Pekka Paalanen authored Mar 17, 2022 and Pekka Paalanen committed May 27, 2022

'color_characteristics_config_error' test ensures that all code paths in
parse_color_characteristics() and wet_output_set_color_characteristics()
get exercised.  The return value and logged error messages are checked.

Other cases test the weston_hdr_metadata_type1 validation.

These are for the sake of test coverage, but also an example of how to
test a function from main.c, and how to capture messages from
weston_log().

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>