28 import java.util.Objects;
29 import java.util.Random;
30 import jdk.test.lib.RandomFactory;
31
32 /* @test
33 * @library /test/lib
34 * @build jdk.test.lib.RandomFactory
35 * @run main ReadAllReadNTransferTo
36 * @bug 8180451
37 * @summary Verify ByteArrayInputStream readAllBytes, readNBytes, and transferTo
38 * @key randomness
39 */
40 public class ReadAllReadNTransferTo {
41 private static final int SIZE = 0x4d4d;
42
43 private static Random random = RandomFactory.getRandom();
44
45 public static void main(String... args) throws IOException {
46 byte[] buf = new byte[SIZE];
47 random.nextBytes(buf);
48 int offset = random.nextInt(SIZE/2);
49 int length = random.nextInt(SIZE - offset);
50
51 ByteArrayInputStream bais =
52 new ByteArrayInputStream(buf, offset, length);
53 int off = random.nextInt(length/2);
54 int len = random.nextInt(length - off);
55
56 byte[] bN = new byte[off + len];
57 if (bais.readNBytes(bN, off, len) != len) {
58 throw new RuntimeException("readNBytes return value");
59 }
60 if (!Arrays.equals(bN, off, off + len,
61 buf, offset, offset + len)) {
62 throw new RuntimeException("readNBytes content");
63 }
64
65 byte[] bAll = bais.readAllBytes();
66 Objects.requireNonNull(bAll, "readAllBytes return value");
67 if (bAll.length != length - len) {
68 throw new RuntimeException("readAllBytes return value length");
69 }
70 if (!Arrays.equals(bAll, 0, bAll.length,
71 buf, offset + len, offset + len + bAll.length)) {
72 throw new RuntimeException("readAllBytes content");
73 }
74
75 // XXX transferTo()
76 bais = new ByteArrayInputStream(buf);
77 ByteArrayOutputStream baos = new ByteArrayOutputStream(buf.length);
78 if (bais.transferTo(baos) != buf.length) {
79 throw new RuntimeException("transferTo return value length");
80 }
81 if (!Arrays.equals(buf, baos.toByteArray())) {
82 throw new RuntimeException("transferTo content");
83 }
84 }
85 }
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28 import java.util.Objects;
29 import java.util.Random;
30 import jdk.test.lib.RandomFactory;
31
32 /* @test
33 * @library /test/lib
34 * @build jdk.test.lib.RandomFactory
35 * @run main ReadAllReadNTransferTo
36 * @bug 8180451
37 * @summary Verify ByteArrayInputStream readAllBytes, readNBytes, and transferTo
38 * @key randomness
39 */
40 public class ReadAllReadNTransferTo {
41 private static final int SIZE = 0x4d4d;
42
43 private static Random random = RandomFactory.getRandom();
44
45 public static void main(String... args) throws IOException {
46 byte[] buf = new byte[SIZE];
47 random.nextBytes(buf);
48 int position = random.nextInt(SIZE/2);
49 int size = random.nextInt(SIZE - position);
50
51 ByteArrayInputStream bais =
52 new ByteArrayInputStream(buf, position, size);
53 int off = random.nextInt(size/2);
54 int len = random.nextInt(size- off);
55
56 byte[] bN = new byte[off + len];
57 if (bais.readNBytes(bN, off, len) != len) {
58 throw new RuntimeException("readNBytes return value");
59 }
60 if (!Arrays.equals(bN, off, off + len,
61 buf, position, position + len)) {
62 throw new RuntimeException("readNBytes content");
63 }
64
65 byte[] bAll = bais.readAllBytes();
66 Objects.requireNonNull(bAll, "readAllBytes return value");
67 if (bAll.length != size - len) {
68 throw new RuntimeException("readAllBytes return value length");
69 }
70 if (!Arrays.equals(bAll, 0, bAll.length,
71 buf, position + len, position + len + bAll.length)) {
72 throw new RuntimeException("readAllBytes content");
73 }
74
75 // XXX transferTo()
76 bais = new ByteArrayInputStream(buf);
77 ByteArrayOutputStream baos = new ByteArrayOutputStream(buf.length);
78 if (bais.transferTo(baos) != buf.length) {
79 throw new RuntimeException("transferTo return value length");
80 }
81 if (!Arrays.equals(buf, baos.toByteArray())) {
82 throw new RuntimeException("transferTo content");
83 }
84 }
85 }
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