StreamReaderTest.kt
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/*
* Copyright 2025 LiveKit, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.livekit.android.room.datastream
import io.livekit.android.room.datastream.incoming.ByteStreamReceiver
import io.livekit.android.room.datastream.incoming.IncomingDataStreamManagerImpl
import io.livekit.android.test.BaseTest
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.runBlocking
import org.junit.Assert.assertEquals
import org.junit.Assert.assertTrue
import org.junit.Before
import org.junit.Test
@OptIn(ExperimentalCoroutinesApi::class)
class StreamReaderTest : BaseTest() {
lateinit var channel: Channel<ByteArray>
lateinit var reader: ByteStreamReceiver
@Before
fun setup() {
channel = IncomingDataStreamManagerImpl.createChannelForStreamReceiver()
channel.trySend(ByteArray(1) { 0 })
channel.trySend(ByteArray(1) { 1 })
channel.trySend(ByteArray(1) { 2 })
channel.close()
val streamInfo = ByteStreamInfo(id = "id", topic = "topic", timestampMs = 3, totalSize = null, attributes = mapOf(), mimeType = "mime", name = null)
reader = ByteStreamReceiver(streamInfo, channel)
}
@Test
fun buffersDataUntilSubscribed() = runTest {
var count = 0
runBlocking {
reader.flow.collect {
assertEquals(count, it[0].toInt())
count++
}
}
assertEquals(3, count)
}
@Test
fun readEach() = runTest {
runBlocking {
for (i in 0..2) {
val next = reader.readNext()
assertEquals(i, next[0].toInt())
}
}
}
@Test
fun readAll() = runTest {
runBlocking {
val data = reader.readAll()
assertEquals(3, data.size)
for (i in 0..2) {
assertEquals(i, data[i][0].toInt())
}
}
}
@Test
fun overreadThrows() = runTest {
var threwOnce = false
runBlocking {
try {
for (i in 0..3) {
val next = reader.readNext()
assertEquals(i, next[0].toInt())
}
} catch (e: NoSuchElementException) {
threwOnce = true
}
}
assertTrue(threwOnce)
}
}