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app/src/androidTest/java/com/karumi/jetpack/superheroes/worker/ThanosWorkerTest.kt
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| package com.karumi.jetpack.superheroes.worker | ||
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| import androidx.room.Room | ||
| import androidx.test.core.app.ApplicationProvider | ||
| import androidx.test.platform.app.InstrumentationRegistry.getInstrumentation | ||
| import androidx.work.OneTimeWorkRequest | ||
| import androidx.work.WorkManager | ||
| import androidx.work.testing.WorkManagerTestInitHelper | ||
| import com.karumi.jetpack.superheroes.SuperHeroesApplication | ||
| import com.karumi.jetpack.superheroes.common.SuperHeroesDatabase | ||
| import com.karumi.jetpack.superheroes.data.repository.room.SuperHeroEntity | ||
| import com.karumi.jetpack.superheroes.domain.model.SuperHero | ||
| import org.junit.Assert.assertEquals | ||
| import org.junit.Before | ||
| import org.junit.Test | ||
| import org.kodein.di.Kodein | ||
| import org.kodein.di.erased.bind | ||
| import org.kodein.di.erased.instance | ||
| import java.util.concurrent.Executor | ||
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| class ThanosWorkerTest { | ||
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| private lateinit var database: SuperHeroesDatabase | ||
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| @Before | ||
| fun setUp() { | ||
| val app = ApplicationProvider.getApplicationContext<SuperHeroesApplication>() | ||
| WorkManagerTestInitHelper.initializeTestWorkManager(app) | ||
| database = Room.inMemoryDatabaseBuilder(app, SuperHeroesDatabase::class.java) | ||
| .allowMainThreadQueries() | ||
| .build() | ||
| app.override(Kodein.Module("Test dependencies", allowSilentOverride = true) { | ||
| bind<SuperHeroesDatabase>() with instance(database) | ||
| bind<Executor>() with instance(Executor { | ||
| getInstrumentation().runOnMainSync { it.run() } | ||
| }) | ||
| }) | ||
| database.superHeroesDao().deleteAll() | ||
| } | ||
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| @Test | ||
| fun thanosWorkerDoNotDeleteAnyoneIfSuperHeroesAreLessThanTwo() { | ||
| val superHeroes = insertSuperHeroes(1) | ||
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| enqueueWorker() | ||
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| assertEquals(superHeroes, getInsertedSuperHeroes()) | ||
| } | ||
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| @Test | ||
| fun thanosWorkerDeletesHalfTheSuperHeroesWhenThereAreMoreThanTwo() { | ||
| insertSuperHeroes(10) | ||
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| enqueueWorker() | ||
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| assertEquals(5, getInsertedSuperHeroes().size) | ||
| } | ||
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| @Test | ||
| fun thanosWorkerDeletesHalfTheSuperHeroesRoundingDownWhenThereIsAnOddNumberOfSuperHeroes() { | ||
| insertSuperHeroes(11) | ||
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| enqueueWorker() | ||
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| assertEquals(6, getInsertedSuperHeroes().size) | ||
| } | ||
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| private fun enqueueWorker() = getInstrumentation().runOnMainSync { | ||
| val work = OneTimeWorkRequest.Builder(ThanosWorker::class.java).build() | ||
| WorkManager.getInstance().enqueue(work) | ||
| } | ||
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| private fun insertSuperHeroes(numberOfSuperHeroes: Int): List<SuperHero> { | ||
| val superHeroes = (1..numberOfSuperHeroes) | ||
| .map { SuperHero("#$it", "SH $it", null, false, "") } | ||
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| database.superHeroesDao().insertAll(superHeroes.map { SuperHeroEntity(it) }) | ||
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| return superHeroes | ||
| } | ||
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| private fun getInsertedSuperHeroes(): List<SuperHero> = | ||
| database.superHeroesDao().getAllSuperHeroes().map { it.superHero } | ||
| } |
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23 changes: 23 additions & 0 deletions
23
app/src/main/java/com/karumi/jetpack/superheroes/worker/ThanosWorker.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,23 @@ | ||
| package com.karumi.jetpack.superheroes.worker | ||
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| import android.content.Context | ||
| import androidx.work.Worker | ||
| import androidx.work.WorkerParameters | ||
| import com.karumi.jetpack.superheroes.data.repository.LocalSuperHeroDataSource | ||
| import org.kodein.di.KodeinAware | ||
| import org.kodein.di.android.closestKodein | ||
| import org.kodein.di.erased.instance | ||
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| class ThanosWorker( | ||
| context: Context, | ||
| params: WorkerParameters | ||
| ) : Worker(context, params), KodeinAware { | ||
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| override val kodein by closestKodein(context) | ||
| private val localSuperHeroesDataSource: LocalSuperHeroDataSource by instance() | ||
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| override fun doWork(): Result { | ||
| localSuperHeroesDataSource.deleteRandomHalf() | ||
| return Result.success() | ||
| } | ||
| } |