Re: [Boost-users] BOOST_CHECK and functions with more than one template parameter

From: Stuart Dootson (stuart.dootson_at_[hidden])
Date: 2007-01-09 14:24:22

On 1/9/07, Rob Caldecott <robert.caldecott_at_[hidden]> wrote:
> I am trying to test a template function that takes two template parameters,
> and, because of the "comma in macros" compiler issue, I have hit a brick wall.
> For example:
>
>   template<typename T1, typename T2>
>   int func(const T1& t1, const T2& t2)
>   {
>   ...
>   }
>
>   BOOST_CHECK_EQUAL(func<std::string, int>("Test", 1234), 1234);
>
> When compiling BOOST_CHECK_EQUAL above, I get an error due to the comma between
> std::string and int.  As this is a function, I cannot use typedef, and trying to
> #define a workaround also fails (I am using VS2005).
>
> Any ideas how I can test template functions with more than one template
> parameter?
>
> Thanks in advance.

Hi, Rob - try this (i.e. brackets around the function call - should
make the preprocessor ignore the commas in the template parameter list
and the function parameter list)

BOOST_CHECK_EQUAL((func<std::string, int>("Test", 1234)), 1234);

Stuart Dootson