kotlin-fork/kotlin-native/runtime/test/native/concurrent/MutableDataTest.kt

/*
 * Copyright 2010-2024 JetBrains s.r.o. and Kotlin Programming Language contributors.
 * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
 */

package test.native.concurrent

import kotlin.native.concurrent.*
import kotlin.test.*

@OptIn(FreezingIsDeprecated::class)
private fun assertContentsEquals(expected: ByteArray, actual: MutableData) {
    assertEquals(expected.size, actual.size)

    expected.forEachIndexed { index, byte ->
        assertEquals(byte, actual.get(index))
    }
}

@OptIn(FreezingIsDeprecated::class)
class MutableDataTest {
    // See https://youtrack.jetbrains.com/issue/KT-39145
    @Test
    fun kt39145_1() = withWorker {
        execute(TransferMode.SAFE, { "test" }) {
            val data = MutableData(1_000)
            val bytes = byteArrayOf(0, 10, 20, 30)
            data.append(bytes, 0, 4)
            assertEquals(4, data.size)

            assertContentsEquals(bytes, data)
        }.result
    }

    @Test
    fun kt39145_2() = withWorker {
        val externalData = MutableData(1_000)
        execute(TransferMode.SAFE, { externalData }) {
            val bytes = byteArrayOf(0, 10, 20, 30)
            it.append(bytes, 0, 4)
            assertEquals(4, it.size)

            assertContentsEquals(bytes, it)
        }.result
    }

    @Test
    fun kt39145_3() {
        val mainThreadData = MutableData(1_000)
        val bytes = byteArrayOf(0, 10, 20, 30)
        mainThreadData.append(bytes, 0, 4)
        assertEquals(4, mainThreadData.size)

        assertContentsEquals(bytes, mainThreadData)
    }
}