The big TEST_IMPLICIT_DEFINES and TEST_CFG macros have been a big
pain-in-the-ass to maintain. Mostly due to C preprocessor annoyances
(bleh escaped newlines) and no-ifdef workarounds, which make a real mess
of things.
This does two things:
1. Moves all the defines out of test_runner.h and into test_defines.h
(same for benches).
2. Inverts the include logic such that test_defines.h gets included many
times with various "query macros" defined.
Currently just two, but can easily add more:
1. TEST_DEFINE(name, value) - name and default value for a define
2. TEST_CFG(name, value) - name and value for a cfg field
This seems to work surprisingly well. It solves all of the above C
preprocessor issues, and provides a flexible method for defining test
defines.
Note an important part of making this work is that test_defines.h
expands to an empty string by default.
Christopher Haster