Provide a way to ToggleA11yServicePreferenceFragment via Intent

Intent can only open the list of a11y services in Settings currently.
PermissionController needs a way to open the screen with the a11y
service toggle.

Bug: 123693167
Test: manual
Test: atest AccessibilityDetailsSettingsFragmentTest
Change-Id: I32ed39330cf9e4c18a1747521fb65eb911d1c6e4

tests/robotests/src/com/android/settings/accessibility/AccessibilityDetailsSettingsFragmentTest.java

@@ -0,0 +1,146 @@
+/*
+ * Copyright (C) 2019 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.accessibility;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+
+import android.accessibilityservice.AccessibilityServiceInfo;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.os.Bundle;
+import android.view.accessibility.AccessibilityManager;
+
+import androidx.fragment.app.FragmentActivity;
+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;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.shadow.api.Shadow;
+import org.robolectric.shadows.ShadowAccessibilityManager;
+import org.xmlpull.v1.XmlPullParserException;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+@RunWith(RobolectricTestRunner.class)
+public class AccessibilityDetailsSettingsFragmentTest {
+    private final static String PACKAGE_NAME = "com.foo.bar";
+    private final static String CLASS_NAME = PACKAGE_NAME + ".fake_a11y_service";
+    private final static String COMPONENT_NAME = PACKAGE_NAME + "/" + CLASS_NAME;
+
+    private Context mContext;
+    private AccessibilityDetailsSettingsFragment mFragment;
+    private ShadowAccessibilityManager mShadowAccessibilityManager;
+    @Mock private FragmentActivity mActivity;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(RuntimeEnvironment.application);
+        mFragment = spy(new AccessibilityDetailsSettingsFragment());
+        mShadowAccessibilityManager = Shadow.extract(AccessibilityManager.getInstance(mContext));
+        mShadowAccessibilityManager.setInstalledAccessibilityServiceList(getMockServiceList());
+
+        doReturn(mActivity).when(mFragment).getActivity();
+        doReturn(mContext).when(mFragment).getContext();
+    }
+
+    @Test
+    public void onCreate_hasValidExtraComponentName_shouldOpenAccessibilityDetailsSettings() {
+        final Intent intent = new Intent();
+        intent.putExtra(Intent.EXTRA_COMPONENT_NAME, COMPONENT_NAME);
+        doReturn(intent).when(mActivity).getIntent();
+
+        mFragment.onCreate(Bundle.EMPTY);
+
+        verify(mFragment).openAccessibilityDetailsSettingsAndFinish(any());
+    }
+
+    @Test
+    public void onCreate_hasInvalidExtraComponentName_shouldOpenAccessibilityServicesList() {
+        final Intent intent = new Intent();
+        intent.putExtra(Intent.EXTRA_COMPONENT_NAME, PACKAGE_NAME + "/.service");
+        doReturn(intent).when(mActivity).getIntent();
+
+        mFragment.onCreate(Bundle.EMPTY);
+
+        verify(mFragment).openAccessibilitySettingsAndFinish();
+    }
+
+    @Test
+    public void onCreate_hasNoExtraComponentName_shouldOpenAccessibilityServicesList() {
+        final Intent intent = new Intent();
+        doReturn(intent).when(mActivity).getIntent();
+
+        mFragment.onCreate(Bundle.EMPTY);
+
+        verify(mFragment).openAccessibilitySettingsAndFinish();
+    }
+
+    @Test
+    public void onCreate_extraComponentNameIsDisallowed_shouldOpenAccessibilityServicesList() {
+        final Intent intent = new Intent();
+        intent.putExtra(Intent.EXTRA_COMPONENT_NAME, COMPONENT_NAME);
+        doReturn(intent).when(mActivity).getIntent();
+        doReturn(false).when(mFragment).isServiceAllowed(any());
+
+        mFragment.onCreate(Bundle.EMPTY);
+
+        verify(mFragment).openAccessibilitySettingsAndFinish();
+    }
+
+    private AccessibilityServiceInfo getMockAccessibilityServiceInfo() {
+        final ApplicationInfo applicationInfo = new ApplicationInfo();
+        final ServiceInfo serviceInfo = new ServiceInfo();
+        applicationInfo.packageName = PACKAGE_NAME;
+        serviceInfo.packageName = PACKAGE_NAME;
+        serviceInfo.name = CLASS_NAME;
+        serviceInfo.applicationInfo = applicationInfo;
+
+        final ResolveInfo resolveInfo = new ResolveInfo();
+        resolveInfo.serviceInfo = serviceInfo;
+
+        try {
+            final AccessibilityServiceInfo info = new AccessibilityServiceInfo(resolveInfo,
+                    mContext);
+            ComponentName componentName = ComponentName.unflattenFromString(COMPONENT_NAME);
+            info.setComponentName(componentName);
+            return info;
+        } catch (XmlPullParserException | IOException e) {
+            // Do nothing
+        }
+
+        return null;
+    }
+
+    private List<AccessibilityServiceInfo> getMockServiceList() {
+        final List<AccessibilityServiceInfo> infoList = new ArrayList<>();
+        infoList.add(getMockAccessibilityServiceInfo());
+        return infoList;
+    }
+}