[Panlingual] Add outside entry.

- video: https://screencast.googleplex.com/cast/NjIxODkzNzYyMjU5MzUzNnwwMWMxYjI1Ny1hMw

Bug: 207743479
Test: local
Change-Id: Iab3ba4d14f581aed7b737521ccba4f62e1c04998

tests/unit/src/com/android/settings/applications/appinfo/AppLocalePickerActivityTest.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2021 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.google.common.truth.Truth.assertThat;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Looper;
+
+import androidx.test.annotation.UiThreadTest;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import com.android.settings.SettingsActivity;
+import com.android.settings.applications.AppInfoBase;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class AppLocalePickerActivityTest {
+    private TestAppLocalePickerActivity mActivity;
+
+    @Before
+    @UiThreadTest
+    public void setUp() {
+        if (Looper.myLooper() == null) {
+            Looper.prepare();
+        }
+        mActivity = new TestAppLocalePickerActivity();
+    }
+
+    @After
+    public void cleanUp() {
+        mActivity = null;
+    }
+
+    @Test
+    public void onCreate_getEntryIntent_returnNull() {
+        TestAppLocalePickerActivity.setCallingPackage(null);
+        Intent intent = new Intent();
+
+        assertThat(mActivity.getEntryIntent(intent)).isEqualTo(null);
+    }
+
+    @Test
+    public void onCreate_getEntryIntent_returnIntentWithPackageName() {
+        String callingPackageName = "com.example.android";
+        TestAppLocalePickerActivity.setCallingPackage(callingPackageName);
+        Intent intent = new Intent();
+
+        Intent entryIntent = mActivity.getEntryIntent(intent);
+
+        Bundle outputBundle =
+                entryIntent.getBundleExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT_ARGUMENTS);
+        String packageName = outputBundle.getString(AppInfoBase.ARG_PACKAGE_NAME);
+        assertThat(packageName).isEqualTo(callingPackageName);
+    }
+
+    private static class TestAppLocalePickerActivity extends AppLocalePickerActivity {
+        private static String sCallingPackage;
+        @Override
+        public String getCallingPackage() {
+            return sCallingPackage;
+        }
+
+        public static void setCallingPackage(String packageName) {
+            sCallingPackage = packageName;
+        }
+    }
+}