[boost] [smart_ptr] regression test case enhancement

From: Daniel Frey (d.frey_at_[hidden])
Date: 2008-04-30 02:34:20

I wrote two reference implementations for enable_shared_from_this.hpp,
both are now in
<https://svn.boost.org/svn/boost/sandbox/libs/smart_ptr/daniel_frey>.
Both are tested and pass all regression tests - except for the
non-enhanced version which obviously doesn't pass esft_constructor_test.

The important thing is, that this test showed something else: The
current tests without esft_constructor tests don't check who takes
ownership of an enable_shared_from_this-derived object in case there are
multiple simultaneous owners available.

The attached patch checks that - and AFAICT it would fail with the
1.35.0 esft. (Both reference versions from above do pass).

Should this be added?

Regards, Daniel