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

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

TestCaseExecutor.kt

Source:TestCaseExecutor.kt Github

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...18import 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)...

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TestCoroutineInterceptor.kt

Source:TestCoroutineInterceptor.kt Github

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...13 * This setting cannot be nested.14 */15@ExperimentalCoroutinesApi16@ExperimentalStdlibApi17actual class TestCoroutineInterceptor : TestExecutionInterceptor {18 private val logger = Logger(TestCoroutineInterceptor::class)19 override suspend fun intercept(20 testCase: TestCase,21 scope: TestScope,22 test: suspend (TestCase, TestScope) -> TestResult23 ): TestResult {24 var result: TestResult = TestResult.Ignored25 logger.log { Pair(testCase.name.testName, "Switching context to coroutines runTest") }26 runTest {27 result = test(testCase, scope.withCoroutineContext(this.coroutineContext))28 }29 return result30 }31}...

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TestDispatcherInterceptor.kt

Source:TestDispatcherInterceptor.kt Github

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...8 scope: TestScope,9 test: suspend (TestCase, TestScope) -> TestResult10 ): TestResult = test(testCase, scope)11}12actual class TestCoroutineInterceptor : TestExecutionInterceptor {13 override suspend fun intercept(14 testCase: TestCase,15 scope: TestScope,16 test: suspend (TestCase, TestScope) -> TestResult17 ): TestResult = test(testCase, scope)18}...

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TestCoroutineInterceptor

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1val interceptor = TestCoroutineInterceptor()2interceptor.intercept { (testCase, execute) ->3val result = execute(testCase)4}5val dispatcher = TestCoroutineDispatcher()6dispatcher.intercept { (testCase, execute) ->7val result = execute(testCase)8}9val scope = TestCoroutineScope()10scope.intercept { (testCase, execute) ->11val result = execute(testCase)12}13val exceptionHandler = TestCoroutineExceptionHandler()14exceptionHandler.intercept { (testCase, execute) ->15val result = execute(testCase)16}17val dispatcher = TestCoroutineDispatcher()18val scope = TestCoroutineScope(dispatcher)19scope.intercept { (testCase, execute) ->20val result = execute(testCase)21}22val exceptionHandler = TestCoroutineExceptionHandler()23val scope = TestCoroutineScope(exceptionHandler)24scope.intercept { (testCase, execute) ->25val result = execute(testCase)26}27val dispatcher = TestCoroutineDispatcher()28val exceptionHandler = TestCoroutineExceptionHandler()29val scope = TestCoroutineScope(dispatcher + exceptionHandler)30scope.intercept { (testCase, execute) ->31val result = execute(testCase)32}33val dispatcher = TestCoroutineDispatcher()34val exceptionHandler = TestCoroutineExceptionHandler()35val scope = TestCoroutineScope(dispatcher + exceptionHandler)

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TestCoroutineInterceptor

Using AI Code Generation

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1val interceptor = TestCoroutineInterceptor()2interceptor.intercept { (testCase, execute) ->3val result = execute(testCase)4}5val interceptor = TestCoroutineInterceptor()6interceptor.intercept { (testCase, execute) ->7val result = execute(testCase)8}9at io.kotest.engine.test.interceptors.TimeoutTestExecutionInterceptor.intercept(TimeoutTestExecutionInterceptor.kt:26)10at io.kotest.engine.test.interceptors.TimeoutTestExecutionInterceptor.intercept(TimeoutTestExecutionInterceptor.kt:12)11at io.kotest.engine.test.TestCaseExecutor$executeAndWaitForCompletion$2.invokeSuspend(TestCaseExecutor.kt:186)12at io.kotest.engine.test.TestCaseExecutor$executeAndWaitForCompletion$2.invoke(TestCaseExecutor.kt)13at io.kotest.engine.test.TestCaseExecutor$executeAndWaitForCompletion$2.invoke(TestCaseExecutor.kt)14at io.kotest.engine.test.TestCaseExecutor.executeAndWaitForCompletion(TestCaseExecutor.kt:197)15at io.kotest.engine.test.TestCaseExecutor.executeTestCase(TestCaseExecutor.kt:84)16at io.kotest.engine.test.TestCaseExecutor$invoke$2$2$2.invokeSuspend(TestCaseExecutor.kt:68)17at io.kotest.engine.test.TestCaseExecutor$invoke$2$2$2.invoke(TestCaseExecutor.kt)18at io.kotest.engine.test.TestCaseExecutor$invoke$2$2$2.invoke(TestCaseExecutor.kt)19at io.kotest.engine.test.TestCaseExecutor.invoke(TestCaseExecutor.kt:78)20at io.kotest.engine.spec.SpecRunner$executeTest$1$1.invokeSuspend(SpecRunner.kt:231)21at io.kotest.engine.spec.SpecRunner$executeTest$1$1.invoke(SpecRunner.kt)22at io.kotest.engine.spec.SpecRunner$executeTest$1$1.invoke(SpecRunner.kt)

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