Modify text in Apps & notifications settings.

- in Settings->Apps & notifications->Apps->[select app], update the
  header summary to installation status, and move the version text to
  the bottom of the page.
- updatd preference title from Apps to App info
- update preference title from Notifications to App notifications

Bug: 34977561
Test: make RunSettingsRoboTests
Change-Id: I97e9b81c739fb99eaca2cf45fb11f208ad6cd9ca

tests/robotests/src/com/android/settings/applications/InstalledAppDetailsTest.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2017 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.applications;
+
+import android.content.pm.ApplicationInfo;
+
+import com.android.settings.R;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.annotation.Config;
+
+import static com.google.common.truth.Truth.assertThat;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public final class InstalledAppDetailsTest {
+
+    @Test
+    public void getInstallationStatus_notInstalled_shouldReturnUninstalled() {
+        final InstalledAppDetails mAppDetail = new InstalledAppDetails();
+
+        assertThat(mAppDetail.getInstallationStatus(new ApplicationInfo()))
+            .isEqualTo(R.string.not_installed);
+    }
+
+    @Test
+    public void getInstallationStatus_enabled_shouldReturnInstalled() {
+        final InstalledAppDetails mAppDetail = new InstalledAppDetails();
+        final ApplicationInfo info = new ApplicationInfo();
+        info.flags = ApplicationInfo.FLAG_INSTALLED;
+        info.enabled = true;
+
+        assertThat(mAppDetail.getInstallationStatus(info)).isEqualTo(R.string.installed);
+    }
+
+    @Test
+    public void getInstallationStatus_disabled_shouldReturnDisabled() {
+        final InstalledAppDetails mAppDetail = new InstalledAppDetails();
+        final ApplicationInfo info = new ApplicationInfo();
+        info.flags = ApplicationInfo.FLAG_INSTALLED;
+        info.enabled = false;
+
+        assertThat(mAppDetail.getInstallationStatus(info)).isEqualTo(R.string.disabled);
+    }
+
+}