/*
* #%L
* Common package for I/O and related utilities
* %%
* Copyright (C) 2005 - 2015 Open Microscopy Environment:
* - Board of Regents of the University of Wisconsin-Madison
* - Glencoe Software, Inc.
* - University of Dundee
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
package loci.common.utests;
import static org.testng.AssertJUnit.assertEquals;
import java.io.IOException;
import loci.common.IRandomAccess;
import loci.common.utests.providers.IRandomAccessProvider;
import loci.common.utests.providers.IRandomAccessProviderFactory;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Parameters;
import org.testng.annotations.Test;
/**
* Tests for reading bytes from a loci.common.IRandomAccess.
*
* @see loci.common.IRandomAccess
*/
@Test(groups="readTests")
public class ReadByteSubArrayTest {
private static final byte[] PAGE = new byte[] {
(byte) 0x01, (byte) 0x02, (byte) 0x03, (byte) 0x04,
(byte) 0x05, (byte) 0x06, (byte) 0x07, (byte) 0x08,
(byte) 0x09, (byte) 0x0A, (byte) 0x0B, (byte) 0x0C,
(byte) 0x0D, (byte) 0x0E, (byte) 0xFF, (byte) 0xFE
};
private static final String MODE = "r";
private static final int BUFFER_SIZE = 2;
private IRandomAccess fileHandle;
@Parameters({"provider"})
@BeforeMethod
public void setUp(String provider) throws IOException {
IRandomAccessProviderFactory factory = new IRandomAccessProviderFactory();
IRandomAccessProvider instance = factory.getInstance(provider);
fileHandle = instance.createMock(PAGE, MODE, BUFFER_SIZE);
}
@Test
public void testLength() throws IOException {
assertEquals(16, fileHandle.length());
}
@Test
public void testSequentialReadByte() throws IOException {
byte[] b = new byte[16];
int length = fileHandle.read(b,0,16);
assertEquals(16, fileHandle.getFilePointer());
assertEquals(16, length);
assertEquals(0x01, b[0]);
assertEquals(0x02, b[1]);
assertEquals(0x03, b[2]);
assertEquals(0x04, b[3]);
assertEquals(0x05, b[4]);
assertEquals(0x06, b[5]);
assertEquals(0x07, b[6]);
assertEquals(0x08, b[7]);
assertEquals(0x09, b[8]);
assertEquals(0x0A, b[9]);
assertEquals(0x0B, b[10]);
assertEquals(0x0C, b[11]);
assertEquals(0x0D, b[12]);
assertEquals(0x0E, b[13]);
assertEquals((byte) 0xFF, b[14]);
assertEquals((byte) 0xFE, b[15]);
}
@Test
public void testSeekForwardReadByte() throws IOException {
fileHandle.seek(7);
byte[] b = new byte[4];
int length = fileHandle.read(b,1,2);
assertEquals(9, fileHandle.getFilePointer());
assertEquals(2, length);
assertEquals(0x00, b[0]);
assertEquals(0x08, b[1]);
assertEquals(0x09, b[2]);
assertEquals(0x00, b[3]);
}
@Test
public void testResetReadByte() throws IOException {
byte[] b = new byte[4];
int length = fileHandle.read(b,1,2);
assertEquals(2, fileHandle.getFilePointer());
assertEquals(0x02, length);
assertEquals(0x00, b[0]);
assertEquals(0x01, b[1]);
assertEquals(0x02, b[2]);
assertEquals(0x00, b[3]);
fileHandle.seek(0);
b = new byte[4];
length = fileHandle.read(b,1,2);
assertEquals(0x02, length);
assertEquals(0x00, b[0]);
assertEquals(0x01, b[1]);
assertEquals(0x02, b[2]);
assertEquals(0x00, b[3]);
}
@Test
public void testSeekBackReadByte() throws IOException {
fileHandle.seek(15);
fileHandle.seek(7);
byte[] b = new byte[4];
int length = fileHandle.read(b,1,2);
assertEquals(9, fileHandle.getFilePointer());
assertEquals(2, length);
assertEquals(0x00, b[0]);
assertEquals(0x08, b[1]);
assertEquals(0x09, b[2]);
assertEquals(0x00, b[3]);
}
@Test
public void testRandomAccessReadByte() throws IOException {
testSeekForwardReadByte();
testSeekBackReadByte();
// The test relies on a "new" file or reset file pointer
fileHandle.seek(0);
testResetReadByte();
}
}