package kotlinx.coroutines.experimental.channels

import com.devexperts.dxlab.lincheck.*
import com.devexperts.dxlab.lincheck.annotations.*
import com.devexperts.dxlab.lincheck.paramgen.*
import com.devexperts.dxlab.lincheck.stress.*
import kotlinx.coroutines.experimental.*
import org.junit.*

@Param(name = "value", gen = IntGen::class, conf = "1:3")
class ConflatedChannelLinearizabilityTest : TestBase() {

    private val lt = LinTesting()
    private lateinit var channel: ConflatedBroadcastChannel<Int>

    @Reset
    fun reset() {
        channel = ConflatedBroadcastChannel()
    }

    @Operation(runOnce = true)
    fun send1(@Param(name = "value") value: Int) = lt.run("send1") { channel.send(value) }

    @Operation(runOnce = true)
    fun send2(@Param(name = "value") value: Int) = lt.run("send2") { channel.send(value) }

    @Operation(runOnce = true)
    fun send3(@Param(name = "value") value: Int) = lt.run("send3") { channel.send(value) }

    @Operation(runOnce = true)
    fun receive1() = lt.run("receive1") { channel.openSubscription().receive() }

    @Operation(runOnce = true)
    fun receive2() = lt.run("receive2") { channel.openSubscription().receive() }

    @Operation(runOnce = true)
    fun receive3() = lt.run("receive3") { channel.openSubscription().receive() }

    @Test
    fun testConflatedChannelLinearizability() {
        val options = StressOptions()
                .iterations(100)
                .invocationsPerIteration(1000 * stressTestMultiplier)
                .addThread(1, 3)
                .addThread(1, 3)
                .addThread(1, 3)
                .verifier(LinVerifier::class.java)
        LinChecker.check(ConflatedChannelLinearizabilityTest::class.java, options)
    }
}