Fix potential crash in AppAllServicesPreferenceController

This CL contains two fixes:

- Fix potentialcrash when calling getAvailabilityStatus, we should use
  the latest packageName to decide.

- Add test class

Bug: 258270151
Test: atest
Change-Id: I3e6aa7e0773a73d2e3dfa996e42087f3ec80627b

src/com/android/settings/applications/appinfo/AppAllServicesPreferenceController.java

@@ -47,19 +47,10 @@ public class AppAllServicesPreferenceController extends AppInfoPreferenceControl
 
     private String mPackageName;
 
-    private boolean mCanPackageHandleAllServicesIntent;
-    private boolean mIsLocationProvider;
-
-
     public AppAllServicesPreferenceController(Context context,
             String preferenceKey) {
         super(context, preferenceKey);
         mPackageManager = context.getPackageManager();
-
-        // Set to false till we can confirm that the package can handle the intent.
-        mCanPackageHandleAllServicesIntent = false;
-        // Set to false till we can confirm that the package is a location provider.
-        mIsLocationProvider = false;
     }
 
     @Override
@@ -71,9 +62,8 @@ public class AppAllServicesPreferenceController extends AppInfoPreferenceControl
         }
     }
 
-    @VisibleForTesting
     @Nullable
-    CharSequence getStorageSummary() {
+    private CharSequence getStorageSummary() {
         ResolveInfo resolveInfo = getResolveInfo(PackageManager.GET_META_DATA);
         if (resolveInfo == null) {
             Log.d(TAG, "mResolveInfo is null.");
@@ -96,18 +86,20 @@ public class AppAllServicesPreferenceController extends AppInfoPreferenceControl
 
     @Override
     public int getAvailabilityStatus() {
-        if (mCanPackageHandleAllServicesIntent && mIsLocationProvider) {
+        if (canPackageHandleIntent() && isLocationProvider()) {
             return AVAILABLE;
         }
         return CONDITIONALLY_UNAVAILABLE;
     }
 
-    private boolean isLocationProvider() {
+    @VisibleForTesting
+    boolean isLocationProvider() {
         return Objects.requireNonNull(
                 mContext.getSystemService(LocationManager.class)).isProviderPackage(mPackageName);
     }
 
-    private boolean canPackageHandleIntent() {
+    @VisibleForTesting
+    boolean canPackageHandleIntent() {
         return getResolveInfo(0) != null;
     }
 
@@ -127,14 +119,6 @@ public class AppAllServicesPreferenceController extends AppInfoPreferenceControl
      */
     public void setPackageName(String packageName) {
         mPackageName = packageName;
-
-        //Once we have package name. Update conditions for availability.
-        updateAvailabilityConditions();
-    }
-
-    private void updateAvailabilityConditions() {
-        mCanPackageHandleAllServicesIntent = canPackageHandleIntent();
-        mIsLocationProvider = isLocationProvider();
     }
 
     private void startAllServicesActivity() {

tests/robotests/src/com/android/settings/applications/appinfo/AppAllServicesPreferenceControllerTest.java

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2022 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.appinfo;
+
+import static com.android.settings.core.BasePreferenceController.CONDITIONALLY_UNAVAILABLE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+
+import androidx.preference.Preference;
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.core.BasePreferenceController;
+
+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;
+
+@RunWith(RobolectricTestRunner.class)
+public class AppAllServicesPreferenceControllerTest {
+
+    @Mock
+    private AppInfoDashboardFragment mFragment;
+    @Mock
+    private Preference mPreference;
+
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    private AppAllServicesPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mController = spy(new AppAllServicesPreferenceController(mContext, "test_key"));
+        mController.setParentFragment(mFragment);
+        mController.setPackageName("Package1");
+        final String key = mController.getPreferenceKey();
+        when(mPreference.getKey()).thenReturn(key);
+    }
+
+    @Test
+    public void getAvailabilityStatus_shouldReturnAvailable() {
+        doReturn(true).when(mController).canPackageHandleIntent();
+        doReturn(true).when(mController).isLocationProvider();
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.AVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_canNotHandleIntent_shouldReturnConditionallyUnavailable() {
+        doReturn(false).when(mController).canPackageHandleIntent();
+        doReturn(true).when(mController).isLocationProvider();
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_isNotLocationProvider_shouldReturnConditionallyUnavailable() {
+        doReturn(true).when(mController).canPackageHandleIntent();
+        doReturn(false).when(mController).isLocationProvider();
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_shouldReturnConditionallyUnavailable() {
+        doReturn(false).when(mController).canPackageHandleIntent();
+        doReturn(false).when(mController).isLocationProvider();
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);
+    }
+
+    @Test
+    public void canPackageHandleIntent_nullPackageInfo_shouldNotCrash() {
+        mController.setPackageName(null);
+        mController.canPackageHandleIntent();
+        // no crash
+    }
+
+}