Add Settings for vector-specific PointerIcon scale.

Bug: 305193969
Test: PointerScaleSeekBarControllerTest
Flag: com.android.systemui.enable_vector_cursor_a11y_settings
Change-Id: I2f344f1d5fc6d5c8eb7159570287b8ce6f9ac070

tests/robotests/src/com/android/settings/inputmethod/PointerScaleSeekBarControllerTest.java

@@ -0,0 +1,94 @@
+/*
+ * 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.inputmethod;
+
+import static android.view.flags.Flags.enableVectorCursorA11ySettings;
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assume.assumeTrue;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.widget.SeekBar;
+
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.testutils.shadow.ShadowSystemSettings;
+import com.android.settings.widget.LabeledSeekBarPreference;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+/** Tests for {@link PointerScaleSeekBarController} */
+@RunWith(RobolectricTestRunner.class)
+@Config(shadows = {
+        ShadowSystemSettings.class,
+})
+public class PointerScaleSeekBarControllerTest {
+
+    private static final String PREFERENCE_KEY = "pointer_scale";
+
+    @Rule public MockitoRule mMockitoRule = MockitoJUnit.rule();
+
+    @Mock private PreferenceScreen mPreferenceScreen;
+
+    private Context mContext;
+    private LabeledSeekBarPreference mPreference;
+    private PointerScaleSeekBarController mController;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application;
+        mPreference = new LabeledSeekBarPreference(mContext, null);
+        mController = new PointerScaleSeekBarController(mContext, PREFERENCE_KEY);
+    }
+
+    @Test
+    public void getAvailabilityStatus_flagEnabled() {
+        assumeTrue(enableVectorCursorA11ySettings());
+
+        assertEquals(mController.getAvailabilityStatus(), AVAILABLE);
+    }
+
+    @Test
+    public void onProgressChanged_changeListenerUpdatesSetting() {
+        when(mPreferenceScreen.findPreference(anyString())).thenReturn(mPreference);
+        mController.displayPreference(mPreferenceScreen);
+        SeekBar seekBar = mPreference.getSeekbar();
+        int sliderValue = 1;
+
+        mPreference.onProgressChanged(seekBar, sliderValue, false);
+
+        float expectedScale = 1.5f;
+        float currentScale = Settings.System.getFloatForUser(mContext.getContentResolver(),
+                Settings.System.POINTER_SCALE, -1, UserHandle.USER_CURRENT);
+        assertEquals(expectedScale, currentScale, /* delta= */ 0.001f);
+    }
+}