/
BroadcastTest.kt
79 lines (74 loc) · 2.03 KB
/
BroadcastTest.kt
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/*
* Copyright 2016-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
package kotlinx.coroutines.channels
import kotlinx.coroutines.*
import kotlin.test.*
class BroadcastTest : TestBase() {
@Test
fun testBroadcastBasic() = runTest {
expect(1)
val b = broadcast {
expect(4)
send(1) // goes to receiver
expect(5)
send(2) // goes to buffer
expect(6)
send(3) // suspends, will not be consumes, but will not be cancelled either
expect(10)
}
yield() // has no effect, because default is lazy
expect(2)
b.consume {
expect(3)
assertEquals(1, receive()) // suspends
expect(7)
assertEquals(2, receive()) // suspends
expect(8)
}
expect(9)
yield() // to broadcast
finish(11)
}
/**
* See https://github.com/Kotlin/kotlinx.coroutines/issues/1713
*/
@Test
fun testChannelBroadcastLazyClose() = runTest {
expect(1)
val a = produce {
expect(3)
try {
send("MSG")
} finally {
expect(5)
}
expectUnreached()
}
expect(2)
yield() // to produce
val b = a.broadcast()
b.close()
expect(4)
yield() // to abort produce
assertTrue(a.isClosedForReceive) // the source channel was consumed
finish(6)
}
@Test
fun testChannelBroadcastEagerClose() = runTest {
expect(1)
val a = produce<Unit> {
expect(3)
yield() // back to main
expectUnreached() // will be cancelled
}
expect(2)
val b = a.broadcast(start = CoroutineStart.DEFAULT)
yield() // to produce
expect(4)
b.close()
yield() // to produce (cancelled)
assertTrue(a.isClosedForReceive) // the source channel was consumed
finish(5)
}
}