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Glacier brings incremental interactive unit testing to Gleam. It is meant as a drop-in replacement for Gleeunit and depends on and wraps a fork of it.

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glacier src gleeunit2_ffi.erl
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src/gleeunit2_ffi.erl 

-module(gleeunit2_ffi).



-export([find_files/2, should_equal/2, should_not_equal/2, should_be_ok/1,

         should_be_error/1, get_cwd/0, get_cwd_as_binary/0]).



-include_lib("eunit/include/eunit.hrl").



find_files(Pattern, In) ->

  Results = filelib:wildcard(binary_to_list(Pattern), binary_to_list(In)),

  lists:map(fun list_to_binary/1, Results).



should_equal(Actual, Expected) ->

    ?assertEqual(Expected, Actual),

    nil.



should_not_equal(Actual, Expected) ->

    ?assertNotEqual(Expected, Actual),

    nil.



should_be_ok(A) ->

    ?assertMatch({ok, _}, A),

    element(2, A).



should_be_error(A) ->

    ?assertMatch({error, _}, A),

    element(2, A).



get_cwd() ->

    {ok, Cwd} = file:get_cwd(),

    Cwd.



get_cwd_as_binary() ->

    iolist_to_binary(get_cwd()).