--- /dev/null 2017-05-22 14:23:57.000000000 -0700 +++ new/test/javax/imageio/stream/ReadFullyTest.java 2017-05-22 14:23:57.000000000 -0700 @@ -0,0 +1,146 @@ +/* + * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * 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). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +/* + * @test + * @bug 4422263 + * @summary Checks that ImageInputStream.readFully(type[], int int) handles sign + * extension and byte ordering correctly + */ + +import java.io.ByteArrayInputStream; +import java.io.InputStream; +import java.nio.ByteOrder; + +import javax.imageio.stream.ImageInputStream; +import javax.imageio.stream.MemoryCacheImageInputStream; + +public class ReadFullyTest { + + static final ByteOrder bigEndian = ByteOrder.BIG_ENDIAN; + static final ByteOrder littleEndian = ByteOrder.LITTLE_ENDIAN; + + private static void expect(long e, long g) { + if (e != g) { + throw new RuntimeException("Expected " + e + ", got " + g); + } + } + + public static void main (String args[]) { + try { + byte[] b = { + (byte)0x11, (byte)0x22, // low low + (byte)0x44, (byte)0x99, // low high + (byte)0xAA, (byte)0x33, // high low + (byte)0xBB, (byte)0xCC // high high + }; + InputStream in = new ByteArrayInputStream(b); + ImageInputStream iin = new MemoryCacheImageInputStream(in); + + short[] s = new short[b.length/2]; + char[] c = new char[b.length/2]; + int[] i = new int[b.length/4]; + long[] l = new long[b.length/8]; + float[] f = new float[b.length/4]; + double[] d = new double[b.length/8]; + + iin.seek(0L); + iin.setByteOrder(bigEndian); + iin.readFully(s, 0, s.length); + expect(s[0] & 0xffff, 0x1122); + expect(s[1] & 0xffff, 0x4499); + expect(s[2] & 0xffff, 0xAA33); + expect(s[3] & 0xffff, 0xBBCC); + + iin.seek(0L); + iin.setByteOrder(littleEndian); + iin.readFully(s, 0, s.length); + expect(s[0] & 0xffff, 0x2211); + expect(s[1] & 0xffff, 0x9944); + expect(s[2] & 0xffff, 0x33AA); + expect(s[3] & 0xffff, 0xCCBB); + + iin.seek(0L); + iin.setByteOrder(bigEndian); + iin.readFully(c, 0, c.length); + expect(c[0], 0x1122); + expect(c[1], 0x4499); + expect(c[2], 0xAA33); + expect(c[3], 0xBBCC); + + iin.seek(0L); + iin.setByteOrder(littleEndian); + iin.readFully(c, 0, c.length); + expect(c[0], 0x2211); + expect(c[1], 0x9944); + expect(c[2], 0x33AA); + expect(c[3], 0xCCBB); + + iin.seek(0L); + iin.setByteOrder(bigEndian); + iin.readFully(i, 0, i.length); + expect(i[0] & 0xffffffff, 0x11224499); + expect(i[1] & 0xffffffff, 0xAA33BBCC); + + iin.seek(0L); + iin.setByteOrder(littleEndian); + iin.readFully(i, 0, i.length); + expect(i[0] & 0xffffffff, 0x99442211); + expect(i[1] & 0xffffffff, 0xCCBB33AA); + + iin.seek(0L); + iin.setByteOrder(bigEndian); + iin.readFully(f, 0, f.length); + expect(Float.floatToIntBits(f[0]) & 0xffffffff, 0x11224499); + expect(Float.floatToIntBits(f[1]) & 0xffffffff, 0xAA33BBCC); + + iin.seek(0L); + iin.setByteOrder(littleEndian); + iin.readFully(f, 0, f.length); + expect(Float.floatToIntBits(f[0]) & 0xffffffff, 0x99442211); + expect(Float.floatToIntBits(f[1]) & 0xffffffff, 0xCCBB33AA); + + iin.seek(0L); + iin.setByteOrder(bigEndian); + iin.readFully(l, 0, l.length); + expect(l[0], 0x11224499AA33BBCCL); + + iin.seek(0L); + iin.setByteOrder(littleEndian); + iin.readFully(l, 0, l.length); + expect(l[0], 0xCCBB33AA99442211L); + + iin.seek(0L); + iin.setByteOrder(bigEndian); + iin.readFully(d, 0, d.length); + expect(Double.doubleToLongBits(d[0]), 0x11224499AA33BBCCL); + + iin.seek(0L); + iin.setByteOrder(littleEndian); + iin.readFully(d, 0, d.length); + expect(Double.doubleToLongBits(d[0]), 0xCCBB33AA99442211L); + } catch (Exception ex) { + throw new RuntimeException("Got exception " + ex); + } + } +}