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*
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* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/*
* @ test
* @ bug 4017158 8180410
* @ library / test / lib
* @ build jdk . test . lib . RandomFactory
* @ run testng Write
* @ summary Check for correct implementation of ByteArrayInputStream . write
* @ key randomness
*/
import java.io.ByteArrayOutputStream;
import java.util.Arrays;
import java.util.Random;
import jdk.test.lib.RandomFactory;
import org.testng.annotations.Test;
import static org.testng.Assert .*;
public class Write {
private static void doBoundsTest(byte [] b, int off, int len,
ByteArrayOutputStream baos)
throws Exception {
if (b != null ) {
System.out.println("ByteArrayOutStream.write: b.length = " +
b.length + " off = " + off + " len = " + len);
} else {
System.out.println("ByteArrayOutStream.write: b is null off = " +
off + " len = " + len);
}
try {
baos.write(b, off, len);
} catch (IndexOutOfBoundsException e) {
System.out.println("IndexOutOfBoundsException is thrown: OKAY" );
} catch (NullPointerException e) {
System.out.println("NullPointerException is thrown: OKAY" );
} catch (Throwable e){
throw new RuntimeException("Unexpected Exception is thrown" , e);
}
if (b != null ) {
System.out.println("ByteArrayOutStream.writeBytes: b.length = " +
b.length);
} else {
System.out.println("ByteArrayOutStream.writeBytes: b is null" );
}
try {
baos.writeBytes(b);
} catch (NullPointerException e) {
System.out.println("NullPointerException is thrown: OKAY" );
} catch (Throwable e){
throw new RuntimeException("Unexpected Exception is thrown" , e);
}
}
@Test
public static void boundsTest() throws Exception {
byte array1[] = {1 , 2 , 3 , 4 , 5 }; // Simple array
//Create new ByteArrayOutputStream object
ByteArrayOutputStream y1 = new ByteArrayOutputStream(5 );
doBoundsTest(array1, 0 , Integer.MAX_VALUE , y1);
doBoundsTest(array1, 0 , array1.length+100 , y1);
doBoundsTest(array1, -1 , 2 , y1);
doBoundsTest(array1, 0 , -1 , y1);
doBoundsTest(null , 0 , 2 , y1);
}
@Test
public static void writeTest() throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Random rnd = RandomFactory.getRandom();
final int size = 17 + rnd.nextInt(128 );
byte [] b = new byte [size];
rnd.nextBytes(b);
int off1 = rnd.nextInt(size / 4 ) + 1 ;
int len1 = Math.min(rnd.nextInt(size / 4 ) + 1 , size - off1);
int off2 = rnd.nextInt(size / 2 ) + 1 ;
int len2 = Math.min(rnd.nextInt(size / 2 ) + 1 , size - off2);
System.out.format("size: %d, off1: %d, len1: %d, off2: %d, len2: %d%n" ,
size, off1, len1, off2, len2);
baos.write(b, off1, len1);
byte [] b1 = baos.toByteArray();
assertEquals(b1.length, len1, "Array length test 1 failed." );
assertEquals(b1, Arrays.copyOfRange(b, off1, off1 + len1),
"Array equality test 1 failed." );
baos.write(b, off2, len2);
byte [] b2 = baos.toByteArray();
assertEquals(b2.length, len1 + len2, "Array length test 2 failed." );
assertEquals(Arrays.copyOfRange(b2, 0 , len1),
Arrays.copyOfRange(b, off1, off1 + len1),
"Array equality test 2A failed." );
assertEquals(Arrays.copyOfRange(b2, len1, len1 + len2),
Arrays.copyOfRange(b, off2, off2 + len2),
"Array equality test 2B failed." );
baos.writeBytes(b);
byte [] b3 = baos.toByteArray();
int len3 = len1 + len2 + b.length;
if (b3.length != len1 + len2 + b.length) {
throw new RuntimeException("Array length test 3 failed." );
}
assertEquals(b3.length, len3, "Array length test 3 failed." );
assertEquals(Arrays.copyOfRange(b3, 0 , len1),
Arrays.copyOfRange(b, off1, off1 + len1),
"Array equality test 3A failed." );
assertEquals(Arrays.copyOfRange(b3, len1, len1 + len2),
Arrays.copyOfRange(b, off2, off2 + len2),
"Array equality test 3B failed." );
assertEquals(Arrays.copyOfRange(b3, len1 + len2, len3), b,
"Array equality test 3C failed." );
}
}
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