Migrate robolectric tests to junit tests

This change do the 2 things:

1. Add new junit tests files which replace robolectric
   RobolectricTestRunner & RuntimeEnvironment with
   AndroidX objects without problem.
2. Remove the robolectric test files which have it's new junit files.

This change migrate 103 files, there are still 1209
files to go.

Bug: 174728471
Test: atest
      make RunSettingsRoboTests
Change-Id: I15ed3f4745b85862f720aabbf710ce1475aced93

tests/unit/src/com/android/settings/sound/MediaControlsPreferenceControllerTest.java

@@ -0,0 +1,97 @@
+/*
+ * 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.sound;
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.provider.Settings;
+
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class MediaControlsPreferenceControllerTest {
+
+    private static final String KEY = "media_controls_resume_switch";
+
+    private Context mContext;
+    private int mOriginalQs;
+    private int mOriginalResume;
+    private ContentResolver mContentResolver;
+    private MediaControlsPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        mContentResolver = mContext.getContentResolver();
+        mOriginalQs = Settings.Global.getInt(mContentResolver,
+                Settings.Global.SHOW_MEDIA_ON_QUICK_SETTINGS, 1);
+        mOriginalResume = Settings.Secure.getInt(mContentResolver,
+                Settings.Secure.MEDIA_CONTROLS_RESUME, 1);
+        mController = new MediaControlsPreferenceController(mContext, KEY);
+    }
+
+    @After
+    public void tearDown() {
+        Settings.Global.putInt(mContentResolver, Settings.Global.SHOW_MEDIA_ON_QUICK_SETTINGS,
+                mOriginalQs);
+        Settings.Secure.putInt(mContentResolver, Settings.Secure.MEDIA_CONTROLS_RESUME,
+                mOriginalResume);
+    }
+
+    @Test
+    public void getAvailability_returnAvailable() {
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
+    }
+
+    @Test
+    public void setChecked_enable_shouldTurnOn() {
+        Settings.Global.putInt(mContentResolver, Settings.Global.SHOW_MEDIA_ON_QUICK_SETTINGS, 1);
+        Settings.Secure.putInt(mContentResolver, Settings.Secure.MEDIA_CONTROLS_RESUME, 1);
+
+        assertThat(mController.isChecked()).isTrue();
+
+        mController.setChecked(false);
+
+        assertThat(Settings.Secure.getInt(mContentResolver,
+                Settings.Secure.MEDIA_CONTROLS_RESUME, -1)).isEqualTo(0);
+    }
+
+    @Test
+    public void setChecked_disable_shouldTurnOff() {
+        Settings.Global.putInt(mContentResolver, Settings.Global.SHOW_MEDIA_ON_QUICK_SETTINGS, 1);
+        Settings.Secure.putInt(mContentResolver, Settings.Secure.MEDIA_CONTROLS_RESUME, 0);
+
+        assertThat(mController.isChecked()).isFalse();
+
+        mController.setChecked(true);
+
+        assertThat(Settings.Secure.getInt(mContentResolver,
+                Settings.Secure.MEDIA_CONTROLS_RESUME, -1)).isEqualTo(1);
+    }
+}