/*
* Copyright 2002-2012 Drew Noakes
*
* 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.
*
* More information about this project is available at:
*
* http://drewnoakes.com/code/exif/
* http://code.google.com/p/metadata-extractor/
*/
package com.drew.lang;
import com.drew.imaging.jpeg.JpegMetadataReader;
import com.drew.imaging.jpeg.JpegSegmentData;
import com.drew.lang.annotations.NotNull;
import com.drew.metadata.Metadata;
import junit.framework.TestCase;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
/**
* @author Drew Noakes http://drewnoakes.com
*/
public class TestHelper
{
public static void assertEqualArrays(@NotNull byte[] array1, @NotNull byte[] array2)
{
TestCase.assertEquals("Equal array length", array1.length, array2.length);
for (int i = 0; i<array1.length; i++)
TestCase.assertEquals("Equal value at index " + i, array1[i], array2[i]);
}
@NotNull
public static byte[] loadFileBytes(@NotNull File file) throws IOException
{
long length = file.length();
if (length > Integer.MAX_VALUE)
throw new IOException("File is too large to be read into memory.");
byte[] bytes = new byte[(int)length];
InputStream stream = new FileInputStream(file);
try {
// Read in the bytes
int offset = 0;
int numRead;
while (offset < bytes.length && (numRead = stream.read(bytes, offset, bytes.length - offset)) >= 0)
offset += numRead;
if (offset < length)
throw new IOException("Could not completely read file " + file.getName());
} finally {
stream.close();
}
return bytes;
}
@NotNull
public static Metadata readJpegMetadataFile(String path) throws ClassNotFoundException, IOException
{
final File file = new File(path);
final JpegSegmentData data = JpegSegmentData.fromFile(file);
return JpegMetadataReader.extractMetadataFromJpegSegmentReader(data);
}
}