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C-API Specs
These specs test the C-API from Ruby. The following are conventions for the
specs:
1. Put specs for functions related to a Ruby class in a file named according
to the class. For example, for rb_ary_new function, put the specs in
optional/capi/array_spec.rb
2. Put the C file containing the C functions for array_spec.rb in
optional/capi/ext/array_spec.c
3. Add a '#define HAVE_RB_ARY_NEW 1' to rubyspec.h
4. Name the C extension class 'CApiArraySpecs'.
5. Name the C functions 'array_spec_rb_ary_new'.
6. Wrap the code in the optional/capi/ext/array_spec.c in
'#ifdef HAVE_RB_ARY_NEW'
7. Attach the C function to the class using the name 'rb_ary_new'
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