RegionUrlProviderTest.kt
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/*
* Copyright 2024 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
import io.livekit.android.test.BaseTest
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.serialization.json.Json
import okhttp3.OkHttpClient
import okhttp3.mockwebserver.MockResponse
import okhttp3.mockwebserver.MockWebServer
import org.junit.After
import org.junit.Assert.assertEquals
import org.junit.Assert.assertNotNull
import org.junit.Assert.assertNull
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith
import org.robolectric.RobolectricTestRunner
@OptIn(ExperimentalCoroutinesApi::class)
@RunWith(RobolectricTestRunner::class)
class RegionUrlProviderTest : BaseTest() {
lateinit var server: MockWebServer
@Before
fun setup() {
setRegionUrlProviderTesting(true)
}
@After
fun tearDown() {
setRegionUrlProviderTesting(false)
}
@Test
fun fetchRegionSettings() = runTest {
server = MockWebServer()
server.enqueue(MockResponse().setBody(regionResponse))
val regionUrlProvider = RegionUrlProvider(server.url("").toUri(), "token", OkHttpClient.Builder().build(), Json { ignoreUnknownKeys = true })
val settings = regionUrlProvider.fetchRegionSettings()
assertNotNull(settings)
val regions = settings!!.regions
assertNotNull(regions)
assertEquals(3, regions.size)
val regionA = regions[0]
assertEquals("a", regionA.region)
assertEquals("https://regiona.livekit.cloud", regionA.url)
assertEquals(100L, regionA.distance)
}
@Test
fun getNextRegionUrl() = runTest {
server = MockWebServer()
server.enqueue(MockResponse().setBody(regionResponse))
val regionUrlProvider = RegionUrlProvider(server.url("").toUri(), "token", OkHttpClient.Builder().build(), Json { ignoreUnknownKeys = true })
assertEquals("https://regiona.livekit.cloud", regionUrlProvider.getNextBestRegionUrl())
assertEquals("https://regionb.livekit.cloud", regionUrlProvider.getNextBestRegionUrl())
assertEquals("https://regionc.livekit.cloud", regionUrlProvider.getNextBestRegionUrl())
assertNull(regionUrlProvider.getNextBestRegionUrl())
// Check that only one request was needed.
assertEquals(1, server.requestCount)
}
}
private val regionResponse = """{
"regions": [
{
"region": "a",
"url": "https://regiona.livekit.cloud",
"distance": "100"
},
{
"region": "b",
"url": "https://regionb.livekit.cloud",
"distance": "1000"
},
{
"region": "c",
"url": "https://regionc.livekit.cloud",
"distance": "10000"
}
]
}"""