config_test.cc (1703B)
1 // Copyright 2017 The Abseil Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "absl/base/config.h" 16 17 #include <cstdint> 18 19 #include "gtest/gtest.h" 20 #include "absl/synchronization/internal/thread_pool.h" 21 22 namespace { 23 24 TEST(ConfigTest, Endianness) { 25 union { 26 uint32_t value; 27 uint8_t data[sizeof(uint32_t)]; 28 } number; 29 number.data[0] = 0x00; 30 number.data[1] = 0x01; 31 number.data[2] = 0x02; 32 number.data[3] = 0x03; 33 #if defined(ABSL_IS_LITTLE_ENDIAN) && defined(ABSL_IS_BIG_ENDIAN) 34 #error Both ABSL_IS_LITTLE_ENDIAN and ABSL_IS_BIG_ENDIAN are defined 35 #elif defined(ABSL_IS_LITTLE_ENDIAN) 36 EXPECT_EQ(UINT32_C(0x03020100), number.value); 37 #elif defined(ABSL_IS_BIG_ENDIAN) 38 EXPECT_EQ(UINT32_C(0x00010203), number.value); 39 #else 40 #error Unknown endianness 41 #endif 42 } 43 44 #if defined(ABSL_HAVE_THREAD_LOCAL) 45 TEST(ConfigTest, ThreadLocal) { 46 static thread_local int mine_mine_mine = 16; 47 EXPECT_EQ(16, mine_mine_mine); 48 { 49 absl::synchronization_internal::ThreadPool pool(1); 50 pool.Schedule([&] { 51 EXPECT_EQ(16, mine_mine_mine); 52 mine_mine_mine = 32; 53 EXPECT_EQ(32, mine_mine_mine); 54 }); 55 } 56 EXPECT_EQ(16, mine_mine_mine); 57 } 58 #endif 59 60 } // namespace