536 lines
17 KiB
Kotlin
536 lines
17 KiB
Kotlin
package com.keylesspalace.tusky.components.timeline
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import android.os.Looper.getMainLooper
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import androidx.paging.ExperimentalPagingApi
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import androidx.paging.LoadType
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import androidx.paging.PagingConfig
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import androidx.paging.PagingSource
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import androidx.paging.PagingState
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import androidx.paging.RemoteMediator
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import androidx.room.Room
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import androidx.test.ext.junit.runners.AndroidJUnit4
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import androidx.test.platform.app.InstrumentationRegistry
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import com.google.gson.Gson
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import com.keylesspalace.tusky.components.timeline.viewmodel.CachedTimelineRemoteMediator
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import com.keylesspalace.tusky.db.AccountEntity
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import com.keylesspalace.tusky.db.AccountManager
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import com.keylesspalace.tusky.db.AppDatabase
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import com.keylesspalace.tusky.db.Converters
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import com.keylesspalace.tusky.db.TimelineStatusWithAccount
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import com.nhaarman.mockitokotlin2.anyOrNull
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import com.nhaarman.mockitokotlin2.doReturn
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import com.nhaarman.mockitokotlin2.mock
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import io.reactivex.rxjava3.core.Single
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import kotlinx.coroutines.ExperimentalCoroutinesApi
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import kotlinx.coroutines.runBlocking
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import okhttp3.ResponseBody.Companion.toResponseBody
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import org.junit.After
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import org.junit.Assert.assertEquals
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import org.junit.Assert.assertFalse
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import org.junit.Assert.assertTrue
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import org.junit.Before
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import org.junit.Test
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import org.junit.runner.RunWith
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import org.robolectric.Shadows.shadowOf
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import org.robolectric.annotation.Config
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import retrofit2.HttpException
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import retrofit2.Response
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import java.io.IOException
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@Config(sdk = [28])
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@RunWith(AndroidJUnit4::class)
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class CachedTimelineRemoteMediatorTest {
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private val accountManager: AccountManager = mock {
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on { activeAccount } doReturn AccountEntity(
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id = 1,
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domain = "mastodon.example",
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accessToken = "token",
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isActive = true
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)
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}
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private lateinit var db: AppDatabase
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@Before
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@ExperimentalCoroutinesApi
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fun setup() {
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shadowOf(getMainLooper()).idle()
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val context = InstrumentationRegistry.getInstrumentation().targetContext
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db = Room.inMemoryDatabaseBuilder(context, AppDatabase::class.java)
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.addTypeConverter(Converters(Gson()))
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.build()
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}
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@After
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@ExperimentalCoroutinesApi
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fun tearDown() {
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db.close()
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}
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@Test
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@ExperimentalPagingApi
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fun `should return error when network call returns error code`() {
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val remoteMediator = CachedTimelineRemoteMediator(
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accountManager = accountManager,
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api = mock {
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on { homeTimeline(anyOrNull(), anyOrNull(), anyOrNull()) } doReturn Single.just(Response.error(500, "".toResponseBody()))
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},
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db = db,
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gson = Gson()
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)
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val result = runBlocking { remoteMediator.load(LoadType.REFRESH, state()) }
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assertTrue(result is RemoteMediator.MediatorResult.Error)
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assertTrue((result as RemoteMediator.MediatorResult.Error).throwable is HttpException)
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assertEquals(500, (result.throwable as HttpException).code())
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}
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@Test
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@ExperimentalPagingApi
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fun `should return error when network call fails`() {
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val remoteMediator = CachedTimelineRemoteMediator(
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accountManager = accountManager,
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api = mock {
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on { homeTimeline(anyOrNull(), anyOrNull(), anyOrNull()) } doReturn Single.error(IOException())
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},
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db = db,
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gson = Gson()
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)
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val result = runBlocking { remoteMediator.load(LoadType.REFRESH, state()) }
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assertTrue(result is RemoteMediator.MediatorResult.Error)
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assertTrue((result as RemoteMediator.MediatorResult.Error).throwable is IOException)
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}
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@Test
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@ExperimentalPagingApi
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fun `should not prepend statuses`() {
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val remoteMediator = CachedTimelineRemoteMediator(
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accountManager = accountManager,
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api = mock(),
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db = db,
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gson = Gson()
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)
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val state = state(
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listOf(
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PagingSource.LoadResult.Page(
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data = listOf(
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mockStatusEntityWithAccount("3")
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),
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prevKey = null,
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nextKey = 1
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)
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)
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)
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val result = runBlocking { remoteMediator.load(LoadType.PREPEND, state) }
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assertTrue(result is RemoteMediator.MediatorResult.Success)
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assertTrue((result as RemoteMediator.MediatorResult.Success).endOfPaginationReached)
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}
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@Test
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@ExperimentalPagingApi
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fun `should refresh and insert placeholder`() {
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val statusesAlreadyInDb = listOf(
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mockStatusEntityWithAccount("3"),
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mockStatusEntityWithAccount("2"),
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mockStatusEntityWithAccount("1"),
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)
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db.insert(statusesAlreadyInDb)
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val remoteMediator = CachedTimelineRemoteMediator(
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accountManager = accountManager,
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api = mock {
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on { homeTimeline(limit = 20) } doReturn Single.just(
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Response.success(
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listOf(
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mockStatus("8"),
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mockStatus("7"),
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mockStatus("5")
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)
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)
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)
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on { homeTimeline(maxId = "3", limit = 20) } doReturn Single.just(
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Response.success(
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listOf(
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mockStatus("3"),
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mockStatus("2"),
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mockStatus("1")
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)
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)
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)
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},
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db = db,
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gson = Gson()
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)
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val state = state(
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listOf(
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PagingSource.LoadResult.Page(
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data = statusesAlreadyInDb,
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prevKey = null,
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nextKey = 0
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)
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)
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)
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val result = runBlocking { remoteMediator.load(LoadType.REFRESH, state) }
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assertTrue(result is RemoteMediator.MediatorResult.Success)
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assertEquals(false, (result as RemoteMediator.MediatorResult.Success).endOfPaginationReached)
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db.assertStatuses(
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listOf(
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mockStatusEntityWithAccount("8"),
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mockStatusEntityWithAccount("7"),
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mockStatusEntityWithAccount("5"),
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TimelineStatusWithAccount().apply {
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status = Placeholder("4", loading = false).toEntity(1)
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},
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mockStatusEntityWithAccount("3"),
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mockStatusEntityWithAccount("2"),
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mockStatusEntityWithAccount("1"),
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)
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)
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}
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@Test
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@ExperimentalPagingApi
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fun `should refresh and not insert placeholders`() {
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val statusesAlreadyInDb = listOf(
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mockStatusEntityWithAccount("3"),
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mockStatusEntityWithAccount("2"),
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mockStatusEntityWithAccount("1"),
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)
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db.insert(statusesAlreadyInDb)
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val remoteMediator = CachedTimelineRemoteMediator(
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accountManager = accountManager,
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api = mock {
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on { homeTimeline(limit = 20) } doReturn Single.just(
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Response.success(
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listOf(
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mockStatus("6"),
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mockStatus("4"),
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mockStatus("3")
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)
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)
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)
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on { homeTimeline(maxId = "3", limit = 20) } doReturn Single.just(
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Response.success(
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listOf(
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mockStatus("3"),
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mockStatus("2"),
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mockStatus("1")
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)
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)
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)
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},
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db = db,
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gson = Gson()
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)
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val state = state(
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listOf(
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PagingSource.LoadResult.Page(
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data = statusesAlreadyInDb,
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prevKey = null,
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nextKey = 0
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)
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)
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)
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val result = runBlocking { remoteMediator.load(LoadType.REFRESH, state) }
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assertTrue(result is RemoteMediator.MediatorResult.Success)
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assertEquals(false, (result as RemoteMediator.MediatorResult.Success).endOfPaginationReached)
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db.assertStatuses(
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listOf(
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mockStatusEntityWithAccount("6"),
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mockStatusEntityWithAccount("4"),
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mockStatusEntityWithAccount("3"),
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mockStatusEntityWithAccount("2"),
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mockStatusEntityWithAccount("1"),
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)
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)
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}
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@Test
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@ExperimentalPagingApi
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fun `should not try to refresh already cached statuses when db is empty`() {
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val remoteMediator = CachedTimelineRemoteMediator(
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accountManager = accountManager,
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api = mock {
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on { homeTimeline(limit = 20) } doReturn Single.just(
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Response.success(
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listOf(
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mockStatus("5"),
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mockStatus("4"),
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mockStatus("3")
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)
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)
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)
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},
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db = db,
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gson = Gson()
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)
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val state = state(
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listOf(
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PagingSource.LoadResult.Page(
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data = emptyList(),
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prevKey = null,
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nextKey = 0
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)
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)
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)
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val result = runBlocking { remoteMediator.load(LoadType.REFRESH, state) }
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assertTrue(result is RemoteMediator.MediatorResult.Success)
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assertEquals(false, (result as RemoteMediator.MediatorResult.Success).endOfPaginationReached)
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db.assertStatuses(
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listOf(
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mockStatusEntityWithAccount("5"),
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mockStatusEntityWithAccount("4"),
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mockStatusEntityWithAccount("3")
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)
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)
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}
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@Test
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@ExperimentalPagingApi
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fun `should remove deleted status from db and keep state of other cached statuses`() {
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val statusesAlreadyInDb = listOf(
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mockStatusEntityWithAccount("3", expanded = true),
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mockStatusEntityWithAccount("2"),
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mockStatusEntityWithAccount("1", expanded = false),
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)
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db.insert(statusesAlreadyInDb)
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val remoteMediator = CachedTimelineRemoteMediator(
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accountManager = accountManager,
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api = mock {
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on { homeTimeline(limit = 20) } doReturn Single.just(
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Response.success(emptyList())
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)
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on { homeTimeline(maxId = "3", limit = 20) } doReturn Single.just(
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Response.success(
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listOf(
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mockStatus("3"),
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mockStatus("1")
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)
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)
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)
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},
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db = db,
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gson = Gson()
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)
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val state = state(
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listOf(
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PagingSource.LoadResult.Page(
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data = statusesAlreadyInDb,
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prevKey = null,
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nextKey = 0
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)
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)
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)
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val result = runBlocking { remoteMediator.load(LoadType.REFRESH, state) }
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assertTrue(result is RemoteMediator.MediatorResult.Success)
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assertTrue((result as RemoteMediator.MediatorResult.Success).endOfPaginationReached)
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db.assertStatuses(
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listOf(
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mockStatusEntityWithAccount("3", expanded = true),
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mockStatusEntityWithAccount("1", expanded = false)
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)
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)
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}
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@Test
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@ExperimentalPagingApi
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fun `should not remove placeholder in timeline`() {
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val statusesAlreadyInDb = listOf(
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mockStatusEntityWithAccount("8"),
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mockStatusEntityWithAccount("7"),
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mockPlaceholderEntityWithAccount("6"),
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mockStatusEntityWithAccount("1"),
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)
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db.insert(statusesAlreadyInDb)
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val remoteMediator = CachedTimelineRemoteMediator(
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accountManager = accountManager,
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api = mock {
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on { homeTimeline(sinceId = "6", limit = 20) } doReturn Single.just(
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Response.success(
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listOf(
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mockStatus("9"),
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mockStatus("8"),
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mockStatus("7")
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)
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)
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)
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on { homeTimeline(maxId = "8", sinceId = "6", limit = 20) } doReturn Single.just(
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Response.success(
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listOf(
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mockStatus("8"),
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mockStatus("7")
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)
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)
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)
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},
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db = db,
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gson = Gson()
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)
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val state = state(
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listOf(
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PagingSource.LoadResult.Page(
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data = statusesAlreadyInDb,
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prevKey = null,
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nextKey = 0
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)
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)
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)
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val result = runBlocking { remoteMediator.load(LoadType.REFRESH, state) }
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assertTrue(result is RemoteMediator.MediatorResult.Success)
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assertFalse((result as RemoteMediator.MediatorResult.Success).endOfPaginationReached)
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db.assertStatuses(
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listOf(
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mockStatusEntityWithAccount("9"),
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mockStatusEntityWithAccount("8"),
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mockStatusEntityWithAccount("7"),
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mockPlaceholderEntityWithAccount("6"),
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mockStatusEntityWithAccount("1"),
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)
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)
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}
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@Test
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@ExperimentalPagingApi
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fun `should append statuses`() {
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val statusesAlreadyInDb = listOf(
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mockStatusEntityWithAccount("8"),
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mockStatusEntityWithAccount("7"),
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mockStatusEntityWithAccount("5"),
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)
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db.insert(statusesAlreadyInDb)
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val remoteMediator = CachedTimelineRemoteMediator(
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accountManager = accountManager,
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api = mock {
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on { homeTimeline(maxId = "5", limit = 20) } doReturn Single.just(
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Response.success(
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listOf(
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mockStatus("3"),
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mockStatus("2"),
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mockStatus("1")
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)
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)
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)
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},
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db = db,
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gson = Gson()
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)
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val state = state(
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listOf(
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PagingSource.LoadResult.Page(
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data = statusesAlreadyInDb,
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prevKey = null,
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nextKey = 0
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)
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)
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)
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val result = runBlocking { remoteMediator.load(LoadType.APPEND, state) }
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assertTrue(result is RemoteMediator.MediatorResult.Success)
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assertEquals(false, (result as RemoteMediator.MediatorResult.Success).endOfPaginationReached)
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db.assertStatuses(
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listOf(
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mockStatusEntityWithAccount("8"),
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mockStatusEntityWithAccount("7"),
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mockStatusEntityWithAccount("5"),
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mockStatusEntityWithAccount("3"),
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mockStatusEntityWithAccount("2"),
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mockStatusEntityWithAccount("1"),
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)
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)
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}
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private fun state(pages: List<PagingSource.LoadResult.Page<Int, TimelineStatusWithAccount>> = emptyList()) = PagingState(
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pages = pages,
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anchorPosition = null,
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config = PagingConfig(
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pageSize = 20
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),
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leadingPlaceholderCount = 0
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)
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private fun AppDatabase.insert(statuses: List<TimelineStatusWithAccount>) {
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runBlocking {
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statuses.forEach { statusWithAccount ->
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if (statusWithAccount.status.authorServerId != null) {
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timelineDao().insertAccount(statusWithAccount.account)
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}
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statusWithAccount.reblogAccount?.let { account ->
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timelineDao().insertAccount(account)
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}
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timelineDao().insertStatus(statusWithAccount.status)
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}
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}
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}
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private fun AppDatabase.assertStatuses(
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expected: List<TimelineStatusWithAccount>,
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forAccount: Long = 1
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) {
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val pagingSource = timelineDao().getStatuses(forAccount)
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val loadResult = runBlocking {
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pagingSource.load(PagingSource.LoadParams.Refresh(null, 100, false))
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}
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val loadedStatuses = (loadResult as PagingSource.LoadResult.Page).data
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assertEquals(expected.size, loadedStatuses.size)
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for ((exp, prov) in expected.zip(loadedStatuses)) {
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assertEquals(exp.status, prov.status)
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if (exp.status.authorServerId != null) { // only check if no placeholder
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assertEquals(exp.account, prov.account)
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assertEquals(exp.reblogAccount, prov.reblogAccount)
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}
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}
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}
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}
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