Add test cases for legacy components.

Bug: 168567356
Test: make RunSettingsRoboTests ROBOTEST_FILTER=AnimatedImagePreferenceTest
&& make RunSettingsRoboTests ROBOTEST_FILTER=DividerAllowedBelowPreferenceTest
&& make RunSettingsRoboTests ROBOTEST_FILTER=DividerSwitchPreference

Change-Id: Ibe1add4ac6509f456ea76a6053f43c894e410eeb

tests/robotests/src/com/android/settings/accessibility/AnimatedImagePreferenceTest.java

@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * 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 com.android.settings.accessibility;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+
+import android.content.Context;
+import android.graphics.drawable.AnimatedImageDrawable;
+import android.net.Uri;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.ImageView;
+
+import androidx.preference.PreferenceViewHolder;
+
+import com.android.settings.R;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.mockito.Spy;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+/** Tests for {@link AnimatedImagePreference}. */
+@RunWith(RobolectricTestRunner.class)
+public class AnimatedImagePreferenceTest {
+    private Uri mImageUri;
+    private View mRootView;
+    private PreferenceViewHolder mViewHolder;
+    private AnimatedImagePreference mAnimatedImagePreference;
+
+    @Spy
+    private ImageView mImageView;
+
+    @Mock
+    private AnimatedImageDrawable mAnimatedImageDrawable;
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+
+        final Context context = RuntimeEnvironment.application;
+        final LayoutInflater inflater = LayoutInflater.from(context);
+        mRootView = spy(inflater.inflate(R.layout.preference_animated_image, /* root= */ null));
+        mViewHolder = spy(PreferenceViewHolder.createInstanceForTests(mRootView));
+        mImageView = spy(new ImageView(context));
+
+        mAnimatedImagePreference = new AnimatedImagePreference(context);
+        mImageUri = new Uri.Builder().build();
+    }
+
+    @Test
+    public void readImageUri_animatedImage_startAnimation() {
+        doReturn(mImageView).when(mRootView).findViewById(R.id.animated_img);
+        doReturn(mAnimatedImageDrawable).when(mImageView).getDrawable();
+
+        mAnimatedImagePreference.setImageUri(mImageUri);
+        mAnimatedImagePreference.onBindViewHolder(mViewHolder);
+
+        verify(mAnimatedImageDrawable).start();
+    }
+
+    @Test
+    public void setImageUri_viewNotExist_setFail() {
+        doReturn(null).when(mRootView).findViewById(R.id.animated_img);
+
+        mAnimatedImagePreference.setImageUri(mImageUri);
+        mAnimatedImagePreference.onBindViewHolder(mViewHolder);
+
+        verify(mImageView, never()).setImageURI(mImageUri);
+    }
+
+    @Test
+    public void setMaxHeight_success() {
+        final int maxHeight = 100;
+        doReturn(mImageView).when(mRootView).findViewById(R.id.animated_img);
+
+        mAnimatedImagePreference.setMaxHeight(maxHeight);
+        mAnimatedImagePreference.onBindViewHolder(mViewHolder);
+
+        assertThat(mImageView.getMaxHeight()).isEqualTo(maxHeight);
+    }
+}

tests/robotests/src/com/android/settings/accessibility/DividerAllowedBelowPreferenceTest.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * 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 com.android.settings.accessibility;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.internal.verification.VerificationModeFactory.times;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+
+import androidx.preference.PreferenceViewHolder;
+
+import com.android.settings.R;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+/** Tests for {@link DividerAllowedBelowPreference}. */
+@RunWith(RobolectricTestRunner.class)
+public class DividerAllowedBelowPreferenceTest {
+    private final Context mContext = RuntimeEnvironment.application;
+    private PreferenceViewHolder mViewHolder;
+
+    @Before
+    public void setUp() {
+        final LayoutInflater inflater = LayoutInflater.from(mContext);
+        final View rootView =
+                inflater.inflate(R.layout.preference, /* root= */ null);
+        mViewHolder = spy(PreferenceViewHolder.createInstanceForTests(rootView));
+    }
+
+    @Test
+    public void onBindViewHolder_dividerAllowedBelow() {
+        final DividerAllowedBelowPreference dividerAllowedBelowPreference =
+                new DividerAllowedBelowPreference(mContext);
+
+        dividerAllowedBelowPreference.onBindViewHolder(mViewHolder);
+
+        // One time was in parent, the other time was in child.
+        verify(mViewHolder, times(2)).setDividerAllowedBelow(true);
+    }
+}

tests/robotests/src/com/android/settings/accessibility/DividerSwitchPreferenceTest.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * 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 com.android.settings.accessibility;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.internal.verification.VerificationModeFactory.times;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+
+import androidx.preference.PreferenceViewHolder;
+
+import com.android.settings.R;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+/** Tests for {@link DividerSwitchPreference}. */
+@RunWith(RobolectricTestRunner.class)
+public class DividerSwitchPreferenceTest {
+    private final Context mContext = RuntimeEnvironment.application;
+    private View mRootView;
+    private PreferenceViewHolder mViewHolder;
+    private DividerSwitchPreference mDividerSwitchPreference;
+
+    @Before
+    public void setUp() {
+        initRootView();
+        initPreference();
+    }
+
+    @Test
+    public void setDividerAllowedAbove_allowed_success() {
+        mDividerSwitchPreference.setDividerAllowedAbove(true);
+        mDividerSwitchPreference.onBindViewHolder(mViewHolder);
+
+        // One time was in parent, the other time was in child.
+        verify(mViewHolder, times(2)).setDividerAllowedAbove(true);
+    }
+
+    @Test
+    public void setDividerAllowedBelow_allowed_success() {
+        mDividerSwitchPreference.setDividerAllowedBelow(true);
+        mDividerSwitchPreference.onBindViewHolder(mViewHolder);
+
+        // One time was in parent, the other time was in child.
+        verify(mViewHolder, times(2)).setDividerAllowedBelow(true);
+    }
+
+    @Test
+    public void setSwitchVisibility_visible_success() {
+        final View view = spy(new View(mContext));
+        doReturn(view).when(mRootView).findViewById(android.R.id.widget_frame);
+
+        mDividerSwitchPreference.setSwitchVisibility(View.VISIBLE);
+        mDividerSwitchPreference.onBindViewHolder(mViewHolder);
+
+        assertThat(view.getVisibility()).isEqualTo(View.VISIBLE);
+    }
+
+    private void initRootView() {
+        final LayoutInflater inflater = LayoutInflater.from(mContext);
+        mRootView = spy(inflater.inflate(R.layout.preference_widget_switch, /* root= */ null));
+        mViewHolder = spy(PreferenceViewHolder.createInstanceForTests(mRootView));
+    }
+
+    private void initPreference() {
+        mDividerSwitchPreference = new DividerSwitchPreference(mContext);
+        mDividerSwitchPreference.setDividerAllowedAbove(false);
+        mDividerSwitchPreference.setDividerAllowedBelow(false);
+        mDividerSwitchPreference.setSwitchVisibility(View.INVISIBLE);
+    }
+}