tests/AndroidTests/src/com/android/unit_tests/content/AssetTest.java

/*
 * Copyright (C) 2008 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.unit_tests.content;

import android.content.res.AssetManager;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.SmallTest;

import java.io.IOException;
import java.io.InputStream;

public class AssetTest extends AndroidTestCase {
    private AssetManager mAssets;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        mAssets = mContext.getAssets();
    }

    public static void verifyTextAsset(InputStream is) throws IOException {
        String expectedString = "OneTwoThreeFourFiveSixSevenEightNineTen";
        byte[] buffer = new byte[10];

        int readCount;
        int curIndex = 0;
        while ((readCount = is.read(buffer, 0, buffer.length)) > 0) {
            for (int i = 0; i < readCount; i++) {
                assertEquals("At index " + curIndex
                            + " expected " + expectedString.charAt(curIndex)
                            + " but found " + ((char) buffer[i]),
                        buffer[i], expectedString.charAt(curIndex));
                curIndex++;
            }
        }

        readCount = is.read(buffer, 0, buffer.length);
        assertEquals("Reading end of buffer: expected readCount=-1 but got " + readCount,
                -1, readCount);

        readCount = is.read(buffer, buffer.length, 0);
        assertEquals("Reading end of buffer length 0: expected readCount=0 but got " + readCount,
                0, readCount);

        is.close();
    }

    @SmallTest
    public void testReadToEnd() throws Exception {
        InputStream is = mAssets.open("text.txt");
        verifyTextAsset(is);
    }

    // XXX failing
    public void xxtestListDir() throws Exception {
        String[] files = mAssets.list("");
        assertEquals(1, files.length);
        assertEquals("test.txt", files[0]);
    }
}