1 /* 2 * libjingle 3 * Copyright 2012, Google, Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "talk/base/crc32.h" 29 #include "talk/base/gunit.h" 30 31 #include <string> 32 33 namespace talk_base { 34 35 TEST(Crc32Test, TestBasic) { 36 EXPECT_EQ(0U, ComputeCrc32("")); 37 EXPECT_EQ(0x352441C2U, ComputeCrc32("abc")); 38 EXPECT_EQ(0x171A3F5FU, 39 ComputeCrc32("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq")); 40 } 41 42 TEST(Crc32Test, TestMultipleUpdates) { 43 std::string input = 44 "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"; 45 uint32 c = 0; 46 for (size_t i = 0; i < input.size(); ++i) { 47 c = UpdateCrc32(c, &input[i], 1); 48 } 49 EXPECT_EQ(0x171A3F5FU, c); 50 } 51 52 } // namespace talk_base 53