/*
 * Copyright (C) 2021 The Dagger Authors.
 *
 * 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 dagger.hilt.android;

import static androidx.test.core.app.ApplicationProvider.getApplicationContext;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertThrows;

import android.os.Build;
import androidx.fragment.app.FragmentActivity;
import androidx.test.core.app.ActivityScenario;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import dagger.hilt.EntryPoints;
import dagger.hilt.android.UsesComponentTestClasses.Foo;
import dagger.hilt.android.UsesComponentTestClasses.FooEntryPoint;
import dagger.hilt.android.UsesComponentTestClasses.UsesComponentQualifier;
import dagger.hilt.android.UsesComponentTestClasses.UsesComponentTestSubcomponent;
import dagger.hilt.android.UsesComponentTestClasses.UsesComponentTestSubcomponentBuilderEntryPoint;
import dagger.hilt.android.internal.testing.TestApplicationComponentManager;
import dagger.hilt.android.testing.HiltAndroidRule;
import dagger.hilt.android.testing.HiltAndroidTest;
import dagger.hilt.android.testing.HiltTestApplication;
import javax.inject.Inject;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.runners.Enclosed;
import org.junit.runner.RunWith;
import org.robolectric.annotation.Config;

/**
 * A test that uses the {@link Enclosed} test runner and provides none of its own test bindings, and
 * therefore uses the shared components.
 */
@RunWith(Enclosed.class)
// Robolectric requires Java9 to run API 29 and above, so use API 28 instead
@Config(sdk = Build.VERSION_CODES.P, application = HiltTestApplication.class)
public final class UsesSharedComponentEnclosedTest {

  @HiltAndroidTest
  @RunWith(AndroidJUnit4.class)
  // Robolectric requires Java9 to run API 29 and above, so use API 28 instead
  @Config(sdk = Build.VERSION_CODES.P, application = HiltTestApplication.class)
  public static final class EnclosedTest {

    @Rule public HiltAndroidRule rule = new HiltAndroidRule(this);

    @Inject @UsesComponentQualifier String injectedString;

    @Test
    public void testInject() {
      rule.inject();
      assertThat(injectedString).isEqualTo("shared_string");
    }

    @Test
    public void testSubcomponent() {
      UsesComponentTestSubcomponent subcomponent =
          EntryPoints.get(
                  getApplicationContext(), UsesComponentTestSubcomponentBuilderEntryPoint.class)
              .mySubcomponentBuilder()
              .id(123)
              .build();

      Foo foo1 = EntryPoints.get(subcomponent, FooEntryPoint.class).foo();
      Foo foo2 = EntryPoints.get(subcomponent, FooEntryPoint.class).foo();

      assertThat(foo1).isNotNull();
      assertThat(foo2).isNotNull();
      assertThat(foo1).isSameInstanceAs(foo2);
    }

    @Test
    public void testActivity() {
      try (ActivityScenario<TestActivity> scenario = ActivityScenario.launch(TestActivity.class)) {
        scenario.onActivity(
            activity -> {
              assertThat(activity.activityString).isEqualTo("shared_string");
            });
      }
    }

    @Test
    public void testUsesSharedComponent() {
      HiltTestApplication app = (HiltTestApplication) getApplicationContext();
      Object generatedComponent =
          ((TestApplicationComponentManager) app.componentManager()).generatedComponent();
      assertThat(generatedComponent.getClass().getName())
          .isEqualTo(UsesComponentHelper.defaultComponentName());
    }

    @Test
    public void testLocalComponentNotGenerated() {
      assertThrows(
          ClassNotFoundException.class,
          () -> Class.forName(UsesComponentHelper.perTestComponentName(this)));
    }

    @AndroidEntryPoint(FragmentActivity.class)
    public static final class TestActivity
        extends Hilt_UsesSharedComponentEnclosedTest_EnclosedTest_TestActivity {
      @Inject @UsesComponentQualifier String activityString;
    }
  }
}