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/*
* Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
package kotlinx.coroutines.selects
import kotlinx.coroutines.*
import kotlin.test.*
class SelectTimeoutTest : TestBase() {
@Test
fun testBasic() = runTest {
expect(1)
val result = select<String> {
onTimeout(1000) {
expectUnreached()
"FAIL"
}
onTimeout(100) {
expect(2)
"OK"
}
onTimeout(500) {
expectUnreached()
"FAIL"
}
}
assertEquals("OK", result)
finish(3)
}
@Test
fun testZeroTimeout() = runTest {
expect(1)
val result = select<String> {
onTimeout(1000) {
expectUnreached()
"FAIL"
}
onTimeout(0) {
expect(2)
"OK"
}
}
assertEquals("OK", result)
finish(3)
}
@Test
fun testNegativeTimeout() = runTest {
expect(1)
val result = select<String> {
onTimeout(1000) {
expectUnreached()
"FAIL"
}
onTimeout(-10) {
expect(2)
"OK"
}
}
assertEquals("OK", result)
finish(3)
}
@Test
fun testUnbiasedNegativeTimeout() = runTest {
val counters = intArrayOf(0, 0, 0)
val iterations =10_000
for (i in 0..iterations) {
val result = selectUnbiased<Int> {
onTimeout(-1000) {
0
}
onTimeout(0) {
1
}
onTimeout(1000) {
expectUnreached()
2
}
}
++counters[result]
}
assertEquals(0, counters[2])
assertTrue { counters[0] > iterations / 4 }
assertTrue { counters[1] > iterations / 4 }
}
}
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