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Template tests: added TEMPLATE_PRODUCT_TEST_CASE

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support for generating test cases based on multiple template template
types combined with template arguments for each of the template template
types specified

e.g.
```
TEMPLATE_PRODUCT_TEST_CASE("template product","[template]",
			   (std::tuple, std::pair, std::map),
			   ((int,float),(char,double),(int,char)))
```
will effectively create 9 test cases with types:
std::tuple<int,float>
std::tuple<char,double>
std::tuple<int,char>
std::pair<int,float>
std::pair<char, double>
std::pair<int,char>
std::map<int,float>
std::map<char,double>
std::map<int,char>

Tested type is accessible in test case body as TestType
Unique name is created by appending ` - <index>` to test name
since preprocessor has some limitations in recursions

Closes #1454
This commit is contained in:
Jozef Grajciar
2018-12-06 19:27:33 +01:00
parent 4902cd7215
commit 21a1cd5683
12 changed files with 630 additions and 8 deletions
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76
include/internal/catch_meta.hpp Normal file
View File

@@ -0,0 +1,76 @@
/*
* Created by Jozef on 02/12/2018.
* Copyright 2018 Two Blue Cubes Ltd. All rights reserved.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef TWOBLUECUBES_CATCH_META_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_META_HPP_INCLUDED
template< typename... >
struct TypeList{};
template< typename... >
struct append;
template< template<typename...> class L1
, typename...E1
, template<typename...> class L2
, typename...E2
>
struct append< L1<E1...>, L2<E2...> >
{
using type = L1<E1..., E2...>;
};
template< template<typename...> class L1
, typename...E1
, template<typename...> class L2
, typename...E2
, typename...Rest
>
struct append< L1<E1...>, L2<E2...>, Rest...>
{
using type = typename append< L1<E1..., E2...>, Rest... >::type;
};
template< template<typename...> class
, typename...
>
struct rewrap;
template< template<typename...> class Container
, template<typename...> class List
, typename...elems
>
struct rewrap<Container, List<elems...>>
{
using type = TypeList< Container< elems... > >;
};
template< template<typename...> class Container
, template<typename...> class List
, class...Elems
, typename...Elements>
struct rewrap<Container, List<Elems...>, Elements...>
{
using type = typename append<TypeList<Container<Elems...>>, typename rewrap<Container, Elements...>::type>::type;
};
template< template<typename...> class...Containers >
struct combine
{
template< typename...Types >
struct with_types
{
template< template <typename...> class Final >
struct into
{
using type = typename append<Final<>, typename rewrap<Containers, Types...>::type...>::type;
};
};
};
#endif // TWOBLUECUBES_CATCH_META_HPP_INCLUDED

5
include/internal/catch_preprocessor.hpp
View File

@@ -71,4 +71,9 @@
#define INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME(Name, ...) INTERNAL_CATCH_TEMPLATE_UNIQUE_NAME1(Name, INTERNAL_CATCH_EXPAND_VARGS(INTERNAL_CATCH_REMOVE_PARENS(__VA_ARGS__)))
#endif
#define INTERNAL_CATCH_MAKE_TYPE_LIST(types) TypeList<INTERNAL_CATCH_REMOVE_PARENS(types)>
#define INTERNAL_CATCH_MAKE_TYPE_LISTS_FROM_TYPES(types)\
CATCH_REC_LIST(INTERNAL_CATCH_MAKE_TYPE_LIST,INTERNAL_CATCH_REMOVE_PARENS(types))
#endif // TWOBLUECUBES_CATCH_PREPROCESSOR_HPP_INCLUDED

68
include/internal/catch_test_registry.h
View File

@@ -14,6 +14,7 @@
#include "catch_stringref.h"
#include "catch_type_traits.hpp"
#include "catch_preprocessor.hpp"
#include "catch_meta.hpp"
namespace Catch {
@@ -150,6 +151,38 @@ struct AutoReg : NonCopyable {
return 0;\
}();
#define INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE2(TestName, TestFuncName, Name, Tags, TmplTypes, TypesList) \
CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
template<typename TestType> static void TestFuncName(); \
namespace { \
template<typename... Types> \
struct TestName { \
TestName() { \
CATCH_INTERNAL_CHECK_UNIQUE_TYPES(Types...) \
int index = 0; \
using expander = int[]; \
(void)expander{(Catch::AutoReg( Catch::makeTestInvoker( &TestFuncName<Types> ), CATCH_INTERNAL_LINEINFO, Catch::StringRef(), Catch::NameAndTags{ Name " - " + Catch::StringMaker<int>::convert(index++), Tags } ), 0)... };/* NOLINT */ \
} \
}; \
static int INTERNAL_CATCH_UNIQUE_NAME( globalRegistrar ) = [](){ \
using TestInit = combine<INTERNAL_CATCH_REMOVE_PARENS(TmplTypes)> \
::with_types<INTERNAL_CATCH_MAKE_TYPE_LISTS_FROM_TYPES(TypesList)>::into<TestName>::type; \
TestInit(); \
return 0; \
}(); \
} \
CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS \
template<typename TestType> \
static void TestFuncName()
#ifndef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
#define INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE(Name, Tags, ...)\
INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE2(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____F_U_N_C____ ),Name,Tags,__VA_ARGS__)
#else
#define INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE(Name, Tags, ...)\
INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____F_U_N_C____ ), Name, Tags, __VA_ARGS__ ) )
#endif
#define INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_2( TestNameClass, TestName, ClassName, Name, Tags, ... ) \
CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
namespace{ \
@@ -180,4 +213,39 @@ struct AutoReg : NonCopyable {
INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_TEST_CASE_METHOD_2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____C_L_A_S_S____ ), INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ) , ClassName, Name, Tags, __VA_ARGS__ ) )
#endif
#define INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE_METHOD_2(TestNameClass, TestName, ClassName, Name, Tags, TmplTypes, TypesList)\
CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
template<typename TestType> \
struct TestName : INTERNAL_CATCH_REMOVE_PARENS(ClassName <TestType>) { \
void test();\
};\
namespace {\
template<typename...Types>\
struct TestNameClass{\
TestNameClass(){\
CATCH_INTERNAL_CHECK_UNIQUE_TYPES(Types...)\
int index = 0;\
using expander = int[];\
(void)expander{(Catch::AutoReg( Catch::makeTestInvoker( &TestName<Types>::test ), CATCH_INTERNAL_LINEINFO, #ClassName, Catch::NameAndTags{ Name " - " + Catch::StringMaker<int>::convert(index++), Tags } ), 0)... };/* NOLINT */ \
}\
};\
static int INTERNAL_CATCH_UNIQUE_NAME( globalRegistrar ) = [](){\
using TestInit = combine<INTERNAL_CATCH_REMOVE_PARENS(TmplTypes)>\
::with_types<INTERNAL_CATCH_MAKE_TYPE_LISTS_FROM_TYPES(TypesList)>::into<TestNameClass>::type;\
TestInit();\
return 0;\
}(); \
}\
CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS \
template<typename TestType> \
void TestName<TestType>::test()
#ifndef CATCH_CONFIG_TRADITIONAL_MSVC_PREPROCESSOR
#define INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE_METHOD( ClassName, Name, Tags, ... )\
INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE_METHOD_2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____F_U_N_C____ ), ClassName, Name, Tags, __VA_ARGS__ )
#else
#define INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE_METHOD( ClassName, Name, Tags, ... )\
INTERNAL_CATCH_EXPAND_VARGS( INTERNAL_CATCH_TEMPLATE_PRODUCT_TEST_CASE_METHOD_2( INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____ ), INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_M_P_L_A_T_E____T_E_S_T____F_U_N_C____ ), ClassName, Name, Tags, __VA_ARGS__ ) )
#endif
#endif // TWOBLUECUBES_CATCH_TEST_REGISTRY_HPP_INCLUDED