Merge "Add a test to check unusual home activities"

tests/NullHomeTest/Android.bp

@@ -0,0 +1,22 @@
+// Copyright 2020 Google Inc. All Rights Reserved.
+//
+// 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.
+
+android_test {
+    name: "NullHomeTest",
+    srcs: ["src/**/*.java"],
+    certificate: "platform",
+    platform_apis: true,
+    static_libs: ["android-support-test"],
+    test_suites: ["device-tests"],
+}

tests/NullHomeTest/AndroidManifest.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2020 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.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.test.nullhome"
+    android:sharedUserId="android.uid.system" >
+
+    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="21" />
+
+    <instrumentation
+        android:name="android.support.test.runner.AndroidJUnitRunner"
+        android:targetPackage="com.android.test.nullhome"
+        android:label="Check if no null Home exists/is enabled" />
+
+    <application android:label="Null Home Test">
+        <uses-library android:name="android.test.runner" />
+    </application>
+</manifest>

tests/NullHomeTest/src/com/android/test/nullhome/NullHomeTest.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2020 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.test.nullhome;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.support.test.InstrumentationRegistry;
+import android.util.Log;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/*
+ * Check if NullHome/SystemUserHome activity does not exist/is disabled.
+ *
+ * SystemUserHome is only enabled in bootable CSI (csi_x86, csi_arm64)
+ * products and should not be enabled in other products.
+ *
+ * Shell's NullHome is empty and caused issues in sevaral manual GUI tests
+ * that try to select/use it, and should be removed.
+ *
+ * Settings' FallbackHome is fine because it's specially handled by Settings.
+ *
+ */
+
+@RunWith(JUnit4.class)
+public class NullHomeTest {
+    private static final String TAG = "NullHomeTest";
+    private Context mContext;
+    private PackageManager mPm;
+
+    @Before
+    public void before() {
+        Log.d(TAG, "beforeClass()");
+        mContext = InstrumentationRegistry.getInstrumentation().getContext();
+        mPm = mContext.getPackageManager();
+    }
+
+    @Test
+    public void checkNullHome() {
+        final List<ResolveInfo> homeActivities = new ArrayList<>();
+
+        mPm.getHomeActivities(homeActivities);
+        for (ResolveInfo activity : homeActivities) {
+            Log.d(TAG, "Home activity: " + activity.activityInfo.packageName);
+            Assert.assertNotEquals(activity.activityInfo.packageName,
+                    "com.android.internal.app.SystemUserHomeActivity");
+            Assert.assertNotEquals(activity.activityInfo.packageName,
+                    "com.android.shell");
+        }
+    }
+}