Add Fast Pair to System Settings

Test: manual - took a screen capture https://photos.app.goo.gl/YgkVkAqxib4DwFs49 unit tests passed.
Bug: 203579197

Change-Id: Ie15ede111f7cdd1fc635fb9c475fe210d3f7f91b
diff --git a/tests/unit/README b/tests/unit/README
index 5a85603..1c4d99f 100644
--- a/tests/unit/README
+++ b/tests/unit/README
@@ -4,7 +4,7 @@
 A single class can also be tested with the following command
 $ atest -c <YourClassName>
 
-// The following instrutions show how to run the test suite using make + adb //
+// The following instructions show how to run the test suite using make + adb //
 
 To build the tests you can use the following command at the root of your android source tree
 $ make SettingsUnitTests
diff --git a/tests/unit/src/com/android/settings/nearby/FastPairPreferenceControllerTest.java b/tests/unit/src/com/android/settings/nearby/FastPairPreferenceControllerTest.java
new file mode 100644
index 0000000..f06be4b
--- /dev/null
+++ b/tests/unit/src/com/android/settings/nearby/FastPairPreferenceControllerTest.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2022 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.nearby;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+
+import android.content.Context;
+import android.os.Looper;
+
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class FastPairPreferenceControllerTest {
+
+    private Context mContext;
+    private FastPairPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        mController = new FastPairPreferenceController(mContext);
+        if (Looper.myLooper() == null) {
+            Looper.prepare();
+        }
+    }
+
+    @Test
+    public void isAvailable_shouldBeTrue() {
+        assertThat(mController.isAvailable()).isTrue();
+    }
+}
diff --git a/tests/unit/src/com/android/settings/nearby/FastPairSettingsFragmentTest.java b/tests/unit/src/com/android/settings/nearby/FastPairSettingsFragmentTest.java
new file mode 100644
index 0000000..faabe8f
--- /dev/null
+++ b/tests/unit/src/com/android/settings/nearby/FastPairSettingsFragmentTest.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2022 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.nearby;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.app.Instrumentation;
+import android.app.settings.SettingsEnums;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class FastPairSettingsFragmentTest {
+
+    private FastPairSettingsFragment mFragment;
+
+    @Before
+    public void setUp() {
+        final Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
+        instrumentation.runOnMainSync(() -> mFragment = new FastPairSettingsFragment());
+    }
+
+    @Test
+    public void getCategoryKey_isNetwork() {
+        assertThat(mFragment.getMetricsCategory())
+                .isEqualTo(SettingsEnums.CONNECTION_DEVICE_ADVANCED_FAST_PAIR);
+    }
+}