| /* |
| * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| |
| @file:Suppress("DeferredResultUnused") |
| |
| package kotlinx.coroutines.exceptions |
| |
| import kotlinx.coroutines.* |
| import org.junit.Test |
| import kotlin.test.* |
| |
| class StackTraceRecoveryNestedTest : TestBase() { |
| |
| @Test |
| fun testNestedAsync() = runTest { |
| val rootAsync = async(NonCancellable) { |
| expect(1) |
| |
| // Just a noise for unwrapping |
| async { |
| expect(2) |
| delay(Long.MAX_VALUE) |
| } |
| |
| // Do not catch, fail on cancellation |
| async { |
| expect(3) |
| async { |
| expect(4) |
| delay(Long.MAX_VALUE) |
| } |
| |
| async { |
| expect(5) |
| // 1) await(), catch, verify and rethrow |
| try { |
| val nested = async { |
| expect(6) |
| throw RecoverableTestException() |
| } |
| |
| nested.awaitNested() |
| } catch (e: RecoverableTestException) { |
| expect(7) |
| e.verifyException( |
| "await\$suspendImpl", |
| "awaitNested", |
| "\$testNestedAsync\$1\$rootAsync\$1\$2\$2.invokeSuspend" |
| ) |
| // Just rethrow it |
| throw e |
| } |
| } |
| } |
| } |
| |
| try { |
| rootAsync.awaitRootLevel() |
| } catch (e: RecoverableTestException) { |
| e.verifyException("await\$suspendImpl", "awaitRootLevel") |
| finish(8) |
| } |
| } |
| |
| private suspend fun Deferred<*>.awaitRootLevel() { |
| await() |
| assertTrue(true) |
| } |
| |
| private suspend fun Deferred<*>.awaitNested() { |
| await() |
| assertTrue(true) |
| } |
| |
| private fun RecoverableTestException.verifyException(vararg expectedTraceElements: String) { |
| // It is "recovered" only once |
| assertEquals(1, depth()) |
| val stacktrace = stackTrace.map { it.methodName }.toSet() |
| assertTrue(expectedTraceElements.all { stacktrace.contains(it) }) |
| } |
| |
| private fun Throwable.depth(): Int { |
| val cause = cause ?: return 0 |
| return 1 + cause.depth() |
| } |
| } |