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      1 /*
      2  *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #include "webrtc/base/byteorder.h"
     12 
     13 #include "webrtc/base/basictypes.h"
     14 #include "webrtc/base/gunit.h"
     15 
     16 namespace rtc {
     17 
     18 // Test memory set functions put values into memory in expected order.
     19 TEST(ByteOrderTest, TestSet) {
     20   uint8 buf[8] = { 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u };
     21   Set8(buf, 0, 0xfb);
     22   Set8(buf, 1, 0x12);
     23   EXPECT_EQ(0xfb, buf[0]);
     24   EXPECT_EQ(0x12, buf[1]);
     25   SetBE16(buf, 0x1234);
     26   EXPECT_EQ(0x12, buf[0]);
     27   EXPECT_EQ(0x34, buf[1]);
     28   SetLE16(buf, 0x1234);
     29   EXPECT_EQ(0x34, buf[0]);
     30   EXPECT_EQ(0x12, buf[1]);
     31   SetBE32(buf, 0x12345678);
     32   EXPECT_EQ(0x12, buf[0]);
     33   EXPECT_EQ(0x34, buf[1]);
     34   EXPECT_EQ(0x56, buf[2]);
     35   EXPECT_EQ(0x78, buf[3]);
     36   SetLE32(buf, 0x12345678);
     37   EXPECT_EQ(0x78, buf[0]);
     38   EXPECT_EQ(0x56, buf[1]);
     39   EXPECT_EQ(0x34, buf[2]);
     40   EXPECT_EQ(0x12, buf[3]);
     41   SetBE64(buf, UINT64_C(0x0123456789abcdef));
     42   EXPECT_EQ(0x01, buf[0]);
     43   EXPECT_EQ(0x23, buf[1]);
     44   EXPECT_EQ(0x45, buf[2]);
     45   EXPECT_EQ(0x67, buf[3]);
     46   EXPECT_EQ(0x89, buf[4]);
     47   EXPECT_EQ(0xab, buf[5]);
     48   EXPECT_EQ(0xcd, buf[6]);
     49   EXPECT_EQ(0xef, buf[7]);
     50   SetLE64(buf, UINT64_C(0x0123456789abcdef));
     51   EXPECT_EQ(0xef, buf[0]);
     52   EXPECT_EQ(0xcd, buf[1]);
     53   EXPECT_EQ(0xab, buf[2]);
     54   EXPECT_EQ(0x89, buf[3]);
     55   EXPECT_EQ(0x67, buf[4]);
     56   EXPECT_EQ(0x45, buf[5]);
     57   EXPECT_EQ(0x23, buf[6]);
     58   EXPECT_EQ(0x01, buf[7]);
     59 }
     60 
     61 // Test memory get functions get values from memory in expected order.
     62 TEST(ByteOrderTest, TestGet) {
     63   uint8 buf[8];
     64   buf[0] = 0x01u;
     65   buf[1] = 0x23u;
     66   buf[2] = 0x45u;
     67   buf[3] = 0x67u;
     68   buf[4] = 0x89u;
     69   buf[5] = 0xabu;
     70   buf[6] = 0xcdu;
     71   buf[7] = 0xefu;
     72   EXPECT_EQ(0x01u, Get8(buf, 0));
     73   EXPECT_EQ(0x23u, Get8(buf, 1));
     74   EXPECT_EQ(0x0123u, GetBE16(buf));
     75   EXPECT_EQ(0x2301u, GetLE16(buf));
     76   EXPECT_EQ(0x01234567u, GetBE32(buf));
     77   EXPECT_EQ(0x67452301u, GetLE32(buf));
     78   EXPECT_EQ(UINT64_C(0x0123456789abcdef), GetBE64(buf));
     79   EXPECT_EQ(UINT64_C(0xefcdab8967452301), GetLE64(buf));
     80 }
     81 
     82 }  // namespace rtc
     83 
     84