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@file:Suppress("EXPERIMENTAL_FEATURE_WARNING")
package test
import com.nhaarman.expect.expect
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.delay
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withContext
import org.junit.Test
import org.mockito.kotlin.*
class CoroutinesTest {
@Test
fun stubbingSuspending() {
/* Given */
val m = mock<SomeInterface> {
onBlocking { suspending() } doReturn 42
}
/* When */
val result = runBlocking { m.suspending() }
/* Then */
expect(result).toBe(42)
}
@Test
fun stubbingSuspending_usingSuspendingFunction() {
/* Given */
val m = mock<SomeInterface> {
onBlocking { suspending() } doReturn runBlocking { SomeClass().result(42) }
}
/* When */
val result = runBlocking { m.suspending() }
/* Then */
expect(result).toBe(42)
}
@Test
fun stubbingSuspending_runBlocking() = runBlocking {
/* Given */
val m = mock<SomeInterface> {
onBlocking { suspending() } doReturn 42
}
/* When */
val result = m.suspending()
/* Then */
expect(result).toBe(42)
}
@Test
fun stubbingNonSuspending() {
/* Given */
val m = mock<SomeInterface> {
onBlocking { nonsuspending() } doReturn 42
}
/* When */
val result = m.nonsuspending()
/* Then */
expect(result).toBe(42)
}
@Test
fun stubbingNonSuspending_runBlocking() = runBlocking {
/* Given */
val m = mock<SomeInterface> {
onBlocking { nonsuspending() } doReturn 42
}
/* When */
val result = m.nonsuspending()
/* Then */
expect(result).toBe(42)
}
@Test
fun delayingResult() {
/* Given */
val m = SomeClass()
/* When */
val result = runBlocking { m.delaying() }
/* Then */
expect(result).toBe(42)
}
@Test
fun delayingResult_runBlocking() = runBlocking {
/* Given */
val m = SomeClass()
/* When */
val result = m.delaying()
/* Then */
expect(result).toBe(42)
}
@Test
fun verifySuspendFunctionCalled() {
/* Given */
val m = mock<SomeInterface>()
/* When */
runBlocking { m.suspending() }
/* Then */
runBlocking { verify(m).suspending() }
}
@Test
fun verifySuspendFunctionCalled_runBlocking() = runBlocking<Unit> {
val m = mock<SomeInterface>()
m.suspending()
verify(m).suspending()
}
@Test
fun verifySuspendFunctionCalled_verifyBlocking() {
val m = mock<SomeInterface>()
runBlocking { m.suspending() }
verifyBlocking(m) { suspending() }
}
@Test
fun verifyAtLeastOnceSuspendFunctionCalled_verifyBlocking() {
val m = mock<SomeInterface>()
runBlocking { m.suspending() }
runBlocking { m.suspending() }
verifyBlocking(m, atLeastOnce()) { suspending() }
}
@Test
fun verifySuspendMethod() = runBlocking {
val testSubject: SomeInterface = mock()
testSubject.suspending()
inOrder(testSubject) {
verify(testSubject).suspending()
}
}
}
interface SomeInterface {
suspend fun suspending(): Int
fun nonsuspending(): Int
}
class SomeClass {
suspend fun result(r: Int) = withContext(Dispatchers.Default) { r }
suspend fun delaying() = withContext(Dispatchers.Default) {
delay(100)
42
}
}
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