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- /*
- * Copyright (C) 2008, 2015 Google Inc.
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - 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.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * 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 OWNER 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.
- */
-
- package org.eclipse.jgit.util;
-
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertTrue;
-
- import org.junit.Test;
-
- public class NBTest {
- @Test
- public void testCompareUInt32() {
- assertTrue(NB.compareUInt32(0, 0) == 0);
- assertTrue(NB.compareUInt32(1, 0) > 0);
- assertTrue(NB.compareUInt32(0, 1) < 0);
- assertTrue(NB.compareUInt32(-1, 0) > 0);
- assertTrue(NB.compareUInt32(0, -1) < 0);
- assertTrue(NB.compareUInt32(-1, 1) > 0);
- assertTrue(NB.compareUInt32(1, -1) < 0);
- }
-
- @Test
- public void testCompareUInt64() {
- assertTrue(NB.compareUInt64(0, 0) == 0);
- assertTrue(NB.compareUInt64(1, 0) > 0);
- assertTrue(NB.compareUInt64(0, 1) < 0);
- assertTrue(NB.compareUInt64(-1, 0) > 0);
- assertTrue(NB.compareUInt64(0, -1) < 0);
- assertTrue(NB.compareUInt64(-1, 1) > 0);
- assertTrue(NB.compareUInt64(1, -1) < 0);
- }
-
- @Test
- public void testDecodeUInt16() {
- assertEquals(0, NB.decodeUInt16(b(0, 0), 0));
- assertEquals(0, NB.decodeUInt16(padb(3, 0, 0), 3));
-
- assertEquals(3, NB.decodeUInt16(b(0, 3), 0));
- assertEquals(3, NB.decodeUInt16(padb(3, 0, 3), 3));
-
- assertEquals(0xde03, NB.decodeUInt16(b(0xde, 3), 0));
- assertEquals(0xde03, NB.decodeUInt16(padb(3, 0xde, 3), 3));
-
- assertEquals(0x03de, NB.decodeUInt16(b(3, 0xde), 0));
- assertEquals(0x03de, NB.decodeUInt16(padb(3, 3, 0xde), 3));
-
- assertEquals(0xffff, NB.decodeUInt16(b(0xff, 0xff), 0));
- assertEquals(0xffff, NB.decodeUInt16(padb(3, 0xff, 0xff), 3));
- }
-
- @Test
- public void testDecodeInt32() {
- assertEquals(0, NB.decodeInt32(b(0, 0, 0, 0), 0));
- assertEquals(0, NB.decodeInt32(padb(3, 0, 0, 0, 0), 3));
-
- assertEquals(3, NB.decodeInt32(b(0, 0, 0, 3), 0));
- assertEquals(3, NB.decodeInt32(padb(3, 0, 0, 0, 3), 3));
-
- assertEquals(0xdeadbeef, NB.decodeInt32(b(0xde, 0xad, 0xbe, 0xef), 0));
- assertEquals(0xdeadbeef, NB.decodeInt32(
- padb(3, 0xde, 0xad, 0xbe, 0xef), 3));
-
- assertEquals(0x0310adef, NB.decodeInt32(b(0x03, 0x10, 0xad, 0xef), 0));
- assertEquals(0x0310adef, NB.decodeInt32(
- padb(3, 0x03, 0x10, 0xad, 0xef), 3));
-
- assertEquals(0xffffffff, NB.decodeInt32(b(0xff, 0xff, 0xff, 0xff), 0));
- assertEquals(0xffffffff, NB.decodeInt32(
- padb(3, 0xff, 0xff, 0xff, 0xff), 3));
- }
-
- @Test
- public void testDecodeUInt32() {
- assertEquals(0L, NB.decodeUInt32(b(0, 0, 0, 0), 0));
- assertEquals(0L, NB.decodeUInt32(padb(3, 0, 0, 0, 0), 3));
-
- assertEquals(3L, NB.decodeUInt32(b(0, 0, 0, 3), 0));
- assertEquals(3L, NB.decodeUInt32(padb(3, 0, 0, 0, 3), 3));
-
- assertEquals(0xdeadbeefL, NB.decodeUInt32(b(0xde, 0xad, 0xbe, 0xef), 0));
- assertEquals(0xdeadbeefL, NB.decodeUInt32(padb(3, 0xde, 0xad, 0xbe,
- 0xef), 3));
-
- assertEquals(0x0310adefL, NB.decodeUInt32(b(0x03, 0x10, 0xad, 0xef), 0));
- assertEquals(0x0310adefL, NB.decodeUInt32(padb(3, 0x03, 0x10, 0xad,
- 0xef), 3));
-
- assertEquals(0xffffffffL, NB.decodeUInt32(b(0xff, 0xff, 0xff, 0xff), 0));
- assertEquals(0xffffffffL, NB.decodeUInt32(padb(3, 0xff, 0xff, 0xff,
- 0xff), 3));
- }
-
- @Test
- public void testDecodeUInt64() {
- assertEquals(0L, NB.decodeUInt64(b(0, 0, 0, 0, 0, 0, 0, 0), 0));
- assertEquals(0L, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0, 0, 0, 0), 3));
-
- assertEquals(3L, NB.decodeUInt64(b(0, 0, 0, 0, 0, 0, 0, 3), 0));
- assertEquals(3L, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0, 0, 0, 3), 3));
-
- assertEquals(0xdeadbeefL, NB.decodeUInt64(b(0, 0, 0, 0, 0xde, 0xad,
- 0xbe, 0xef), 0));
- assertEquals(0xdeadbeefL, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0xde,
- 0xad, 0xbe, 0xef), 3));
-
- assertEquals(0x0310adefL, NB.decodeUInt64(b(0, 0, 0, 0, 0x03, 0x10,
- 0xad, 0xef), 0));
- assertEquals(0x0310adefL, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0x03,
- 0x10, 0xad, 0xef), 3));
-
- assertEquals(0xc0ffee78deadbeefL, NB.decodeUInt64(b(0xc0, 0xff, 0xee,
- 0x78, 0xde, 0xad, 0xbe, 0xef), 0));
- assertEquals(0xc0ffee78deadbeefL, NB.decodeUInt64(padb(3, 0xc0, 0xff,
- 0xee, 0x78, 0xde, 0xad, 0xbe, 0xef), 3));
-
- assertEquals(0x00000000ffffffffL, NB.decodeUInt64(b(0, 0, 0, 0, 0xff,
- 0xff, 0xff, 0xff), 0));
- assertEquals(0x00000000ffffffffL, NB.decodeUInt64(padb(3, 0, 0, 0, 0,
- 0xff, 0xff, 0xff, 0xff), 3));
- assertEquals(0xffffffffffffffffL, NB.decodeUInt64(b(0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff), 0));
- assertEquals(0xffffffffffffffffL, NB.decodeUInt64(padb(3, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff), 3));
- }
-
- @Test
- public void testEncodeInt16() {
- final byte[] out = new byte[16];
-
- prepareOutput(out);
- NB.encodeInt16(out, 0, 0);
- assertOutput(b(0, 0), out, 0);
-
- prepareOutput(out);
- NB.encodeInt16(out, 3, 0);
- assertOutput(b(0, 0), out, 3);
-
- prepareOutput(out);
- NB.encodeInt16(out, 0, 3);
- assertOutput(b(0, 3), out, 0);
-
- prepareOutput(out);
- NB.encodeInt16(out, 3, 3);
- assertOutput(b(0, 3), out, 3);
-
- prepareOutput(out);
- NB.encodeInt16(out, 0, 0xdeac);
- assertOutput(b(0xde, 0xac), out, 0);
-
- prepareOutput(out);
- NB.encodeInt16(out, 3, 0xdeac);
- assertOutput(b(0xde, 0xac), out, 3);
-
- prepareOutput(out);
- NB.encodeInt16(out, 3, -1);
- assertOutput(b(0xff, 0xff), out, 3);
- }
-
- @Test
- public void testEncodeInt32() {
- final byte[] out = new byte[16];
-
- prepareOutput(out);
- NB.encodeInt32(out, 0, 0);
- assertOutput(b(0, 0, 0, 0), out, 0);
-
- prepareOutput(out);
- NB.encodeInt32(out, 3, 0);
- assertOutput(b(0, 0, 0, 0), out, 3);
-
- prepareOutput(out);
- NB.encodeInt32(out, 0, 3);
- assertOutput(b(0, 0, 0, 3), out, 0);
-
- prepareOutput(out);
- NB.encodeInt32(out, 3, 3);
- assertOutput(b(0, 0, 0, 3), out, 3);
-
- prepareOutput(out);
- NB.encodeInt32(out, 0, 0xdeac);
- assertOutput(b(0, 0, 0xde, 0xac), out, 0);
-
- prepareOutput(out);
- NB.encodeInt32(out, 3, 0xdeac);
- assertOutput(b(0, 0, 0xde, 0xac), out, 3);
-
- prepareOutput(out);
- NB.encodeInt32(out, 0, 0xdeac9853);
- assertOutput(b(0xde, 0xac, 0x98, 0x53), out, 0);
-
- prepareOutput(out);
- NB.encodeInt32(out, 3, 0xdeac9853);
- assertOutput(b(0xde, 0xac, 0x98, 0x53), out, 3);
-
- prepareOutput(out);
- NB.encodeInt32(out, 3, -1);
- assertOutput(b(0xff, 0xff, 0xff, 0xff), out, 3);
- }
-
- @Test
- public void testEncodeInt64() {
- final byte[] out = new byte[16];
-
- prepareOutput(out);
- NB.encodeInt64(out, 0, 0L);
- assertOutput(b(0, 0, 0, 0, 0, 0, 0, 0), out, 0);
-
- prepareOutput(out);
- NB.encodeInt64(out, 3, 0L);
- assertOutput(b(0, 0, 0, 0, 0, 0, 0, 0), out, 3);
-
- prepareOutput(out);
- NB.encodeInt64(out, 0, 3L);
- assertOutput(b(0, 0, 0, 0, 0, 0, 0, 3), out, 0);
-
- prepareOutput(out);
- NB.encodeInt64(out, 3, 3L);
- assertOutput(b(0, 0, 0, 0, 0, 0, 0, 3), out, 3);
-
- prepareOutput(out);
- NB.encodeInt64(out, 0, 0xdeacL);
- assertOutput(b(0, 0, 0, 0, 0, 0, 0xde, 0xac), out, 0);
-
- prepareOutput(out);
- NB.encodeInt64(out, 3, 0xdeacL);
- assertOutput(b(0, 0, 0, 0, 0, 0, 0xde, 0xac), out, 3);
-
- prepareOutput(out);
- NB.encodeInt64(out, 0, 0xdeac9853L);
- assertOutput(b(0, 0, 0, 0, 0xde, 0xac, 0x98, 0x53), out, 0);
-
- prepareOutput(out);
- NB.encodeInt64(out, 3, 0xdeac9853L);
- assertOutput(b(0, 0, 0, 0, 0xde, 0xac, 0x98, 0x53), out, 3);
-
- prepareOutput(out);
- NB.encodeInt64(out, 0, 0xac431242deac9853L);
- assertOutput(b(0xac, 0x43, 0x12, 0x42, 0xde, 0xac, 0x98, 0x53), out, 0);
-
- prepareOutput(out);
- NB.encodeInt64(out, 3, 0xac431242deac9853L);
- assertOutput(b(0xac, 0x43, 0x12, 0x42, 0xde, 0xac, 0x98, 0x53), out, 3);
-
- prepareOutput(out);
- NB.encodeInt64(out, 3, -1L);
- assertOutput(b(0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff), out, 3);
- }
-
- private static void prepareOutput(final byte[] buf) {
- for (int i = 0; i < buf.length; i++)
- buf[i] = (byte) (0x77 + i);
- }
-
- private static void assertOutput(final byte[] expect, final byte[] buf,
- final int offset) {
- for (int i = 0; i < offset; i++)
- assertEquals((byte) (0x77 + i), buf[i]);
- for (int i = 0; i < expect.length; i++)
- assertEquals(expect[i], buf[offset + i]);
- for (int i = offset + expect.length; i < buf.length; i++)
- assertEquals((byte) (0x77 + i), buf[i]);
- }
-
- private static byte[] b(final int a, final int b) {
- return new byte[] { (byte) a, (byte) b };
- }
-
- private static byte[] padb(final int len, final int a, final int b) {
- final byte[] r = new byte[len + 2];
- for (int i = 0; i < len; i++)
- r[i] = (byte) 0xaf;
- r[len] = (byte) a;
- r[len + 1] = (byte) b;
- return r;
- }
-
- private static byte[] b(final int a, final int b, final int c, final int d) {
- return new byte[] { (byte) a, (byte) b, (byte) c, (byte) d };
- }
-
- private static byte[] padb(final int len, final int a, final int b,
- final int c, final int d) {
- final byte[] r = new byte[len + 4];
- for (int i = 0; i < len; i++)
- r[i] = (byte) 0xaf;
- r[len] = (byte) a;
- r[len + 1] = (byte) b;
- r[len + 2] = (byte) c;
- r[len + 3] = (byte) d;
- return r;
- }
-
- private static byte[] b(final int a, final int b, final int c, final int d,
- final int e, final int f, final int g, final int h) {
- return new byte[] { (byte) a, (byte) b, (byte) c, (byte) d, (byte) e,
- (byte) f, (byte) g, (byte) h };
- }
-
- private static byte[] padb(final int len, final int a, final int b,
- final int c, final int d, final int e, final int f, final int g,
- final int h) {
- final byte[] r = new byte[len + 8];
- for (int i = 0; i < len; i++)
- r[i] = (byte) 0xaf;
- r[len] = (byte) a;
- r[len + 1] = (byte) b;
- r[len + 2] = (byte) c;
- r[len + 3] = (byte) d;
- r[len + 4] = (byte) e;
- r[len + 5] = (byte) f;
- r[len + 6] = (byte) g;
- r[len + 7] = (byte) h;
- return r;
- }
- }
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