Don't convert string to lower case in zen mode pref summary

Change-Id: Ibddf6d70b71cfd88b9de70feb12c2a3f01e31b18
Fixes: 32195605
Test: RunSettingsRoboTests

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

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2016 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 android.content.Context;
+
+import com.android.settings.R;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class ZenModeSettingsTest {
+
+    private ZenModeSettings mSettings;
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application.getApplicationContext();
+        mSettings = spy(ZenModeSettings.class);
+        doReturn(mContext).when(mSettings).getContext();
+    }
+
+    @Test
+    public void testAppend_conditionFalse_shouldNotAppend() {
+        String original = "test";
+
+        final String result = mSettings.append(original, false, R.string.zen_mode_alarms);
+
+        assertThat(result).isEqualTo(original);
+    }
+
+    @Test
+    public void testAppend_conditionTrue_shouldAppend() {
+        String original = "test";
+        String alarm = mContext.getString(R.string.zen_mode_alarms);
+
+        final String result = mSettings.append(original, true, R.string.zen_mode_alarms);
+
+        assertThat(result).contains(alarm);
+    }
+
+}