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WriterReaderTest.cpp
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240 lines (212 loc) · 7.62 KB
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/**
* Copyright (c) 2018 HERE Europe B.V.
* See the LICENSE file in the root of this project for license details.
*/
#include <flatdata/flatdata.h>
#include "catch_amalgamated.hpp"
using namespace flatdata;
namespace
{
enum class TestEnum
{
Value_1,
Value_2
};
/**
* Use `#define GENERATE_PYTHON_READER_TESTS 1` to generate reader tests for python implementation.
* The result is output to STDOUT. Example:
* buffer = "\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00"
* assert_equal(byte_reader(buffer, 8, 3, ctypes.c_uint8), 1)
*/
#define GENERATE_PYTHON_READER_TESTS 0
#if ( GENERATE_PYTHON_READER_TESTS )
/* clang-format off */
template < typename T > struct ctypes_type { };
template <> struct ctypes_type< uint8_t > { static const char* value( ) { return "False"; } };
template <> struct ctypes_type< uint16_t > { static const char* value( ) { return "False"; } };
template <> struct ctypes_type< uint32_t > { static const char* value( ) { return "False"; } };
template <> struct ctypes_type< uint64_t > { static const char* value( ) { return "False"; } };
template <> struct ctypes_type< int8_t > { static const char* value( ) { return "True"; } };
template <> struct ctypes_type< int16_t > { static const char* value( ) { return "True"; } };
template <> struct ctypes_type< int32_t > { static const char* value( ) { return "True"; } };
template <> struct ctypes_type< int64_t > { static const char* value( ) { return "True"; } };
template <> struct ctypes_type< TestEnum > { static const char* value( ) { return "True"; } };
template < typename T > T as_numeric( T value ) { return value; }
int32_t as_numeric( TestEnum value ) { return static_cast< int32_t >( value ); }
uint16_t as_numeric( uint8_t value ) { return static_cast< uint16_t >( value ); }
/* clang-format on */
#endif // GENERATE_PYTHON_READER_TESTS
template < template < typename, int, int, int > class Reader,
typename type,
int offset,
int num_bits,
bool pre_fill_buffer >
void
test_value( type value )
{
std::array< uint8_t, sizeof( type ) + ( offset + 7 ) / 8 + 8 > buffer = { { 0 } };
if ( pre_fill_buffer )
{
for ( auto& value : buffer )
{
value = 0xff;
}
}
Writer< type, offset, num_bits, 0 > writer{ buffer.data( ) };
writer = value;
#if ( GENERATE_PYTHON_READER_TESTS )
std::cout << "_test_reader(\"";
for ( uint8_t c : buffer )
{
std::cout << "\\x" << std::hex << std::setfill( '0' ) << std::setw( 2 )
<< static_cast< uint16_t >( c );
}
std::cout << std::dec << "\""
<< ", " << offset << ", " << num_bits << ", " << ctypes_type< type >::value( ) << ", "
<< as_numeric( value ) << ")" << std::endl
<< std::endl;
#endif // GENERATE_PYTHON_READER_TESTS
Reader< type, offset, num_bits, 0 > reader{ buffer.data( ) };
type result = reader;
REQUIRE( result == value );
}
/// tests all possible num_bits
template < template < typename, int, int, int > class Reader,
typename type,
int offset,
int num_bits >
struct TestBits
{
void
operator( )( )
{
type value = 1;
#if ( !GENERATE_PYTHON_READER_TESTS )
for ( int i = 0; i < num_bits; i++ )
{
#endif // !GENERATE_PYTHON_READER_TESTS
test_value< Reader, type, offset, num_bits, false >( value );
test_value< Reader, type, offset, num_bits, true >( value );
#if ( !GENERATE_PYTHON_READER_TESTS )
value <<= 1;
}
#endif // !GENERATE_PYTHON_READER_TESTS
TestBits< Reader, type, offset, num_bits - 1 >( )( );
}
};
template < template < typename, int, int, int > class Reader, typename type, int offset >
struct TestBits< Reader, type, offset, 0 >
{
void
operator( )( )
{
}
};
template < template < typename, int, int, int > class Reader, typename type, int offset >
struct TestOffsets
{
void
operator( )( )
{
TestBits< Reader, type, offset, sizeof( type ) * 8 >( )( );
TestOffsets< Reader, type, offset - 1 >( )( );
}
};
template < template < typename, int, int, int > class Reader, typename type >
struct TestOffsets< Reader, type, 0 >
{
void
operator( )( )
{
TestBits< Reader, type, 0, sizeof( type ) * 8 >( )( );
}
};
} // namespace
TEST_CASE( "Read uint8", "[Reader]" )
{
TestOffsets< Reader, uint8_t, 8 >( )( );
}
TEST_CASE( "Read uint16", "[Reader]" )
{
TestOffsets< Reader, uint16_t, 8 >( )( );
}
TEST_CASE( "Read uint32", "[Reader]" )
{
TestOffsets< Reader, uint32_t, 8 >( )( );
}
TEST_CASE( "Read uint64", "[Reader]" )
{
TestOffsets< Reader, uint64_t, 8 >( )( );
}
TEST_CASE( "Read negative number with sign extension", "[Reader]" )
{
int32_t value = -1;
for ( int i = 0; i < 15; i++ )
{
test_value< Reader, int32_t, 3, 16, false >( value );
test_value< Reader, int32_t, 3, 16, true >( value );
value *= 2;
}
}
TEST_CASE( "Read positive signed number with sign extension", "[Reader]" )
{
int32_t value = 1;
for ( int i = 0; i < 15; i++ )
{
test_value< Reader, int32_t, 3, 16, false >( value );
test_value< Reader, int32_t, 3, 16, true >( value );
value *= 2;
}
}
TEST_CASE( "Read enum", "[Reader]" )
{
test_value< Reader, TestEnum, 3, 2, true >( TestEnum::Value_1 );
test_value< Reader, TestEnum, 3, 2, false >( TestEnum::Value_1 );
}
TEST_CASE( "Range", "[Read/Write]" )
{
std::array< uint8_t, 64 > buffer = { { 0 } };
Writer< uint32_t, 7, 7, 0 > writer_start{ buffer.data( ) };
writer_start = 16;
Writer< uint32_t, 7, 7, 0 > writer_end{ buffer.data( ) + 32 };
writer_end = 32;
Reader< std::pair< uint32_t, uint32_t >, 7, 7, 32 > reader{ buffer.data( ) };
std::pair< uint32_t, uint32_t > result = reader;
REQUIRE( result.first == 16 );
REQUIRE( result.second == 32 );
}
TEST_CASE( "Min/Max", "[Reader]" )
{
REQUIRE( Reader< uint32_t, 0, 0, 666 >::min == 0 );
REQUIRE( Reader< uint32_t, 0, 0, 666 >::max == 0 );
REQUIRE( Reader< int32_t, 0, 0, 666 >::min == 0 );
REQUIRE( Reader< int32_t, 0, 0, 666 >::max == 0 );
REQUIRE( Reader< uint32_t, 1, 1, 666 >::min == 0 );
REQUIRE( Reader< uint32_t, 1, 1, 666 >::max == 1 );
REQUIRE( Reader< int32_t, 1, 1, 666 >::min == -1 );
REQUIRE( Reader< int32_t, 1, 1, 666 >::max == 0 );
REQUIRE( Reader< uint32_t, 7, 7, 666 >::min == 0 );
REQUIRE( Reader< uint32_t, 7, 7, 666 >::max == 127 );
REQUIRE( Reader< int32_t, 7, 7, 666 >::min == -64 );
REQUIRE( Reader< int32_t, 7, 7, 666 >::max == 63 );
REQUIRE( Reader< uint32_t, 16, 16, 666 >::min == 0 );
REQUIRE( Reader< uint32_t, 16, 16, 666 >::max == 65535 );
REQUIRE( Reader< int32_t, 16, 16, 666 >::min == -32768 );
REQUIRE( Reader< int32_t, 16, 16, 666 >::max == 32767 );
REQUIRE( Reader< uint32_t, 32, 32, 666 >::min == 0 );
REQUIRE( Reader< uint32_t, 32, 32, 666 >::max == std::numeric_limits< uint32_t >::max( ) );
REQUIRE( Reader< int32_t, 32, 32, 666 >::min == std::numeric_limits< int32_t >::min( ) );
REQUIRE( Reader< int32_t, 32, 32, 666 >::max == std::numeric_limits< int32_t >::max( ) );
REQUIRE( Reader< bool, 16, 1, 666 >::min == false );
REQUIRE( Reader< bool, 16, 1, 666 >::max == true );
REQUIRE( Reader< TestEnum, 7, 7, 666 >::min == 0 );
REQUIRE( Reader< TestEnum, 7, 7, 666 >::max == 127 );
}
#if ( GENERATE_PYTHON_READER_TESTS )
TEST_CASE( "Fail if python test output is enabled", "[Reader]" )
{
// This test will fail if GENERATE_PYTHON_READER_TESTS is specified so that it cannot be
// accidentally submitted.
REQUIRE( false );
}
#endif // GENERATE_PYTHON_READER_TESTS