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package org.simpleframework.common.buffer;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import org.simpleframework.common.buffer.Buffer;
import org.simpleframework.common.buffer.FileBuffer;
import junit.framework.TestCase;
public class FileBufferTest extends TestCase {
public void testFileBuffer() throws Exception {
File tempFile = File.createTempFile(FileBufferTest.class.getSimpleName(), null);
Buffer buffer = new FileBuffer(tempFile);
buffer.append("abcdefghijklmnopqrstuvwxyz".getBytes());
Buffer alphabet = buffer.allocate();
alphabet.append("ABCDEFGHIJKLMNOPQRSTUVWXYZ".getBytes());
Buffer digits = buffer.allocate();
digits.append("0123456789".getBytes());
expect(buffer, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".getBytes());
expect(alphabet, "ABCDEFGHIJKLMNOPQRSTUVWXYZ".getBytes());
expect(digits, "0123456789".getBytes());
}
private void expect(Buffer buffer, byte[] expect) throws IOException {
InputStream result = buffer.open();
for(int i =0; i < expect.length; i++) {
byte octet = expect[i];
int value = result.read();
if(value < 0) {
throw new IOException("Buffer exhausted too early");
}
assertEquals(octet, (byte)value);
}
assertEquals(-1, result.read());
}
}
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