Add "Show key presses" to input developer options

Bug: 283524254
Bug: 282005442
Test: atest ShowKeyPressesPreferenceControllerTest
Test: manual
Change-Id: I120c8bf607a6073938eda91975e247905982c94d

tests/robotests/src/com/android/settings/development/ShowKeyPressesPreferenceControllerTest.java

@@ -0,0 +1,110 @@
+/*
+ * Copyright 2023 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.development;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.provider.Settings;
+
+import androidx.preference.PreferenceScreen;
+import androidx.preference.SwitchPreference;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class ShowKeyPressesPreferenceControllerTest {
+
+    @Mock
+    private PreferenceScreen mScreen;
+    @Mock
+    private SwitchPreference mPreference;
+
+    private Context mContext;
+
+    private ShowKeyPressesPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = new ShowKeyPressesPreferenceController(mContext);
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+        mController.displayPreference(mScreen);
+    }
+
+    @Test
+    public void updateState_showKeyPressesEnabled_shouldCheckedPreference() {
+        Settings.System.putInt(mContext.getContentResolver(),
+                Settings.System.SHOW_KEY_PRESSES, ShowTapsPreferenceController.SETTING_VALUE_ON);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setChecked(true);
+    }
+
+    @Test
+    public void updateState_showKeyPressesDisabled_shouldUncheckedPreference() {
+        Settings.System.putInt(mContext.getContentResolver(),
+                Settings.System.SHOW_KEY_PRESSES, ShowTapsPreferenceController.SETTING_VALUE_OFF);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setChecked(false);
+    }
+
+    @Test
+    public void onPreferenceChange_preferenceChecked_shouldEnableShowKeyPresses() {
+        mController.onPreferenceChange(mPreference, true /* new value */);
+
+        final int showKeyPresses = Settings.System.getInt(mContext.getContentResolver(),
+                Settings.System.SHOW_KEY_PRESSES, -1 /* default */);
+
+        assertThat(showKeyPresses).isEqualTo(ShowTapsPreferenceController.SETTING_VALUE_ON);
+    }
+
+    @Test
+    public void onPreferenceChange_preferenceUnchecked_shouldDisableShowKeyPresses() {
+        mController.onPreferenceChange(mPreference, false /* new value */);
+
+        final int showTapsMode = Settings.System.getInt(mContext.getContentResolver(),
+                Settings.System.SHOW_KEY_PRESSES, -1 /* default */);
+
+        assertThat(showTapsMode).isEqualTo(ShowTapsPreferenceController.SETTING_VALUE_OFF);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchDisabled_preferenceShouldBeEnabled() {
+        mController.onDeveloperOptionsSwitchDisabled();
+
+        final int showTapsMode = Settings.System.getInt(mContext.getContentResolver(),
+                Settings.System.SHOW_KEY_PRESSES, -1 /* default */);
+
+        assertThat(showTapsMode).isEqualTo(ShowTapsPreferenceController.SETTING_VALUE_OFF);
+        verify(mPreference).setEnabled(false);
+        verify(mPreference).setChecked(false);
+    }
+}