84 lines
3.2 KiB
Java
84 lines
3.2 KiB
Java
/*
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* Copyright (C) 2020 The Dagger Authors.
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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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* http://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 dagger.hilt.android;
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import static androidx.test.core.app.ApplicationProvider.getApplicationContext;
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import static com.google.common.truth.Truth.assertThat;
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import androidx.lifecycle.ViewModel;
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import androidx.lifecycle.ViewModelProvider;
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import android.content.Intent;
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import android.os.Build;
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import androidx.fragment.app.FragmentActivity;
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import androidx.test.core.app.ActivityScenario;
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import androidx.test.ext.junit.runners.AndroidJUnit4;
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import dagger.Module;
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import dagger.Provides;
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import dagger.hilt.InstallIn;
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import dagger.hilt.android.components.ActivityComponent;
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import dagger.hilt.android.testing.HiltAndroidRule;
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import dagger.hilt.android.testing.HiltAndroidTest;
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import dagger.hilt.android.testing.HiltTestApplication;
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import javax.inject.Inject;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.robolectric.annotation.Config;
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/**
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* Tests that the Hilt view model factory doesn't cause errors with non-Hilt view models. This was
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* a problem at one point because if the non-Hilt view model is accessed before saved state
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* restoration happens, even if the non-Hilt view model doesn't use saved state, it can cause an
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* error because the default Hilt view model factory does use saved state. This test ensures we
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* still allow non-Hilt view models without saved state to be used before saved state is restored.
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*/
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@HiltAndroidTest
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@RunWith(AndroidJUnit4.class)
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// Robolectric requires Java9 to run API 29 and above, so use API 28 instead
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@Config(sdk = Build.VERSION_CODES.P, application = HiltTestApplication.class)
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public class ActivityInjectedViewModelTest {
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private static final String DATA_KEY = "TEST_KEY";
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@Rule public final HiltAndroidRule rule = new HiltAndroidRule(this);
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@Test
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public void memberInjectedViewModelWithSavedState() {
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final Intent intent = new Intent(getApplicationContext(), TestActivity.class);
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intent.putExtra(DATA_KEY, "test data");
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try (ActivityScenario<TestActivity> scenario = ActivityScenario.launch(intent)) {
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scenario.onActivity(activity -> assertThat(activity.myViewModel).isNotNull());
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}
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}
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@AndroidEntryPoint(FragmentActivity.class)
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public static final class TestActivity extends Hilt_ActivityInjectedViewModelTest_TestActivity {
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@Inject MyViewModel myViewModel;
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}
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@Module
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@InstallIn(ActivityComponent.class)
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static final class MyViewModelModel {
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@Provides
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static MyViewModel provideModel(FragmentActivity activity) {
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return new ViewModelProvider(activity).get(MyViewModel.class);
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}
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}
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public static final class MyViewModel extends ViewModel {}
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}
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