| /* |
| * 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 |
| |
| import kotlin.test.* |
| |
| class MessageQueueTest { |
| private var scheduled = false |
| private val processed = mutableListOf<Int>() |
| |
| private val queue = object : MessageQueue() { |
| override fun schedule() { |
| assertFalse(scheduled) |
| scheduled = true |
| } |
| } |
| |
| inner class Box(val i: Int): Runnable { |
| override fun run() { |
| processed += i |
| } |
| } |
| |
| inner class ReBox(val i: Int): Runnable { |
| override fun run() { |
| processed += i |
| queue.enqueue(Box(10 + i)) |
| } |
| } |
| |
| @Test |
| fun testBasic() { |
| assertTrue(queue.isEmpty) |
| queue.enqueue(Box(1)) |
| assertFalse(queue.isEmpty) |
| assertTrue(scheduled) |
| queue.enqueue(Box(2)) |
| assertFalse(queue.isEmpty) |
| scheduled = false |
| queue.process() |
| assertEquals(listOf(1, 2), processed) |
| assertFalse(scheduled) |
| assertTrue(queue.isEmpty) |
| } |
| |
| @Test fun testRescheduleFromProcess() { |
| assertTrue(queue.isEmpty) |
| queue.enqueue(ReBox(1)) |
| assertFalse(queue.isEmpty) |
| assertTrue(scheduled) |
| queue.enqueue(ReBox(2)) |
| assertFalse(queue.isEmpty) |
| scheduled = false |
| queue.process() |
| assertEquals(listOf(1, 2, 11, 12), processed) |
| assertFalse(scheduled) |
| assertTrue(queue.isEmpty) |
| } |
| |
| @Test |
| fun testResizeAndWrap() { |
| repeat(10) { phase -> |
| val n = 10 * (phase + 1) |
| assertTrue(queue.isEmpty) |
| repeat(n) { |
| queue.enqueue(Box(it)) |
| assertFalse(queue.isEmpty) |
| assertTrue(scheduled) |
| } |
| var countYields = 0 |
| while (scheduled) { |
| scheduled = false |
| queue.process() |
| countYields++ |
| } |
| assertEquals(List(n) { it }, processed) |
| assertEquals((n + queue.yieldEvery - 1) / queue.yieldEvery, countYields) |
| processed.clear() |
| } |
| } |
| } |