commonTest.com.zegreatrob.testmints.action.async.SuspendActionTest.kt Maven / Gradle / Ivy
package com.zegreatrob.testmints.action.async
import com.zegreatrob.minassert.assertIsEqualTo
import com.zegreatrob.minspy.SpyData
import com.zegreatrob.minspy.spyFunction
import com.zegreatrob.testmints.action.Action
import com.zegreatrob.testmints.action.ExecutableActionExecuteSyntax
import com.zegreatrob.testmints.action.SimpleExecutableAction
import com.zegreatrob.testmints.async.asyncSetup
import kotlinx.coroutines.coroutineScope
import kotlin.test.Test
class SuspendActionTest : SuspendActionExecuteSyntax {
data class MultiplyAction(val left: Int, val right: Int) : SimpleSuspendAction {
override val performFunc = link(MultiplyActionDispatcher::invoke)
}
interface MultiplyActionDispatcher {
suspend fun invoke(action: MultiplyAction) = coroutineScope {
(1..action.left)
.fold(0) { current, _ -> current + action.right }
}
}
@Test
fun usingTheActionWithTheDispatcherDoesTheWorkOfTheDispatchFunction() = asyncSetup(object {
val action = MultiplyAction(2, 3)
val dispatcher = object : MultiplyActionDispatcher {}
}) exercise {
dispatcher.execute(action)
} verify { result ->
result.assertIsEqualTo(6)
}
@Test
fun executingActionMerelyPassesActionToDispatcherWhereWorkCanBeDone() = asyncSetup(object {
val action = MultiplyAction(2, 3)
val expectedReturn = 42
val spy = SpyData().apply { spyWillReturn(expectedReturn) }
val spyDispatcher = object : MultiplyActionDispatcher {
override suspend fun invoke(action: MultiplyAction) = spy.spyFunction(action)
}
}) exercise {
spyDispatcher.execute(action)
} verify { result ->
result.assertIsEqualTo(expectedReturn)
spy.spyReceivedValues.assertIsEqualTo(listOf(action))
}
class Dispatcher : SuspendActionExecuteSyntax, ExecutableActionExecuteSyntax {
data class AddAction(val left: Int, val right: Int) : SimpleSuspendAction {
override val performFunc = link(AddActionDispatcher::invoke)
}
interface AddActionDispatcher {
suspend operator fun invoke(addAction: AddAction) = with(addAction) { left + right }
}
@Test
fun singleDispatcherObjectCanExecuteManyActions() = asyncSetup(object {
val dispatcher = object : AddActionDispatcher, MultiplyActionDispatcher {}
val addAction = AddAction(7, 22)
val multiplyAction = MultiplyAction(13, 41)
}) exercise {
Pair(
dispatcher.execute(addAction),
dispatcher.execute(multiplyAction)
)
} verify { result ->
with(result) {
first.assertIsEqualTo(29)
second.assertIsEqualTo(533)
}
}
data class SubtractAction(val left: Int, val right: Int) :
SimpleExecutableAction {
override val performFunc = link(SubtractActionDispatcher::invoke)
}
interface SubtractActionDispatcher {
operator fun invoke(SubtractAction: SubtractAction) = with(SubtractAction) { left - right }
}
@Test
fun singleDispatcherObjectCanWorkWithBothExecuteAndSuspendActions() = asyncSetup(object {
val dispatcher = object : AddActionDispatcher, SubtractActionDispatcher {}
val addAction = AddAction(7, 22)
val subtractAction = SubtractAction(41, 13)
}) exercise {
Pair(
dispatcher.execute(addAction),
dispatcher.execute(subtractAction)
)
} verify { result ->
result.assertIsEqualTo(
29 to 28
)
}
@Test
fun usingSuspendActionSyntaxAllowsInterceptionOfAnyAction() = asyncSetup(object : SuspendActionExecuteSyntax {
val dispatcher = object : AddActionDispatcher, MultiplyActionDispatcher {}
val addAction = AddAction(7, 22)
val multiplyAction = MultiplyAction(13, 41)
val allExecutedActions = mutableListOf()
override suspend fun D.execute(action: SuspendAction) = action.execute(this)
.also { allExecutedActions.add(action) }
}) exercise {
Pair(
dispatcher.execute(addAction),
dispatcher.execute(multiplyAction)
)
} verify {
allExecutedActions.assertIsEqualTo(
listOf(addAction, multiplyAction)
)
}
}
}