Fix TEST_CASE_CLASS

[Saalvage]

Fixes #608

TODO:

• Add docs

[codecov]

Codecov Report

Merging #702 (b280c5c) into dev (96273fd) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #702   +/-   ##
=======================================
  Coverage   92.19%   92.19%           
=======================================
  Files           2        2           
  Lines        2127     2127           
=======================================
  Hits         1961     1961           
  Misses        166      166           

Impacted Files	Coverage Δ
doctest/parts/doctest_fwd.h	97.70% <ø> (ø)

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[avoirtech]

Hi @Saalvage - I was trying out this branch (at b280c5c) and it fixes the compile problem for me - thanks.

However, noticed that some of my TEST_CASE_CLASS cases were not being run. With the following two minimal examples in the same .h file, the first runs (failing as expected), the second does not run at all:

class NonTemplated {
    int foo;
public:
    TEST_CASE_CLASS("NonTemplatedRuns") {
        NonTemplated x;
        x.foo = 3;
        CHECK(x.foo == 10);
    }
};


template<typename T>
class Templated {
    T foo;
public:
    TEST_CASE_CLASS("TemplatedDoesNotRun") {
        Templated<int> x;
        x.foo = 3;
        CHECK(x.foo == 10);
    }
};

I'm not sure if this is related to the recent changes, an existing issue, or something I'm doing wrong, but thought I would check here first before raising an issue. Any thoughts?

[Saalvage]

@avoirtech Your template type is not being instantiated anywhere. If you explicitly instantiate the template like so: template class Templated<int>; it works. However, it would run the same test for every instantiation present in your code.. I'm not sure if there's anything to alleviate this..

[avoirtech]

Thanks @Saalvage, that worked for me, and I've raised an issue here to make others aware.