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| 1 | +/* |
| 2 | + * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| 3 | + */ |
| 4 | + |
| 5 | +package kotlinx.coroutines.channels |
| 6 | + |
| 7 | +import kotlinx.coroutines.* |
| 8 | +import kotlin.test.* |
| 9 | + |
| 10 | +class ChannelReceiveOrClosedTest : TestBase() { |
| 11 | + @Test |
| 12 | + fun testChannelOfThrowables() = runTest { |
| 13 | + val channel = Channel<Throwable>() |
| 14 | + launch { |
| 15 | + channel.send(TestException1()) |
| 16 | + channel.close(TestException2()) |
| 17 | + } |
| 18 | + |
| 19 | + val element = channel.receiveOrClosed() |
| 20 | + assertTrue(element.isValue) |
| 21 | + assertTrue(element.value is TestException1) |
| 22 | + assertTrue(element.valueOrNull is TestException1) |
| 23 | + |
| 24 | + val closed = channel.receiveOrClosed() |
| 25 | + assertTrue(closed.isClosed) |
| 26 | + assertTrue(closed.closeCause is TestException2) |
| 27 | + } |
| 28 | + |
| 29 | + @Test |
| 30 | + @Suppress("ReplaceAssertBooleanWithAssertEquality") // inline classes test |
| 31 | + fun testNullableIntChanel() = runTest { |
| 32 | + val channel = Channel<Int?>() |
| 33 | + launch { |
| 34 | + expect(2) |
| 35 | + channel.send(1) |
| 36 | + expect(3) |
| 37 | + channel.send(null) |
| 38 | + |
| 39 | + expect(6) |
| 40 | + channel.close() |
| 41 | + } |
| 42 | + |
| 43 | + expect(1) |
| 44 | + val element = channel.receiveOrClosed() |
| 45 | + assertTrue(element.isValue) |
| 46 | + assertEquals(1, element.value) |
| 47 | + assertEquals(1, element.valueOrNull) |
| 48 | + assertEquals("Value(1)", element.toString()) |
| 49 | + assertTrue(ValueOrClosed.value(1) == element) // Don't box |
| 50 | + |
| 51 | + expect(4) |
| 52 | + val nullElement = channel.receiveOrClosed() |
| 53 | + assertTrue(nullElement.isValue) |
| 54 | + assertNull(nullElement.value) |
| 55 | + assertNull(nullElement.valueOrNull) |
| 56 | + assertEquals("Value(null)", nullElement.toString()) |
| 57 | + assertTrue(ValueOrClosed.value(null) == nullElement) // Don't box |
| 58 | + |
| 59 | + expect(5) |
| 60 | + val closed = channel.receiveOrClosed() |
| 61 | + assertTrue(closed.isClosed) |
| 62 | + |
| 63 | + val closed2 = channel.receiveOrClosed() |
| 64 | + assertTrue(closed2.isClosed) |
| 65 | + assertTrue(closed2.closeCause is ClosedReceiveChannelException) |
| 66 | + finish(7) |
| 67 | + } |
| 68 | + |
| 69 | + @Test |
| 70 | + @ExperimentalUnsignedTypes |
| 71 | + fun testUIntChannel() = runTest { |
| 72 | + val channel = Channel<UInt>() |
| 73 | + launch { |
| 74 | + expect(2) |
| 75 | + channel.send(1u) |
| 76 | + yield() |
| 77 | + expect(4) |
| 78 | + channel.send((Long.MAX_VALUE - 1).toUInt()) |
| 79 | + expect(5) |
| 80 | + } |
| 81 | + |
| 82 | + expect(1) |
| 83 | + val element = channel.receiveOrClosed() |
| 84 | + assertEquals(1u, element.value) |
| 85 | + |
| 86 | + expect(3) |
| 87 | + val element2 = channel.receiveOrClosed() |
| 88 | + assertEquals((Long.MAX_VALUE - 1).toUInt(), element2.value) |
| 89 | + finish(6) |
| 90 | + } |
| 91 | + |
| 92 | + @Test |
| 93 | + fun testCancelChannel() = runTest { |
| 94 | + val channel = Channel<Boolean>() |
| 95 | + launch { |
| 96 | + expect(2) |
| 97 | + channel.cancel() |
| 98 | + } |
| 99 | + |
| 100 | + expect(1) |
| 101 | + val closed = channel.receiveOrClosed() |
| 102 | + assertTrue(closed.isClosed) |
| 103 | + assertTrue(closed.closeCause is ClosedReceiveChannelException) |
| 104 | + finish(3) |
| 105 | + } |
| 106 | + |
| 107 | + @Test |
| 108 | + @ExperimentalUnsignedTypes |
| 109 | + fun testReceiveResultChannel() = runTest { |
| 110 | + val channel = Channel<ValueOrClosed<UInt>>() |
| 111 | + launch { |
| 112 | + channel.send(ValueOrClosed.value(1u)) |
| 113 | + channel.send(ValueOrClosed.closed(TestException1())) |
| 114 | + channel.close(TestException2()) |
| 115 | + } |
| 116 | + |
| 117 | + val intResult = channel.receiveOrClosed() |
| 118 | + assertTrue(intResult.isValue) |
| 119 | + assertEquals(1u, intResult.value.value) |
| 120 | + |
| 121 | + val closeCauseResult = channel.receiveOrClosed() |
| 122 | + assertTrue(closeCauseResult.isValue) |
| 123 | + assertTrue(closeCauseResult.value.closeCause is TestException1) |
| 124 | + |
| 125 | + val closeCause = channel.receiveOrClosed() |
| 126 | + assertTrue(closeCause.isClosed) |
| 127 | + assertTrue(closeCause.closeCause is TestException2) |
| 128 | + assertFailsWith<TestException2> { closeCause.valueOrThrow } |
| 129 | + } |
| 130 | + |
| 131 | + @Test |
| 132 | + fun testToString() = runTest { |
| 133 | + val channel = Channel<String>(1) |
| 134 | + channel.send("message") |
| 135 | + channel.close(TestException1()) |
| 136 | + assertEquals("Value(message)", channel.receiveOrClosed().toString()) |
| 137 | + // toString implementation for exception differs on every platform |
| 138 | + val str = channel.receiveOrClosed().toString() |
| 139 | + assertTrue(str.matches("Closed\\(.*TestException1\\)".toRegex())) |
| 140 | + } |
| 141 | +} |
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