= str.getBytes(CHARSET);
writeShort(os, (short) data.length);
os.write(data);
}
}
Java与C底层数据类型转换(2)
时间:2011-04-13 javaeye snowolf
再写个测试类
Java代码
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import org.junit.Test;
import static org.junit.Assert.*;
/**
*
* @author Snowolf
* @version 1.0
* @since 1.0
*/
public class CIOUtilTest {
/**
* 测试布尔值
*
* @throws IOException
*/
@Test
public final void testBoolean() throws IOException {
boolean input = true;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream os = new DataOutputStream(baos);
CIOUtil.writeBoolean(os, input);
byte[] b = baos.toByteArray();
baos.flush();
baos.close();
ByteArrayInputStream bais = new ByteArrayInputStream(b);
DataInputStream is = new DataInputStream(bais);
boolean output = CIOUtil.readBoolean(is);
bais.close();
assertEquals(input, output);
}
/**
* 测试字节数组
*
* @throws IOException
*/
@Test
public final void testBytes() throws IOException {
byte[] input = "中文".getBytes("UTF-8");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream os = new DataOutputStream(baos);
CIOUtil.writeBytes(os, input);
byte[] b = baos.toByteArray();
baos.flush();
baos.close();
ByteArrayInputStream bais = new ByteArrayInputStream(b);
DataInputStream is = new DataInputStream(bais);
byte[] output = CIOUtil.readBytes(is, 6);
bais.close();
assertArrayEquals(input, output);
}
/**
* 测试字符
*
* @throws IOException
*/
@Test
public final void testChar() throws IOException {
char input = ''中'';
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream os = new DataOutputStream(baos);
CIOUtil.writeChar(os, input);
byte[] b = baos.toByteArray();
baos.flush();
baos.close();
ByteArrayInputStream bais = new ByteArrayInputStream(b);
DataInputStream is = new DataInputStream(bais);
char output = CIOUtil.readChar(is);
bais.close();
assertEquals(input, output);
}
/**
* 测试双精度
*
* @throws IOException
*/
@Test
public final void testDouble() throws IOException {
double input = 1.23456789d;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream os = new DataOutputStream(baos);
CIOUtil.writeDouble(os, input);
byte[] b = baos.toByteArray();
baos.flush();
baos.close();
ByteArrayInputStream bais = new ByteArrayInputStream(b);
DataInputStream is = new DataInputStream(bais);
double output = CIOUtil.readDouble(is);
bais.close();
assertEquals(input, output, 9);
}
/**
* 测试单精度
*
* @throws IOException
*/
@Test
public final void testFloat() throws IOException {
float input = 1.23456789f;
ByteArr
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