Adds ?ALWAYS and ?SOMETIMES macros

proper-testing / proper

PropEr: a QuickCheck-inspired property-based testing tool for Erlang

http://proper-testing.github.io

GNU General Public License v3.0

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Adds ?ALWAYS and ?SOMETIMES macros #230

Open x4lldux opened 4 years ago

x4lldux commented 4 years ago

Implemented two macros marked TODO. The shrinking usage case, I've described in documentation, ~~will be possible once, this commit x4lldux/proper@f1582afdae55e504280c76653b543b53a17d2334 is merged, but I have to figure out how to test this first (pointers will be very welcome!)~~ is in #232 PR.