.platform3import io.kotest.core.concurrency.CoroutineDispatcherFactory4import io.kotest.core.config.ProjectConfiguration5import kotlin.time.TimeMark6internal actual fun coroutineDispatcherFactoryInterceptor(7   defaultCoroutineDispatcherFactory: CoroutineDispatcherFactory8): TestExecutionInterceptor = error("Unsupported on $platform")9internal actual fun blockedThreadTimeoutInterceptor(10   configuration: ProjectConfiguration,11   start: TimeMark,12): TestExecutionInterceptor = error("Unsupported on $platform")13internal actual fun coroutineErrorCollectorInterceptor(): TestExecutionInterceptor =14   error("Unsupported on $platform")...

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