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%% ----------------------------------------------------------------------------
%%
%% oauth2: Erlang OAuth 2.0 implementation
%%
%% Copyright (c) 2012 KIVRA
%%
%% Permission is hereby granted, free of charge, to any person obtaining a
%% copy of this software and associated documentation files (the "Software"),
%% to deal in the Software without restriction, including without limitation
%% the rights to use, copy, modify, merge, publish, distribute, sublicense,
%% and/or sell copies of the Software, and to permit persons to whom the
%% Software is furnished to do so, subject to the following conditions:
%%
%% The above copyright notice and this permission notice shall be included in
%% all copies or substantial portions of the Software.
%%
%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
%% FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
%% DEALINGS IN THE SOFTWARE.
%%
%% ----------------------------------------------------------------------------
-module(oauth2_token_tests).
-include("oauth2.hrl").
-include_lib("eunit/include/eunit.hrl").
%%%===================================================================
%%% Test cases
%%%===================================================================
generate_test() ->
Token = oauth2_token:generate(),
?assertEqual(byte_size(Token), ?TOKEN_LENGTH),
?assert(lists:all(fun is_alphanum/1, binary_to_list(Token))).
generate_low_entropy_test_() ->
{setup,
fun() ->
meck:new(oauth2_token, [passthrough]),
meck:expect(oauth2_token, strong_rand_bytes_proxy,
fun(_) -> throw(low_entropy) end)
end,
fun(_) ->
meck:unload(oauth2_token)
end,
fun(_) ->
[
?_assertEqual(
byte_size(oauth2_token:generate()),
?TOKEN_LENGTH),
?_assert(
lists:all(fun is_alphanum/1,
binary_to_list(
oauth2_token:generate())))
]
end}.
%%%===================================================================
%%% Utility functions
%%%===================================================================
%% @doc Returns true for alphanumeric ASCII characters, false for all others.
-spec is_alphanum(Char :: char()) -> boolean().
is_alphanum(C) when C >= 16#30 andalso C =< 16#39 ->
true;
is_alphanum(C) when C >= 16#41 andalso C =< 16#5A ->
true;
is_alphanum(C) when C >= 16#61 andalso C =< 16#7A ->
true;
is_alphanum(_) ->
false.
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