| /* |
| * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| |
| package kotlinx.coroutines.experimental.selects |
| |
| import kotlinx.coroutines.experimental.* |
| import kotlinx.coroutines.experimental.sync.* |
| import kotlin.coroutines.experimental.* |
| import kotlin.test.* |
| |
| class SelectMutexTest : TestBase() { |
| @Test |
| fun testSelectLock() = runTest { |
| val mutex = Mutex() |
| expect(1) |
| launch(coroutineContext) { // ensure that it is not scheduled earlier than needed |
| finish(4) // after main exits |
| } |
| val res = select<String> { |
| mutex.onLock { |
| assertTrue(mutex.isLocked) |
| expect(2) |
| "OK" |
| } |
| } |
| assertEquals("OK", res) |
| expect(3) |
| // will wait for the first coroutine |
| } |
| |
| @Test |
| fun testSelectLockWait() = runTest { |
| val mutex = Mutex(true) // locked |
| expect(1) |
| launch(coroutineContext) { |
| expect(3) |
| val res = select<String> { |
| // will suspended |
| mutex.onLock { |
| assertTrue(mutex.isLocked) |
| expect(6) |
| "OK" |
| } |
| } |
| assertEquals("OK", res) |
| expect(7) |
| } |
| expect(2) |
| yield() // to launched coroutine |
| expect(4) |
| mutex.unlock() |
| expect(5) |
| yield() // to resumed select |
| finish(8) |
| } |
| } |