Add test to verify external account settings is shown.

- add a test service that provides a test authenticator and a test
preference screen. Creates corresponding test account and verifies that
the preferences defined in the authenticator is displayed from the
account detail page.

Change-Id: Iab87177ae500d0a36272cf8ecf464139a3dc07cd
Fixes: 35353708
Test: make SettingsUnitTests

tests/unit/src/com/android/settings/accounts/AccountsSettingsTest.java

@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2018 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.accounts;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.content.Context;
+import android.content.Intent;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+import android.support.test.uiautomator.UiDevice;
+import android.support.test.uiautomator.UiObject;
+import android.support.test.uiautomator.UiSelector;
+import android.support.test.uiautomator.UiScrollable;
+import android.support.test.uiautomator.UiObjectNotFoundException;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class AccountsSettingsTest {
+
+    private static final String ACCOUNTS = "Accounts";
+    private static final String ACCOUNT_TYPE = "com.settingstest.account-prefs";
+    private static final String PREF_TITLE = "Test preference for external account";
+
+    private UiDevice mDevice;
+    private Context mContext;
+    private String mTargetPackage;
+
+    @Before
+    public void setUp() {
+        mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
+        mContext = InstrumentationRegistry.getTargetContext();
+        mTargetPackage = mContext.getPackageName();
+    }
+
+    @Test
+    public void testExternalAccountInfoExists() throws UiObjectNotFoundException {
+        // add a test account
+        final String testAccountName = "Test Account";
+        final Account account = new Account(testAccountName, ACCOUNT_TYPE);
+        final AccountManager accountManager = AccountManager.get(mContext);
+        final boolean accountAdded =
+            accountManager.addAccountExplicitly(account, null /* password */, null /* userdata */);
+        assertThat(accountAdded).isTrue();
+
+        // launch Accounts Settings and select the test account
+        launchAccountsSettings();
+        mDevice.findObject(new UiSelector().text(testAccountName)).click();
+        final UiObject testPreference = mDevice.findObject(new UiSelector().text(PREF_TITLE));
+        // remove test account
+        accountManager.removeAccountExplicitly(account);
+
+        assertThat(testPreference.exists()).isTrue();
+    }
+
+    private void launchAccountsSettings() throws UiObjectNotFoundException  {
+        // launch settings
+        Intent settingsIntent = new Intent(Intent.ACTION_MAIN)
+            .addCategory(Intent.CATEGORY_LAUNCHER)
+            .setPackage(mTargetPackage)
+            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        mContext.startActivity(settingsIntent);
+        // selects Accounts
+        final UiScrollable settings = new UiScrollable(
+                new UiSelector().packageName(mTargetPackage).scrollable(true));
+        final String titleAccounts = ACCOUNTS;
+        settings.scrollTextIntoView(titleAccounts);
+        mDevice.findObject(new UiSelector().text(titleAccounts)).click();
+    }
+}

tests/unit/src/com/android/settings/accounts/Authenticator.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2018 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.accounts;
+
+import android.accounts.AbstractAccountAuthenticator;
+import android.accounts.Account;
+import android.accounts.AccountAuthenticatorResponse;
+import android.accounts.AccountManager;
+import android.accounts.NetworkErrorException;
+import android.content.Context;
+import android.os.Bundle;
+
+public class Authenticator extends AbstractAccountAuthenticator {
+
+    public Authenticator(Context context) {
+        super(context);
+    }
+
+    @Override
+    public Bundle editProperties(AccountAuthenticatorResponse r, String s) {
+        return null;
+    }
+
+    @Override
+    public Bundle addAccount(AccountAuthenticatorResponse r, String s, String s2, String[] strings,
+            Bundle bundle) throws NetworkErrorException {
+        final Bundle result = new Bundle();
+        result.putString(AccountManager.KEY_ACCOUNT_NAME, "Test Account");
+        result.putString(AccountManager.KEY_ACCOUNT_TYPE, s);
+        return result;
+    }
+
+    @Override
+    public Bundle confirmCredentials(AccountAuthenticatorResponse r, Account account, Bundle bundle)
+            throws NetworkErrorException {
+        return null;
+    }
+
+    @Override
+    public Bundle getAuthToken(AccountAuthenticatorResponse r, Account account, String s,
+            Bundle bundle) throws NetworkErrorException {
+        return null;
+    }
+
+    @Override
+    public String getAuthTokenLabel(String s) {
+        return s;
+    }
+
+    @Override
+    public Bundle updateCredentials(AccountAuthenticatorResponse r, Account account, String s,
+            Bundle bundle) throws NetworkErrorException {
+        return null;
+    }
+
+    @Override
+    public Bundle hasFeatures(AccountAuthenticatorResponse r, Account account, String[] strings)
+            throws NetworkErrorException {
+        return null;
+    }
+}

tests/unit/src/com/android/settings/accounts/TestAuthService.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2018 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.accounts;
+
+import android.app.Service;
+import android.content.Intent;
+import android.os.IBinder;
+
+public class TestAuthService extends Service {
+
+    private Authenticator mAuthenticator;
+
+    @Override
+    public void onCreate() {
+        mAuthenticator = new Authenticator(this);
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return mAuthenticator.getIBinder();
+    }
+
+}