Add unit tests for EMBMS file tree

/*

 * 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 android.telephony.mbms;

import static org.junit.Assert.assertEquals;

import android.support.test.runner.AndroidJUnit4;

import android.test.suitebuilder.annotation.SmallTest;

import org.junit.Test;

import org.junit.runner.RunWith;

@RunWith(AndroidJUnit4.class)

public class MbmsReceiverTest {

    @Test

    @SmallTest

    public void testFileHierarchyRecreation() throws Exception {

        String rootPath = "http://www.example.com/files/";

        assertEquals("subdir1/file.txt",

                MbmsDownloadReceiver.getFileRelativePath(rootPath, rootPath + "/subdir1/file.txt"));

        assertEquals("subdir1/subdir2/file.txt",

                MbmsDownloadReceiver.getFileRelativePath(

                        rootPath,

                        rootPath + "/subdir1/subdir2/file.txt"));

        assertEquals("file.txt",

                MbmsDownloadReceiver.getFileRelativePath(

                        rootPath + "/subdir1/file.*",

                        rootPath + "/subdir1/file.txt"));

        assertEquals("file.txt",

                MbmsDownloadReceiver.getFileRelativePath(

                        rootPath + "/subdir1/*",

                        rootPath + "/subdir1/file.txt"));

        assertEquals("subdir1/file.txt",

                MbmsDownloadReceiver.getFileRelativePath(

                        rootPath + "/subdir*",

                        rootPath + "/subdir1/file.txt"));

        assertEquals("file.txt",

                MbmsDownloadReceiver.getFileRelativePath(

                        rootPath,

                        rootPath + "/file.txt"));

        assertEquals("file.txt",

                MbmsDownloadReceiver.getFileRelativePath(

                        rootPath + "/*",

                        rootPath + "/file.txt"));

    }

}