Jolanda Verhoef
3 years ago
parent
53248e6dac
commit
1b06dc97ea
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/*
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* Copyright 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.samples.apps.nowinandroid
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import android.app.Application
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import android.content.Context
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import androidx.test.runner.AndroidJUnitRunner
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import dagger.hilt.android.testing.HiltTestApplication
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/**
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* A custom runner to set up the instrumented application class for tests.
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*/
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class NiaTestRunner : AndroidJUnitRunner() {
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override fun newApplication(cl: ClassLoader?, name: String?, context: Context?): Application {
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return super.newApplication(cl, HiltTestApplication::class.java.name, context)
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}
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}
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@ -0,0 +1,81 @@
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/*
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* Copyright 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.samples.apps.nowinandroid.di
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import androidx.datastore.core.DataStore
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import androidx.datastore.core.DataStoreFactory
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import com.google.samples.apps.nowinandroid.data.UserPreferences
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import com.google.samples.apps.nowinandroid.data.UserPreferencesSerializer
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import com.google.samples.apps.nowinandroid.data.fake.FakeNewsRepository
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import com.google.samples.apps.nowinandroid.data.fake.FakeTopicsRepository
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import com.google.samples.apps.nowinandroid.data.repository.NewsRepository
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import com.google.samples.apps.nowinandroid.data.repository.TopicsRepository
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import dagger.Binds
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import dagger.Module
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import dagger.Provides
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import dagger.hilt.components.SingletonComponent
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import dagger.hilt.testing.TestInstallIn
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import javax.inject.Singleton
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import kotlinx.serialization.json.Json
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import org.junit.rules.TemporaryFolder
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/**
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* The [TestAppModule] replaces [AppModule] during instrumentation tests. It creates test doubles
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* where necessary. It also includes logic to prevent multiple data stores with the same file name
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* from being created during one test execution context.
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*/
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@Module
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@TestInstallIn(
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components = [SingletonComponent::class],
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replaces = [AppModule::class]
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)
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interface TestAppModule {
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// Use a fake repository as a test double, so we don't have a network dependency.
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@Binds
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fun bindsTopicRepository(fakeTopicsRepository: FakeTopicsRepository): TopicsRepository
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// Use a fake repository as a test double, so we don't have a network dependency.
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@Binds
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fun bindsNewsResourceRepository(fakeNewsRepository: FakeNewsRepository): NewsRepository
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// Use the default dispatchers. For the high-level UI tests, we don't want to override these.
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@Binds
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fun bindsNiaDispatchers(defaultNiaDispatchers: DefaultNiaDispatchers): NiaDispatchers
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companion object {
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@Provides
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@Singleton
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fun providesUserPreferencesDataStore(
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userPreferencesSerializer: UserPreferencesSerializer,
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tmpFolder: TemporaryFolder
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): DataStore<UserPreferences> {
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return DataStoreFactory.create(
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serializer = userPreferencesSerializer,
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) {
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tmpFolder.newFile("user_preferences_test.pb")
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}
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}
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@Provides
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@Singleton
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fun providesNetworkJson(): Json = Json {
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ignoreUnknownKeys = true
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}
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}
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}
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