1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
/*
* Copyright 2016-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
package kotlinx.coroutines.exceptions
import kotlinx.coroutines.*
import kotlinx.coroutines.channels.*
import kotlinx.coroutines.intrinsics.*
import org.junit.Test
import java.lang.RuntimeException
import java.util.concurrent.*
import kotlin.concurrent.*
import kotlin.coroutines.*
import kotlin.test.*
/*
* All stacktrace validation skips line numbers
*/
class StackTraceRecoveryTest : TestBase() {
@Test
fun testAsync() = runTest {
fun createDeferred(depth: Int): Deferred<*> {
return if (depth == 0) {
async<Unit>(coroutineContext + NonCancellable) {
throw ExecutionException(null)
}
} else {
createDeferred(depth - 1)
}
}
val deferred = createDeferred(3)
val traces = listOf(
"java.util.concurrent.ExecutionException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testAsync\$1\$1\$1.invokeSuspend(StackTraceRecoveryTest.kt:99)\n" +
"\t(Coroutine boundary)\n" +
"\tat kotlinx.coroutines.DeferredCoroutine.await\$suspendImpl(Builders.common.kt:99)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.oneMoreNestedMethod(StackTraceRecoveryTest.kt:49)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.nestedMethod(StackTraceRecoveryTest.kt:44)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testAsync\$1.invokeSuspend(StackTraceRecoveryTest.kt:17)\n",
"Caused by: java.util.concurrent.ExecutionException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testAsync\$1\$1\$1.invokeSuspend(StackTraceRecoveryTest.kt:21)\n" +
"\tat kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:32)\n"
)
nestedMethod(deferred, *traces.toTypedArray())
deferred.join()
}
@Test
fun testCompletedAsync() = runTest {
val deferred = async<Unit>(coroutineContext + NonCancellable) {
throw ExecutionException(null)
}
deferred.join()
val stacktrace = listOf(
"java.util.concurrent.ExecutionException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testCompletedAsync\$1\$deferred\$1.invokeSuspend(StackTraceRecoveryTest.kt:44)\n" +
"\t(Coroutine boundary)\n" +
"\tat kotlinx.coroutines.DeferredCoroutine.await\$suspendImpl(Builders.common.kt:99)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.oneMoreNestedMethod(StackTraceRecoveryTest.kt:81)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.nestedMethod(StackTraceRecoveryTest.kt:75)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testCompletedAsync\$1.invokeSuspend(StackTraceRecoveryTest.kt:71)",
"Caused by: java.util.concurrent.ExecutionException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testCompletedAsync\$1\$deferred\$1.invokeSuspend(StackTraceRecoveryTest.kt:44)\n" +
"\tat kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:32)"
)
nestedMethod(deferred, *stacktrace.toTypedArray())
}
private suspend fun nestedMethod(deferred: Deferred<*>, vararg traces: String) {
oneMoreNestedMethod(deferred, *traces)
assertTrue(true) // Prevent tail-call optimization
}
private suspend fun oneMoreNestedMethod(deferred: Deferred<*>, vararg traces: String) {
try {
deferred.await()
expectUnreached()
} catch (e: ExecutionException) {
verifyStackTrace(e, *traces)
}
}
@Test
fun testWithContext() = runTest {
val deferred = async<Unit>(NonCancellable, start = CoroutineStart.LAZY) {
throw RecoverableTestException()
}
outerMethod(deferred,
"kotlinx.coroutines.RecoverableTestException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testWithContext\$1\$deferred\$1.invokeSuspend(StackTraceRecoveryTest.kt:143)\n" +
"\t(Coroutine boundary)\n" +
"\tat kotlinx.coroutines.DeferredCoroutine.await\$suspendImpl(Builders.common.kt:99)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.innerMethod(StackTraceRecoveryTest.kt:158)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$outerMethod\$2.invokeSuspend(StackTraceRecoveryTest.kt:151)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.outerMethod(StackTraceRecoveryTest.kt:150)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testWithContext\$1.invokeSuspend(StackTraceRecoveryTest.kt:141)\n",
"Caused by: kotlinx.coroutines.RecoverableTestException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testWithContext\$1\$deferred\$1.invokeSuspend(StackTraceRecoveryTest.kt:143)\n" +
"\tat kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:32)\n")
deferred.join()
}
private suspend fun outerMethod(deferred: Deferred<*>, vararg traces: String) {
withContext(Dispatchers.IO) {
innerMethod(deferred, *traces)
}
assertTrue(true)
}
private suspend fun innerMethod(deferred: Deferred<*>, vararg traces: String) {
try {
deferred.await()
expectUnreached()
} catch (e: RecoverableTestException) {
verifyStackTrace(e, *traces)
}
}
@Test
fun testCoroutineScope() = runTest {
val deferred = async<Unit>(NonCancellable, start = CoroutineStart.LAZY) {
throw RecoverableTestException()
}
outerScopedMethod(deferred,
"kotlinx.coroutines.RecoverableTestException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testCoroutineScope\$1\$deferred\$1.invokeSuspend(StackTraceRecoveryTest.kt:143)\n" +
"\t(Coroutine boundary)\n" +
"\tat kotlinx.coroutines.DeferredCoroutine.await\$suspendImpl(Builders.common.kt:99)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.innerMethod(StackTraceRecoveryTest.kt:158)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$outerScopedMethod\$2\$1.invokeSuspend(StackTraceRecoveryTest.kt:193)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$outerScopedMethod\$2.invokeSuspend(StackTraceRecoveryTest.kt:151)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testCoroutineScope\$1.invokeSuspend(StackTraceRecoveryTest.kt:141)\n",
"Caused by: kotlinx.coroutines.RecoverableTestException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testCoroutineScope\$1\$deferred\$1.invokeSuspend(StackTraceRecoveryTest.kt:143)\n" +
"\tat kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:32)\n")
deferred.join()
}
public class TrickyException() : Throwable() {
// To be sure ctor is never invoked
@Suppress("UNUSED", "UNUSED_PARAMETER")
private constructor(message: String, cause: Throwable): this() {
error("Should never be called")
}
override fun initCause(cause: Throwable?): Throwable {
error("Can't call initCause")
}
}
@Test
fun testThrowingInitCause() = runTest {
val deferred = async<Unit>(NonCancellable) {
expect(2)
throw TrickyException()
}
try {
expect(1)
deferred.await()
} catch (e: TrickyException) {
assertNull(e.cause)
finish(3)
}
}
private suspend fun outerScopedMethod(deferred: Deferred<*>, vararg traces: String) = coroutineScope {
supervisorScope {
innerMethod(deferred, *traces)
assertTrue(true)
}
assertTrue(true)
}
@Test
fun testSelfSuppression() = runTest {
try {
runBlocking {
val job = launch {
coroutineScope<Unit> {
throw RecoverableTestException()
}
}
job.join()
expectUnreached()
}
expectUnreached()
} catch (e: RecoverableTestException) {
checkCycles(e)
}
}
private suspend fun throws() {
yield() // TCE
throw RecoverableTestException()
}
private suspend fun awaiter() {
val task = GlobalScope.async(Dispatchers.Default, start = CoroutineStart.LAZY) { throws() }
task.await()
yield() // TCE
}
@Test
fun testNonDispatchedRecovery() {
val await = suspend { awaiter() }
val barrier = CyclicBarrier(2)
var exception: Throwable? = null
thread {
await.startCoroutineUnintercepted(Continuation(EmptyCoroutineContext) {
exception = it.exceptionOrNull()
barrier.await()
})
}
barrier.await()
val e = exception
assertNotNull(e)
verifyStackTrace(e, "kotlinx.coroutines.RecoverableTestException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.throws(StackTraceRecoveryTest.kt:280)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$throws\$1.invokeSuspend(StackTraceRecoveryTest.kt)\n" +
"\t(Coroutine boundary)\n" +
"\tat kotlinx.coroutines.DeferredCoroutine.await\$suspendImpl(Builders.common.kt:99)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.awaiter(StackTraceRecoveryTest.kt:285)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testNonDispatchedRecovery\$await\$1.invokeSuspend(StackTraceRecoveryTest.kt:291)\n" +
"Caused by: kotlinx.coroutines.RecoverableTestException")
}
private class Callback(val cont: CancellableContinuation<*>)
@Test
fun testCancellableContinuation() = runTest {
val channel = Channel<Callback>(1)
launch {
try {
awaitCallback(channel)
} catch (e: Throwable) {
verifyStackTrace(e, "kotlinx.coroutines.RecoverableTestException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testCancellableContinuation\$1.invokeSuspend(StackTraceRecoveryTest.kt:329)\n" +
"\t(Coroutine boundary)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest.awaitCallback(StackTraceRecoveryTest.kt:348)\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testCancellableContinuation\$1\$1.invokeSuspend(StackTraceRecoveryTest.kt:322)\n" +
"Caused by: kotlinx.coroutines.RecoverableTestException\n" +
"\tat kotlinx.coroutines.exceptions.StackTraceRecoveryTest\$testCancellableContinuation\$1.invokeSuspend(StackTraceRecoveryTest.kt:329)")
}
}
val callback = channel.receive()
callback.cont.resumeWithException(RecoverableTestException())
}
private suspend fun awaitCallback(channel: Channel<Callback>) {
suspendCancellableCoroutine<Unit> { cont ->
channel.offer(Callback(cont))
}
yield() // nop to make sure it is not a tail call
}
@Test
fun testWrongMessageException() = runTest {
val result = runCatching {
coroutineScope<Unit> {
throw WrongMessageException("OK")
}
}
val ex = result.exceptionOrNull() ?: error("Expected to fail")
assertTrue(ex is WrongMessageException)
assertEquals("Token OK", ex.message)
}
public class WrongMessageException(token: String) : RuntimeException("Token $token")
}
|
