michael@0: // Copyright (c) 2010 Google Inc.
michael@0: // All rights reserved.
michael@0: //
michael@0: // Redistribution and use in source and binary forms, with or without
michael@0: // modification, are permitted provided that the following conditions are
michael@0: // met:
michael@0: //
michael@0: //     * Redistributions of source code must retain the above copyright
michael@0: // notice, this list of conditions and the following disclaimer.
michael@0: //     * Redistributions in binary form must reproduce the above
michael@0: // copyright notice, this list of conditions and the following disclaimer
michael@0: // in the documentation and/or other materials provided with the
michael@0: // distribution.
michael@0: //     * Neither the name of Google Inc. nor the names of its
michael@0: // contributors may be used to endorse or promote products derived from
michael@0: // this software without specific prior written permission.
michael@0: //
michael@0: // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0: // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0: // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0: // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
michael@0: // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
michael@0: // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
michael@0: // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
michael@0: // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
michael@0: // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0: // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
michael@0: // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0: 
michael@0: // Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
michael@0: 
michael@0: // byte_cursor_unittest.cc: Unit tests for google_breakpad::ByteBuffer
michael@0: // and google_breakpad::ByteCursor.
michael@0: 
michael@0: #include <string>
michael@0: 
michael@0: #include <string.h>
michael@0: 
michael@0: #include "breakpad_googletest_includes.h"
michael@0: #include "common/byte_cursor.h"
michael@0: #include "common/using_std_string.h"
michael@0: 
michael@0: using google_breakpad::ByteBuffer;
michael@0: using google_breakpad::ByteCursor;
michael@0: 
michael@0: TEST(Buffer, SizeOfNothing) {
michael@0:   uint8_t data[1];
michael@0:   ByteBuffer buffer(data, 0);
michael@0:   EXPECT_EQ(0U, buffer.Size());
michael@0: }
michael@0: 
michael@0: TEST(Buffer, SizeOfSomething) {
michael@0:   uint8_t data[10];
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   EXPECT_EQ(10U, buffer.Size());
michael@0: }
michael@0: 
michael@0: TEST(Extent, AvailableEmpty) {
michael@0:   uint8_t data[1];
michael@0:   ByteBuffer buffer(data, 0);
michael@0:   ByteCursor cursor(&buffer);
michael@0:   EXPECT_EQ(0U, cursor.Available());
michael@0: }
michael@0: 
michael@0: TEST(Extent, AtEndEmpty) {
michael@0:   uint8_t data[1];
michael@0:   ByteBuffer buffer(data, 0);
michael@0:   ByteCursor cursor(&buffer);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0: }
michael@0: 
michael@0: TEST(Extent, AsBoolEmpty) {
michael@0:   uint8_t data[1];
michael@0:   ByteBuffer buffer(data, 0);
michael@0:   ByteCursor cursor(&buffer);
michael@0:   EXPECT_TRUE(cursor);
michael@0: }
michael@0: 
michael@0: TEST(Extent, AvailableSome) {
michael@0:   uint8_t data[10];
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   EXPECT_EQ(10U, cursor.Available());
michael@0: }
michael@0: 
michael@0: TEST(Extent, AtEndSome) {
michael@0:   uint8_t data[10];
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   EXPECT_FALSE(cursor.AtEnd());
michael@0:   EXPECT_TRUE(cursor.Skip(sizeof(data)).AtEnd());
michael@0: }
michael@0: 
michael@0: TEST(Extent, AsBoolSome) {
michael@0:   uint8_t data[10];
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   EXPECT_TRUE(cursor);
michael@0:   EXPECT_TRUE(cursor.Skip(sizeof(data)));
michael@0:   EXPECT_FALSE(cursor.Skip(1));
michael@0: }
michael@0: 
michael@0: TEST(Extent, Cursor) {
michael@0:   uint8_t data[] = { 0xf7,
michael@0:                      0x9f, 0xbe,
michael@0:                      0x67, 0xfb, 0xd3, 0x58,
michael@0:                      0x6f, 0x36, 0xde, 0xd1,
michael@0:                      0x2a, 0x2a, 0x2a };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0: 
michael@0:   uint8_t a;
michael@0:   uint16_t b;
michael@0:   uint32_t c;
michael@0:   uint32_t d;
michael@0:   uint8_t stars[3];
michael@0: 
michael@0:   EXPECT_EQ(data + 0U, cursor.here());
michael@0: 
michael@0:   EXPECT_TRUE(cursor >> a);
michael@0:   EXPECT_EQ(data + 1U, cursor.here());
michael@0: 
michael@0:   EXPECT_TRUE(cursor >> b);
michael@0:   EXPECT_EQ(data + 3U, cursor.here());
michael@0: 
michael@0:   EXPECT_TRUE(cursor >> c);
michael@0:   EXPECT_EQ(data + 7U, cursor.here());
michael@0: 
michael@0:   EXPECT_TRUE(cursor.Skip(4));
michael@0:   EXPECT_EQ(data + 11U, cursor.here());
michael@0: 
michael@0:   EXPECT_TRUE(cursor.Read(stars, 3));
michael@0:   EXPECT_EQ(data + 14U, cursor.here());
michael@0: 
michael@0:   EXPECT_FALSE(cursor >> d);
michael@0:   EXPECT_EQ(data + 14U, cursor.here());
michael@0: }
michael@0: 
michael@0: TEST(Extent, SetOffset) {
michael@0:   uint8_t data[] = { 0x5c, 0x79, 0x8c, 0xd5 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0: 
michael@0:   uint8_t a, b, c, d, e;
michael@0:   EXPECT_TRUE(cursor >> a);
michael@0:   EXPECT_EQ(0x5cU, a);
michael@0:   EXPECT_EQ(data + 1U, cursor.here());
michael@0:   EXPECT_TRUE(((cursor >> b).set_here(data + 3) >> c).set_here(data + 1)
michael@0:               >> d >> e);
michael@0:   EXPECT_EQ(0x79U, b);
michael@0:   EXPECT_EQ(0xd5U, c);
michael@0:   EXPECT_EQ(0x79U, d);
michael@0:   EXPECT_EQ(0x8cU, e);
michael@0:   EXPECT_EQ(data + 3U, cursor.here());
michael@0: }
michael@0: 
michael@0: TEST(BigEndian, Signed1) {
michael@0:   uint8_t data[] = { 0x00, 0x7f, 0x80, 0xff };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   cursor.set_big_endian(true);
michael@0:   int a, b, c, d, e;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(1, true, &a)
michael@0:               .Read(1, true, &b)
michael@0:               .Read(1, true, &c)
michael@0:               .Read(1, true, &d));
michael@0:   EXPECT_EQ(0,     a);
michael@0:   EXPECT_EQ(0x7f,  b);
michael@0:   EXPECT_EQ(-0x80, c);
michael@0:   EXPECT_EQ(-1,    d);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(1, true, &e));
michael@0: }
michael@0: 
michael@0: TEST(BigEndian, Signed2) {
michael@0:   uint8_t data[] = { 0x00, 0x00,   0x00, 0x80,   0x7f, 0xff,
michael@0:                      0x80, 0x00,   0x80, 0x80,   0xff, 0xff,
michael@0:                      0x39, 0xf1,   0x8a, 0xbc,   0x5a, 0xec };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer, true);
michael@0:   int a, b, c, d, e, f, g, h, i, j;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(2, true, &a)
michael@0:               .Read(2, true, &b)
michael@0:               .Read(2, true, &c)
michael@0:               .Read(2, true, &d)
michael@0:               .Read(2, true, &e)
michael@0:               .Read(2, true, &f)
michael@0:               .Read(2, true, &g)
michael@0:               .Read(2, true, &h)
michael@0:               .Read(2, true, &i));
michael@0:   EXPECT_EQ(0,       a);
michael@0:   EXPECT_EQ(0x80,    b);
michael@0:   EXPECT_EQ(0x7fff,  c);
michael@0:   EXPECT_EQ(-0x8000, d);
michael@0:   EXPECT_EQ(-0x7f80, e);
michael@0:   EXPECT_EQ(-1,      f);
michael@0:   EXPECT_EQ(0x39f1,  g);
michael@0:   EXPECT_EQ(-0x7544, h);
michael@0:   EXPECT_EQ(0x5aec,  i);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(2, true, &j));
michael@0: }
michael@0: 
michael@0: TEST(BigEndian, Signed4) {
michael@0:   uint8_t data[] = { 0x00, 0x00, 0x00, 0x00,
michael@0:                      0x7f, 0xff, 0xff, 0xff,
michael@0:                      0x80, 0x00, 0x00, 0x00,
michael@0:                      0xff, 0xff, 0xff, 0xff,
michael@0:                      0xb6, 0xb1, 0xff, 0xef,
michael@0:                      0x19, 0x6a, 0xca, 0x46 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   cursor.set_big_endian(true);
michael@0:   int64_t a, b, c, d, e, f, g;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(4, true, &a)
michael@0:               .Read(4, true, &b)
michael@0:               .Read(4, true, &c)
michael@0:               .Read(4, true, &d)
michael@0:               .Read(4, true, &e)
michael@0:               .Read(4, true, &f));
michael@0:   EXPECT_EQ(0,                    a);
michael@0:   EXPECT_EQ(0x7fffffff,           b);
michael@0:   EXPECT_EQ(-0x80000000LL,        c);
michael@0:   EXPECT_EQ(-1,                   d);
michael@0:   EXPECT_EQ((int32_t) 0xb6b1ffef, e);
michael@0:   EXPECT_EQ(0x196aca46,           f);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(4, true, &g));
michael@0: }
michael@0: 
michael@0: TEST(BigEndian, Signed8) {
michael@0:   uint8_t data[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
michael@0:                      0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
michael@0:                      0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
michael@0:                      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
michael@0:                      0x93, 0x20, 0xd5, 0xe9, 0xd2, 0xd5, 0x87, 0x9c,
michael@0:                      0x4e, 0x42, 0x49, 0xd2, 0x7f, 0x84, 0x14, 0xa4 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer, true);
michael@0:   int64_t a, b, c, d, e, f, g;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(8, true, &a)
michael@0:               .Read(8, true, &b)
michael@0:               .Read(8, true, &c)
michael@0:               .Read(8, true, &d)
michael@0:               .Read(8, true, &e)
michael@0:               .Read(8, true, &f));
michael@0:   EXPECT_EQ(0,                               a);
michael@0:   EXPECT_EQ(0x7fffffffffffffffLL,            b);
michael@0:   EXPECT_EQ(-0x7fffffffffffffffLL - 1,       c);
michael@0:   EXPECT_EQ(-1,                              d);
michael@0:   EXPECT_EQ((int64_t) 0x9320d5e9d2d5879cULL, e);
michael@0:   EXPECT_EQ(0x4e4249d27f8414a4LL,            f);  
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(8, true, &g));
michael@0: }
michael@0: 
michael@0: TEST(BigEndian, Unsigned1) {
michael@0:   uint8_t data[] = { 0x00, 0x7f, 0x80, 0xff };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   cursor.set_big_endian(true);
michael@0:   int32_t a, b, c, d, e;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(1, false, &a)
michael@0:               .Read(1, false, &b)
michael@0:               .Read(1, false, &c)
michael@0:               .Read(1, false, &d));
michael@0:   EXPECT_EQ(0,    a);
michael@0:   EXPECT_EQ(0x7f, b);
michael@0:   EXPECT_EQ(0x80, c);
michael@0:   EXPECT_EQ(0xff, d);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(1, false, &e));
michael@0: }
michael@0: 
michael@0: TEST(BigEndian, Unsigned2) {
michael@0:   uint8_t data[] = { 0x00, 0x00,   0x00, 0x80,   0x7f, 0xff,
michael@0:                      0x80, 0x00,   0x80, 0x80,   0xff, 0xff,
michael@0:                      0x39, 0xf1,   0x8a, 0xbc,   0x5a, 0xec };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer, true);
michael@0:   int64_t a, b, c, d, e, f, g, h, i, j;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(2, false, &a)
michael@0:               .Read(2, false, &b)
michael@0:               .Read(2, false, &c)
michael@0:               .Read(2, false, &d)
michael@0:               .Read(2, false, &e)
michael@0:               .Read(2, false, &f)
michael@0:               .Read(2, false, &g)
michael@0:               .Read(2, false, &h)
michael@0:               .Read(2, false, &i));
michael@0:   EXPECT_EQ(0,      a);
michael@0:   EXPECT_EQ(0x80,   b);
michael@0:   EXPECT_EQ(0x7fff, c);
michael@0:   EXPECT_EQ(0x8000, d);
michael@0:   EXPECT_EQ(0x8080, e);
michael@0:   EXPECT_EQ(0xffff, f);
michael@0:   EXPECT_EQ(0x39f1, g);
michael@0:   EXPECT_EQ(0x8abc, h);
michael@0:   EXPECT_EQ(0x5aec, i);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(2, false, &j));
michael@0: }
michael@0: 
michael@0: TEST(BigEndian, Unsigned4) {
michael@0:   uint8_t data[] = { 0x00, 0x00, 0x00, 0x00,
michael@0:                      0x7f, 0xff, 0xff, 0xff,
michael@0:                      0x80, 0x00, 0x00, 0x00,
michael@0:                      0xff, 0xff, 0xff, 0xff,
michael@0:                      0xb6, 0xb1, 0xff, 0xef,
michael@0:                      0x19, 0x6a, 0xca, 0x46 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   cursor.set_big_endian(true);
michael@0:   int64_t a, b, c, d, e, f, g;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(4, false, &a)
michael@0:               .Read(4, false, &b)
michael@0:               .Read(4, false, &c)
michael@0:               .Read(4, false, &d)
michael@0:               .Read(4, false, &e)
michael@0:               .Read(4, false, &f));
michael@0:   EXPECT_EQ(0,          a);
michael@0:   EXPECT_EQ(0x7fffffff, b);
michael@0:   EXPECT_EQ(0x80000000, c);
michael@0:   EXPECT_EQ(0xffffffff, d);
michael@0:   EXPECT_EQ(0xb6b1ffef, e);
michael@0:   EXPECT_EQ(0x196aca46, f);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(4, false, &g));
michael@0: }
michael@0: 
michael@0: TEST(BigEndian, Unsigned8) {
michael@0:   uint8_t data[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
michael@0:                      0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
michael@0:                      0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
michael@0:                      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
michael@0:                      0x93, 0x20, 0xd5, 0xe9, 0xd2, 0xd5, 0x87, 0x9c,
michael@0:                      0x4e, 0x42, 0x49, 0xd2, 0x7f, 0x84, 0x14, 0xa4 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer, true);
michael@0:   uint64_t a, b, c, d, e, f, g;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(8, false, &a)
michael@0:               .Read(8, false, &b)
michael@0:               .Read(8, false, &c)
michael@0:               .Read(8, false, &d)
michael@0:               .Read(8, false, &e)
michael@0:               .Read(8, false, &f));
michael@0:   EXPECT_EQ(0U,                    a);
michael@0:   EXPECT_EQ(0x7fffffffffffffffULL, b);
michael@0:   EXPECT_EQ(0x8000000000000000ULL, c);
michael@0:   EXPECT_EQ(0xffffffffffffffffULL, d);
michael@0:   EXPECT_EQ(0x9320d5e9d2d5879cULL, e);
michael@0:   EXPECT_EQ(0x4e4249d27f8414a4ULL, f);  
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(8, false, &g));
michael@0: }
michael@0: 
michael@0: TEST(LittleEndian, Signed1) {
michael@0:   uint8_t data[] = { 0x00, 0x7f, 0x80, 0xff };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   int32_t a, b, c, d, e;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(1, true, &a)
michael@0:               .Read(1, true, &b)
michael@0:               .Read(1, true, &c)
michael@0:               .Read(1, true, &d));
michael@0:   EXPECT_EQ(0,     a);
michael@0:   EXPECT_EQ(0x7f,  b);
michael@0:   EXPECT_EQ(-0x80, c);
michael@0:   EXPECT_EQ(-1,    d);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(1, true, &e));
michael@0: }
michael@0: 
michael@0: TEST(LittleEndian, Signed2) {
michael@0:   uint8_t data[] = { 0x00, 0x00,   0x80, 0x00,   0xff, 0x7f,
michael@0:                      0x00, 0x80,   0x80, 0x80,   0xff, 0xff,
michael@0:                      0xf1, 0x39,   0xbc, 0x8a,   0xec, 0x5a };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer, false);
michael@0:   int32_t a, b, c, d, e, f, g, h, i, j;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(2, true, &a)
michael@0:               .Read(2, true, &b)
michael@0:               .Read(2, true, &c)
michael@0:               .Read(2, true, &d)
michael@0:               .Read(2, true, &e)
michael@0:               .Read(2, true, &f)
michael@0:               .Read(2, true, &g)
michael@0:               .Read(2, true, &h)
michael@0:               .Read(2, true, &i));
michael@0:   EXPECT_EQ(0,       a);
michael@0:   EXPECT_EQ(0x80,    b);
michael@0:   EXPECT_EQ(0x7fff,  c);
michael@0:   EXPECT_EQ(-0x8000, d);
michael@0:   EXPECT_EQ(-0x7f80, e);
michael@0:   EXPECT_EQ(-1,      f);
michael@0:   EXPECT_EQ(0x39f1,  g);
michael@0:   EXPECT_EQ(-0x7544, h);
michael@0:   EXPECT_EQ(0x5aec,  i);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(2, true, &j));
michael@0: }
michael@0: 
michael@0: TEST(LittleEndian, Signed4) {
michael@0:   uint8_t data[] = { 0x00, 0x00, 0x00, 0x00,
michael@0:                      0xff, 0xff, 0xff, 0x7f,
michael@0:                      0x00, 0x00, 0x00, 0x80,
michael@0:                      0xff, 0xff, 0xff, 0xff,
michael@0:                      0xef, 0xff, 0xb1, 0xb6, 
michael@0:                      0x46, 0xca, 0x6a, 0x19 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   int64_t a, b, c, d, e, f, g;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(4, true, &a)
michael@0:               .Read(4, true, &b)
michael@0:               .Read(4, true, &c)
michael@0:               .Read(4, true, &d)
michael@0:               .Read(4, true, &e)
michael@0:               .Read(4, true, &f));
michael@0:   EXPECT_EQ(0,                    a);
michael@0:   EXPECT_EQ(0x7fffffff,           b);
michael@0:   EXPECT_EQ(-0x80000000LL,        c);
michael@0:   EXPECT_EQ(-1,                   d);
michael@0:   EXPECT_EQ((int32_t) 0xb6b1ffef, e);
michael@0:   EXPECT_EQ(0x196aca46,           f);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(4, true, &g));
michael@0: }
michael@0: 
michael@0: TEST(LittleEndian, Signed8) {
michael@0:   uint8_t data[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
michael@0:                      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f,
michael@0:                      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
michael@0:                      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
michael@0:                      0x9c, 0x87, 0xd5, 0xd2, 0xe9, 0xd5, 0x20, 0x93,
michael@0:                      0xa4, 0x14, 0x84, 0x7f, 0xd2, 0x49, 0x42, 0x4e };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer, false);
michael@0:   int64_t a, b, c, d, e, f, g;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(8, true, &a)
michael@0:               .Read(8, true, &b)
michael@0:               .Read(8, true, &c)
michael@0:               .Read(8, true, &d)
michael@0:               .Read(8, true, &e)
michael@0:               .Read(8, true, &f));
michael@0:   EXPECT_EQ(0,                               a);
michael@0:   EXPECT_EQ(0x7fffffffffffffffLL,            b);
michael@0:   EXPECT_EQ(-0x7fffffffffffffffLL - 1,       c);
michael@0:   EXPECT_EQ(-1,                              d);
michael@0:   EXPECT_EQ((int64_t) 0x9320d5e9d2d5879cULL, e);
michael@0:   EXPECT_EQ(0x4e4249d27f8414a4LL,            f);  
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(8, true, &g));
michael@0: }
michael@0: 
michael@0: TEST(LittleEndian, Unsigned1) {
michael@0:   uint8_t data[] = { 0x00, 0x7f, 0x80, 0xff };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   int32_t a, b, c, d, e;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(1, false, &a)
michael@0:               .Read(1, false, &b)
michael@0:               .Read(1, false, &c)
michael@0:               .Read(1, false, &d));
michael@0:   EXPECT_EQ(0,    a);
michael@0:   EXPECT_EQ(0x7f, b);
michael@0:   EXPECT_EQ(0x80, c);
michael@0:   EXPECT_EQ(0xff, d);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(1, false, &e));
michael@0: }
michael@0: 
michael@0: TEST(LittleEndian, Unsigned2) {
michael@0:   uint8_t data[] = { 0x00, 0x00,   0x80, 0x00,   0xff, 0x7f,
michael@0:                      0x00, 0x80,   0x80, 0x80,   0xff, 0xff,
michael@0:                      0xf1, 0x39,   0xbc, 0x8a,   0xec, 0x5a };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   int32_t a, b, c, d, e, f, g, h, i, j;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(2, false, &a)
michael@0:               .Read(2, false, &b)
michael@0:               .Read(2, false, &c)
michael@0:               .Read(2, false, &d)
michael@0:               .Read(2, false, &e)
michael@0:               .Read(2, false, &f)
michael@0:               .Read(2, false, &g)
michael@0:               .Read(2, false, &h)
michael@0:               .Read(2, false, &i));
michael@0:   EXPECT_EQ(0,      a);
michael@0:   EXPECT_EQ(0x80,   b);
michael@0:   EXPECT_EQ(0x7fff, c);
michael@0:   EXPECT_EQ(0x8000, d);
michael@0:   EXPECT_EQ(0x8080, e);
michael@0:   EXPECT_EQ(0xffff, f);
michael@0:   EXPECT_EQ(0x39f1, g);
michael@0:   EXPECT_EQ(0x8abc, h);
michael@0:   EXPECT_EQ(0x5aec, i);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(2, false, &j));
michael@0: }
michael@0: 
michael@0: TEST(LittleEndian, Unsigned4) {
michael@0:   uint8_t data[] = { 0x00, 0x00, 0x00, 0x00,
michael@0:                      0xff, 0xff, 0xff, 0x7f,
michael@0:                      0x00, 0x00, 0x00, 0x80,
michael@0:                      0xff, 0xff, 0xff, 0xff,
michael@0:                      0xef, 0xff, 0xb1, 0xb6,
michael@0:                      0x46, 0xca, 0x6a, 0x19 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   int64_t a, b, c, d, e, f, g;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(4, false, &a)
michael@0:               .Read(4, false, &b)
michael@0:               .Read(4, false, &c)
michael@0:               .Read(4, false, &d)
michael@0:               .Read(4, false, &e)
michael@0:               .Read(4, false, &f));
michael@0:   EXPECT_EQ(0,          a);
michael@0:   EXPECT_EQ(0x7fffffff, b);
michael@0:   EXPECT_EQ(0x80000000, c);
michael@0:   EXPECT_EQ(0xffffffff, d);
michael@0:   EXPECT_EQ(0xb6b1ffef, e);
michael@0:   EXPECT_EQ(0x196aca46, f);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(4, false, &g));
michael@0: }
michael@0: 
michael@0: TEST(LittleEndian, Unsigned8) {
michael@0:   uint8_t data[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
michael@0:                      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f,
michael@0:                      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
michael@0:                      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
michael@0:                      0x9c, 0x87, 0xd5, 0xd2, 0xe9, 0xd5, 0x20, 0x93,
michael@0:                      0xa4, 0x14, 0x84, 0x7f, 0xd2, 0x49, 0x42, 0x4e };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   uint64_t a, b, c, d, e, f, g;
michael@0:   ASSERT_TRUE(cursor
michael@0:               .Read(8, false, &a)
michael@0:               .Read(8, false, &b)
michael@0:               .Read(8, false, &c)
michael@0:               .Read(8, false, &d)
michael@0:               .Read(8, false, &e)
michael@0:               .Read(8, false, &f));
michael@0:   EXPECT_EQ(0U,                    a);
michael@0:   EXPECT_EQ(0x7fffffffffffffffULL, b);
michael@0:   EXPECT_EQ(0x8000000000000000ULL, c);
michael@0:   EXPECT_EQ(0xffffffffffffffffULL, d);
michael@0:   EXPECT_EQ(0x9320d5e9d2d5879cULL, e);
michael@0:   EXPECT_EQ(0x4e4249d27f8414a4ULL, f);  
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor.Read(8, false, &g));
michael@0: }
michael@0: 
michael@0: TEST(Extractor, Signed1) {
michael@0:   uint8_t data[] = { 0xfd };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   int8_t a;
michael@0:   EXPECT_TRUE(cursor >> a);
michael@0:   EXPECT_EQ(-3, a);
michael@0:   EXPECT_FALSE(cursor >> a);
michael@0: }
michael@0: 
michael@0: TEST(Extractor, Signed2) {
michael@0:   uint8_t data[] = { 0x13, 0xcd };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   int16_t a;
michael@0:   EXPECT_TRUE(cursor >> a);
michael@0:   EXPECT_EQ(-13037, a);
michael@0:   EXPECT_FALSE(cursor >> a);
michael@0: }
michael@0: 
michael@0: TEST(Extractor, Signed4) {
michael@0:   uint8_t data[] = { 0xd2, 0xe4, 0x53, 0xe9 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   int32_t a;
michael@0:   // For some reason, G++ 4.4.1 complains:
michael@0:   //   warning: array subscript is above array bounds
michael@0:   // in ByteCursor::Read(size_t, bool, T *) as it inlines this call, but
michael@0:   // I'm not able to see how such a reference would occur.
michael@0:   EXPECT_TRUE(cursor >> a);
michael@0:   EXPECT_EQ(-380377902, a);
michael@0:   EXPECT_FALSE(cursor >> a);
michael@0: }
michael@0: 
michael@0: TEST(Extractor, Unsigned1) {
michael@0:   uint8_t data[] = { 0xfd };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   uint8_t a;
michael@0:   EXPECT_TRUE(cursor >> a);
michael@0:   EXPECT_EQ(0xfd, a);
michael@0:   EXPECT_FALSE(cursor >> a);
michael@0: }
michael@0: 
michael@0: TEST(Extractor, Unsigned2) {
michael@0:   uint8_t data[] = { 0x13, 0xcd };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   uint16_t a;
michael@0:   EXPECT_TRUE(cursor >> a);
michael@0:   EXPECT_EQ(0xcd13, a);
michael@0:   EXPECT_FALSE(cursor >> a);
michael@0: }
michael@0: 
michael@0: TEST(Extractor, Unsigned4) {
michael@0:   uint8_t data[] = { 0xd2, 0xe4, 0x53, 0xe9 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   uint32_t a;
michael@0:   // For some reason, G++ 4.4.1 complains:
michael@0:   //   warning: array subscript is above array bounds
michael@0:   // in ByteCursor::Read(size_t, bool, T *) as it inlines this call, but
michael@0:   // I'm not able to see how such a reference would occur.
michael@0:   EXPECT_TRUE(cursor >> a);
michael@0:   EXPECT_EQ(0xe953e4d2, a);
michael@0:   EXPECT_FALSE(cursor >> a);
michael@0:   EXPECT_FALSE(cursor >> a);
michael@0: }
michael@0: 
michael@0: TEST(Extractor, Mixed) {
michael@0:   uint8_t data[] = { 0x42,
michael@0:                      0x25, 0x0b,
michael@0:                      0x3d, 0x25, 0xed, 0x2a,
michael@0:                      0xec, 0x16, 0x9e, 0x14, 0x61, 0x5b, 0x2c, 0xcf,
michael@0:                      0xd8,
michael@0:                      0x22, 0xa5,
michael@0:                      0x3a, 0x02, 0x6a, 0xd7,
michael@0:                      0x93, 0x2a, 0x2d, 0x8d, 0xb4, 0x95, 0xe0, 0xc6 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0:   cursor.set_big_endian(true);
michael@0: 
michael@0:   uint8_t a;
michael@0:   uint16_t b;
michael@0:   uint32_t c;
michael@0:   uint64_t d;
michael@0:   int8_t e;
michael@0:   int16_t f;
michael@0:   int32_t g;
michael@0:   int64_t h;
michael@0:   int z;
michael@0:   EXPECT_FALSE(cursor.AtEnd());
michael@0:   EXPECT_TRUE(cursor >> a >> b >> c >> d >> e >> f >> g >> h);
michael@0:   EXPECT_EQ(0x42U, a);
michael@0:   EXPECT_EQ(0x250bU, b);
michael@0:   EXPECT_EQ(0x3d25ed2aU, c);
michael@0:   EXPECT_EQ(0xec169e14615b2ccfULL, d);
michael@0:   EXPECT_EQ(-40, e);
michael@0:   EXPECT_EQ(0x22a5, f);
michael@0:   EXPECT_EQ(0x3a026ad7, g);
michael@0:   EXPECT_EQ(-7842405714468937530LL, h);
michael@0: 
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0:   EXPECT_FALSE(cursor >> z);
michael@0: }
michael@0: 
michael@0: TEST(Strings, Zero) {
michael@0:   uint8_t data[] = { 0xa6 };
michael@0:   ByteBuffer buffer(data, 0);
michael@0:   ByteCursor cursor(&buffer);
michael@0: 
michael@0:   uint8_t received[1];
michael@0:   received[0] = 0xc2;
michael@0:   EXPECT_TRUE(cursor.Read(received, 0));
michael@0:   EXPECT_EQ(0xc2U, received[0]);
michael@0: }
michael@0: 
michael@0: TEST(Strings, Some) {
michael@0:   uint8_t data[] = { 0x5d, 0x31, 0x09, 0xa6, 0x2e, 0x2c, 0x83, 0xbb };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0: 
michael@0:   uint8_t received[7] = { 0xa7, 0xf7, 0x43, 0x0c, 0x27, 0xea, 0xed };
michael@0:   EXPECT_TRUE(cursor.Skip(2).Read(received, 5));
michael@0:   uint8_t expected[7] = { 0x09, 0xa6, 0x2e, 0x2c, 0x83, 0xea, 0xed };
michael@0:   EXPECT_TRUE(memcmp(received, expected, 7) == 0);
michael@0: }
michael@0: 
michael@0: TEST(Strings, TooMuch) {
michael@0:   uint8_t data[] = { 0x5d, 0x31, 0x09, 0xa6, 0x2e, 0x2c, 0x83, 0xbb };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0: 
michael@0:   uint8_t received1[3];
michael@0:   uint8_t received2[3];
michael@0:   uint8_t received3[3];
michael@0:   EXPECT_FALSE(cursor
michael@0:                .Read(received1, 3)
michael@0:                .Read(received2, 3)
michael@0:                .Read(received3, 3));
michael@0:   uint8_t expected1[3] = { 0x5d, 0x31, 0x09 };
michael@0:   uint8_t expected2[3] = { 0xa6, 0x2e, 0x2c };
michael@0: 
michael@0:   EXPECT_TRUE(memcmp(received1, expected1, 3) == 0);
michael@0:   EXPECT_TRUE(memcmp(received2, expected2, 3) == 0);
michael@0: }
michael@0: 
michael@0: TEST(Strings, PointTo) {
michael@0:   uint8_t data[] = { 0x83, 0x80, 0xb4, 0x38, 0x00, 0x2c, 0x0a, 0x27 };
michael@0:   ByteBuffer buffer(data, sizeof(data));
michael@0:   ByteCursor cursor(&buffer);
michael@0: 
michael@0:   const uint8_t *received1;
michael@0:   const uint8_t *received2;
michael@0:   const uint8_t *received3;
michael@0:   const uint8_t *received4;
michael@0:   EXPECT_FALSE(cursor
michael@0:                .PointTo(&received1, 3)
michael@0:                .PointTo(&received2, 3)
michael@0:                .PointTo(&received3)
michael@0:                .PointTo(&received4, 3));
michael@0:   EXPECT_EQ(data + 0, received1);
michael@0:   EXPECT_EQ(data + 3, received2);
michael@0:   EXPECT_EQ(data + 6, received3);
michael@0:   EXPECT_EQ(NULL, received4);
michael@0: }
michael@0: 
michael@0: TEST(Strings, CString) {
michael@0:   uint8_t data[] = "abc\0\0foo";
michael@0:   ByteBuffer buffer(data, sizeof(data) - 1);  // don't include terminating '\0'
michael@0:   ByteCursor cursor(&buffer);
michael@0: 
michael@0:   string a, b, c;
michael@0:   EXPECT_TRUE(cursor.CString(&a).CString(&b));
michael@0:   EXPECT_EQ("abc", a);
michael@0:   EXPECT_EQ("", b);
michael@0:   EXPECT_FALSE(cursor.CString(&c));
michael@0:   EXPECT_EQ("", c);
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0: }
michael@0: 
michael@0: TEST(Strings, CStringLimit) {
michael@0:   uint8_t data[] = "abcdef\0\0foobar";
michael@0:   ByteBuffer buffer(data, sizeof(data) - 1);  // don't include terminating '\0'
michael@0:   ByteCursor cursor(&buffer);
michael@0: 
michael@0:   string a, b, c, d, e;
michael@0: 
michael@0:   EXPECT_TRUE(cursor.CString(&a, 3));
michael@0:   EXPECT_EQ("abc", a);
michael@0: 
michael@0:   EXPECT_TRUE(cursor.CString(&b, 0));
michael@0:   EXPECT_EQ("", b);
michael@0: 
michael@0:   EXPECT_TRUE(cursor.CString(&c, 6));
michael@0:   EXPECT_EQ("def", c);
michael@0: 
michael@0:   EXPECT_TRUE(cursor.CString(&d, 4));
michael@0:   EXPECT_EQ("ooba", d);
michael@0: 
michael@0:   EXPECT_FALSE(cursor.CString(&e, 4));
michael@0:   EXPECT_EQ("", e);
michael@0: 
michael@0:   EXPECT_TRUE(cursor.AtEnd());
michael@0: }
michael@0: 
michael@0: //  uint8_t data[] = { 0xa6, 0x54, 0xdf, 0x67, 0x51, 0x43, 0xac, 0xf1 };
michael@0: //  ByteBuffer buffer(data, sizeof(data));