1234         FILE* pFile = fopen(filename.c_str(), "r+");  in flipOneBitOfCache()  local
1235         ASSERT_EQ(fseek(pFile, 0, SEEK_END), 0);  in flipOneBitOfCache()
1236         long int fileSize = ftell(pFile);  in flipOneBitOfCache()
1238             fclose(pFile);  in flipOneBitOfCache()
1242         ASSERT_EQ(fseek(pFile, getRandomInt(0l, fileSize - 1), SEEK_SET), 0);  in flipOneBitOfCache()
1243         int readByte = fgetc(pFile);  in flipOneBitOfCache()
1245         ASSERT_EQ(fseek(pFile, -1, SEEK_CUR), 0);  in flipOneBitOfCache()
1246         ASSERT_NE(fputc(static_cast<uint8_t>(readByte) ^ (1U << getRandomInt(0, 7)), pFile), EOF);  in flipOneBitOfCache()
1247         fclose(pFile);  in flipOneBitOfCache()
1253         FILE* pFile = fopen(filename.c_str(), "a");  in appendBytesToCache()  local
1256             ASSERT_NE(fputc(getRandomInt<uint8_t>(0, 255), pFile), EOF);  in appendBytesToCache()
1258         fclose(pFile);  in appendBytesToCache()