| /* |
| * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| |
| package kotlinx.coroutines.reactive |
| |
| import kotlinx.coroutines.* |
| import kotlinx.coroutines.selects.* |
| import org.junit.* |
| import org.junit.Assert.* |
| import org.junit.runner.* |
| import org.junit.runners.* |
| |
| @RunWith(Parameterized::class) |
| class PublisherSubscriptionSelectTest(private val request: Int) : TestBase() { |
| companion object { |
| @Parameterized.Parameters(name = "request = {0}") |
| @JvmStatic |
| fun params(): Collection<Array<Any>> = listOf(0, 1, 10).map { arrayOf<Any>(it) } |
| } |
| |
| @Test |
| fun testSelect() = runTest { |
| // source with n ints |
| val n = 1000 * stressTestMultiplier |
| val source = publish { repeat(n) { send(it) } } |
| var a = 0 |
| var b = 0 |
| // open two subs |
| val channelA = source.openSubscription(request) |
| val channelB = source.openSubscription(request) |
| loop@ while (true) { |
| val done: Int = select { |
| channelA.onReceiveOrNull { |
| if (it != null) assertEquals(a++, it) |
| if (it == null) 0 else 1 |
| } |
| channelB.onReceiveOrNull { |
| if (it != null) assertEquals(b++, it) |
| if (it == null) 0 else 2 |
| } |
| } |
| when (done) { |
| 0 -> break@loop |
| 1 -> { |
| val r = channelB.receiveOrNull() |
| if (r != null) assertEquals(b++, r) |
| } |
| 2 -> { |
| val r = channelA.receiveOrNull() |
| if (r != null) assertEquals(a++, r) |
| } |
| } |
| } |
| |
| channelA.cancel() |
| channelB.cancel() |
| // should receive one of them fully |
| assertTrue(a == n || b == n) |
| } |
| } |