This test is checking what happens if you try and define a class in a C
extension where that constant is already not a class. It was doing this
by overriding ::Date and then trying to require 'date. The issue with
this is that if we ever add 'date' as a dependency for the test runner,
this test will break because the test runner files get implicitly
required in an `assert_separately` block.
Better use an explicit class for this purpose which can't be accidentally
required elsewhere.
* variable.c (rb_class2name): should return real class name, not
singleton class or iclass.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43367 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
