| /* |
| * Copyright 2016-2017 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the 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) |
| } |
| } |