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

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

TestCaseExecutor.kt

...24import 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,...

coroutineDispatcherFactoryInterceptor.kt

Source: coroutineDispatcherFactoryInterceptor.kt

...10import kotlinx.coroutines.test.TestCoroutineDispatcher11import kotlinx.coroutines.test.TestDispatcher12import kotlin.coroutines.coroutineContext13@ExperimentalStdlibApi14internal actual fun coroutineDispatcherFactoryInterceptor(15   defaultCoroutineDispatcherFactory: CoroutineDispatcherFactory16): TestExecutionInterceptor = CoroutineDispatcherFactoryInterceptor(defaultCoroutineDispatcherFactory)17/**18 * Switches execution onto a dispatcher provided by a [CoroutineDispatcherFactory].19 *20 * If the coroutine is an instance of [TestDispatcher] then the coroutine will not be changed.21 */22@ExperimentalStdlibApi23internal class CoroutineDispatcherFactoryInterceptor(24   private val defaultCoroutineDispatcherFactory: CoroutineDispatcherFactory25) : TestExecutionInterceptor {26   private val logger = Logger(CoroutineDispatcherFactoryInterceptor::class)27   override suspend fun intercept(28      testCase: TestCase,...

CoroutineDispatcherInterceptorTest.kt

Source: CoroutineDispatcherInterceptorTest.kt

1package com.sksamuel.kotest.engine.test.interceptors2import io.kotest.core.concurrency.CoroutineDispatcherFactory3import io.kotest.core.descriptors.append4import io.kotest.core.descriptors.toDescriptor5import io.kotest.core.names.TestName6import io.kotest.core.source.sourceRef7import io.kotest.core.spec.style.DescribeSpec8import io.kotest.core.test.TestCase9import io.kotest.core.test.TestResult10import io.kotest.core.test.TestType11import io.kotest.engine.test.interceptors.CoroutineDispatcherFactoryInterceptor12import io.kotest.engine.test.scopes.NoopTestScope13import io.kotest.matchers.string.shouldStartWith14import kotlinx.coroutines.asCoroutineDispatcher15import kotlinx.coroutines.withContext16import java.util.concurrent.Executors17import kotlin.time.Duration.Companion.milliseconds18@ExperimentalStdlibApi19class CoroutineDispatcherInterceptorTest : DescribeSpec() {20   init {21      describe("CoroutineDispatcherInterceptor") {22         it("should dispatch to coroutineDispatcher") {23            val tc = TestCase(24               InvocationCountCheckInterceptorTest::class.toDescriptor().append("foo"),25               TestName("foo"),26               InvocationCountCheckInterceptorTest(),27               {},28               sourceRef(),29               TestType.Container,30            )31            val controller = object : CoroutineDispatcherFactory {32               override suspend fun <T> withDispatcher(testCase: TestCase, f: suspend () -> T): T {33                  val executor = Executors.newSingleThreadExecutor {34                     val t = Thread(it)35                     t.name = "foo"36                     t37                  }38                  return withContext(executor.asCoroutineDispatcher()) {39                     f()40                  }41               }42            }43            CoroutineDispatcherFactoryInterceptor(controller).intercept(44               tc,45               NoopTestScope(tc, coroutineContext)46            ) { _, _ ->47               Thread.currentThread().name.shouldStartWith("foo")48               TestResult.Success(0.milliseconds)49            }50         }51      }52   }53}...

interceptors.kt

Source: interceptors.kt

2import 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")...

coroutineDispatcherFactoryInterceptor

Using AI Code Generation

1val interceptor = coroutineDispatcherFactoryInterceptor()2val spec = createSpec {3interceptors(interceptor)4test("test a") {5}6test("test b") {7}8}9val engine = TestEngine(listOf(spec), emptyList())10val results = engine.execute()

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