tests/robotests/src/com/android/settings/inputmethod/UserDictionaryListTest.java

/*
 * Copyright (C) 2017 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.inputmethod;

import static com.google.common.truth.Truth.assertThat;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.net.Uri;
import android.provider.UserDictionary;

import com.android.settings.testutils.SettingsRobolectricTestRunner;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.MockitoAnnotations;
import org.robolectric.RuntimeEnvironment;
import org.robolectric.shadows.ShadowContentResolver;

@RunWith(SettingsRobolectricTestRunner.class)
public class UserDictionaryListTest {

    private FakeProvider mContentProvider;

    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);
        mContentProvider = new FakeProvider();
        ShadowContentResolver.registerProviderInternal(UserDictionary.AUTHORITY, mContentProvider);
    }

    @Test
    public void getUserDictionaryLocalesSet_noLocale_shouldReturnEmptySet() {
        mContentProvider.hasDictionary = false;

        final Context context = RuntimeEnvironment.application;
        assertThat(UserDictionaryList.getUserDictionaryLocalesSet(context)).isEmpty();
    }

    public static class FakeProvider extends ContentProvider {

        private boolean hasDictionary = true;

        @Override
        public boolean onCreate() {
            return false;
        }

        @Override
        public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
                String sortOrder) {
            if (hasDictionary) {
                final MatrixCursor cursor = new MatrixCursor(
                        new String[]{UserDictionary.Words.LOCALE});
                cursor.addRow(new Object[]{"en"});
                cursor.addRow(new Object[]{"es"});
                return cursor;
            } else {
                return null;
            }
        }

        @Override
        public String getType(Uri uri) {
            return null;
        }

        @Override
        public Uri insert(Uri uri, ContentValues values) {
            return null;
        }

        @Override
        public int delete(Uri uri, String selection, String[] selectionArgs) {
            return 0;
        }

        @Override
        public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
            return 0;
        }
    }
}