Merge "Create an #isAppInstalled() util method" into tm-dev

packages/SettingsLib/src/com/android/settingslib/applications/AppUtils.java

@@ -286,6 +286,19 @@ public class AppUtils {
         }
     }
 
+    /**
+     * Returns a boolean indicating whether this app  is installed or not.
+     *
+     * @param appEntry AppEntry of ApplicationsState.
+     * @return true if the app is in installed state.
+     */
+    public static boolean isAppInstalled(ApplicationsState.AppEntry appEntry) {
+        if (appEntry == null || appEntry.info == null) {
+            return false;
+        }
+        return (appEntry.info.flags & ApplicationInfo.FLAG_INSTALLED) != 0;
+    }
+
     private static void setAppEntryMounted(ApplicationsState.AppEntry appEntry, boolean mounted) {
         if (appEntry.mounted != mounted) {
             synchronized (appEntry) {

packages/SettingsLib/tests/robotests/src/com/android/settingslib/applications/AppUtilsTest.java

@@ -129,6 +129,28 @@ public class AppUtilsTest {
         assertThat(mAppIconCacheManager.get(APP_PACKAGE_NAME, APP_UID)).isNotNull();
     }
 
+    @Test
+    public void isAppInstalled_noAppEntry_shouldReturnFalse() {
+        assertThat(AppUtils.isAppInstalled(null)).isFalse();
+    }
+
+    @Test
+    public void isAppInstalled_hasAppEntryWithInstalledFlag_shouldReturnTrue() {
+        final ApplicationsState.AppEntry appEntry = mock(ApplicationsState.AppEntry.class);
+        appEntry.info = new ApplicationInfo();
+        appEntry.info.flags = ApplicationInfo.FLAG_INSTALLED;
+
+        assertThat(AppUtils.isAppInstalled(appEntry)).isTrue();
+    }
+
+    @Test
+    public void isAppInstalled_hasAppEntryWithoutInstalledFlag_shouldReturnFalse() {
+        final ApplicationsState.AppEntry appEntry = mock(ApplicationsState.AppEntry.class);
+        appEntry.info = new ApplicationInfo();
+
+        assertThat(AppUtils.isAppInstalled(appEntry)).isFalse();
+    }
+
     private ApplicationsState.AppEntry createAppEntry(ApplicationInfo appInfo, int id) {
         ApplicationsState.AppEntry appEntry = new ApplicationsState.AppEntry(mContext, appInfo, id);
         appEntry.label = "label";