Add setting to hide silent notifs in status bar

Test: atest
Bug: 148444551
Change-Id: If7171ed36984b76552f3f795f0b4652dce5daad3

tests/robotests/src/com/android/settings/notification/SilentStatusBarPreferenceControllerTest.java

@@ -0,0 +1,85 @@
+/*
+ * 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.notification;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+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 SilentStatusBarPreferenceControllerTest {
+
+    @Mock
+    private NotificationBackend mBackend;
+    @Mock
+    private PreferenceScreen mScreen;
+
+    private Context mContext;
+    private SilentStatusBarPreferenceController mController;
+    private Preference mPreference;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = new SilentStatusBarPreferenceController(mContext);
+        mController.setBackend(mBackend);
+        mPreference = new Preference(mContext);
+        mPreference.setKey(mController.getPreferenceKey());
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+    }
+
+    @Test
+    public void isChecked_settingIsOff() {
+        when(mBackend.shouldHideSilentStatusBarIcons(any())).thenReturn(false);
+        assertThat(mController.isChecked()).isFalse();
+    }
+
+    @Test
+    public void isChecked_settingIsOn() {
+        when(mBackend.shouldHideSilentStatusBarIcons(any())).thenReturn(true);
+        assertThat(mController.isChecked()).isTrue();
+    }
+
+    @Test
+    public void setChecked_Off() {
+        mController.setChecked(false);
+        verify(mBackend, times(1)).setHideSilentStatusIcons(false);
+    }
+
+    @Test
+    public void setChecked_On() {
+        mController.setChecked(true);
+        verify(mBackend, times(1)).setHideSilentStatusIcons(true);
+    }
+}