[Contrast] Migrate contrast settings into Display

Test: local raven device
Bug: 333905689

Change-Id: Ie94633c23ebe024b8fb48d7ffebdd7b1dfa588da

tests/robotests/src/com/android/settings/display/ContrastPreferenceControllerTest.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2024 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.display;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.platform.test.annotations.DisableFlags;
+import android.platform.test.annotations.EnableFlags;
+import android.platform.test.flag.junit.SetFlagsRule;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.accessibility.Flags;
+import com.android.settings.core.BasePreferenceController;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+/** Tests for {@link ContrastPreferenceController}. */
+@RunWith(RobolectricTestRunner.class)
+public class ContrastPreferenceControllerTest {
+
+    @Rule public final SetFlagsRule mSetFlagsRule = new SetFlagsRule();
+
+    private static final String PREFERENCE_KEY = "preference_key";
+
+    private Context mContext;
+    private ContrastPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        mContext = ApplicationProvider.getApplicationContext();
+        mController = new ContrastPreferenceController(mContext, PREFERENCE_KEY);
+    }
+
+    @Test
+    @EnableFlags(Flags.FLAG_ENABLE_COLOR_CONTRAST_CONTROL)
+    public void getAvailabilityStatus_flagsEnabled_shouldReturnAvailable() {
+        assertThat(mController.getAvailabilityStatus())
+                .isEqualTo(BasePreferenceController.AVAILABLE);
+    }
+
+    @Test
+    @DisableFlags(Flags.FLAG_ENABLE_COLOR_CONTRAST_CONTROL)
+    public void getAvailabilityStatus_flagsDisabled_shouldReturnUnsupported() {
+        assertThat(mController.getAvailabilityStatus())
+                .isEqualTo(BasePreferenceController.UNSUPPORTED_ON_DEVICE);
+    }
+}