1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // For this test, we pretend we're a big endian platform, even if we don't 18 // happen to be. 19 #define CHRE_NO_ENDIAN_H 1 20 #define __LITTLE_ENDIAN 0 21 #define __BIG_ENDIAN 1 22 #define __BYTE_ORDER __BIG_ENDIAN 23 24 #include <shared/nano_endian.h> 25 26 #include <cstdint> 27 #include <cstring> 28 29 #include <gtest/gtest.h> 30 #include <shared/array_length.h> 31 32 33 static constexpr uint8_t kLittleEndianRepresentation[4] = { 34 0x01, 0x02, 0x03, 0x04 }; 35 static constexpr uint8_t kBigEndianRepresentation[4] = { 36 0x04, 0x03, 0x02, 0x01 }; 37 38 TEST(EndianTest, LittleEndianToBigEndianHost) { 39 uint32_t value; 40 ::memcpy(&value, kLittleEndianRepresentation, sizeof(value)); 41 42 value = nanoapp_testing::littleEndianToHost(value); 43 EXPECT_EQ(0, ::memcmp(&value, kBigEndianRepresentation, sizeof(value))); 44 } 45 46 TEST(EndianTest, BigEndianHostToLittleEndian) { 47 uint32_t value; 48 ::memcpy(&value, kBigEndianRepresentation, sizeof(value)); 49 50 value = nanoapp_testing::hostToLittleEndian(value); 51 EXPECT_EQ(0, ::memcmp(&value, kLittleEndianRepresentation, sizeof(value))); 52 } 53
