startest

-module(startest@assertion_error).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([raise/1]).
-export_type([assertion_error/0, rescued_assertion_error/0]).

-type assertion_error() :: {assertion_error, binary(), binary(), binary()}.

-type rescued_assertion_error() :: {rescued_assertion_error, binary()}.

-spec show_diff(binary(), binary()) -> binary().
show_diff(Actual, Expected) ->
    gleam@string:concat(
        [gleam_community@ansi:green(<<"- Expected"/utf8>>),
            <<"\n"/utf8>>,
            gleam_community@ansi:red(<<"+ Received"/utf8>>),
            <<"\n\n"/utf8>>,
            gleam_community@ansi:green(<<"- "/utf8, Expected/binary>>),
            <<"\n"/utf8>>,
            gleam_community@ansi:red(<<"+ "/utf8, Actual/binary>>)]
    ).

-spec raise(assertion_error()) -> any().
raise(Error) ->
    Blank_line = <<"\n\n"/utf8>>,
    erlang:error(#{gleam_error => panic,
            message => gleam@string:concat(
                [erlang:element(2, Error),
                    Blank_line,
                    show_diff(
                        erlang:element(3, Error),
                        erlang:element(4, Error)
                    )]
            ),
            module => <<"startest/assertion_error"/utf8>>,
            function => <<"raise"/utf8>>,
            line => 18}).