m_http_mock_SUITE.erl

%%
%%   Copyright (c) 2016, Dmitry Kolesnikov
%%   Copyright (c) 2016, Mario Cardona
%%   All Rights Reserved.
%%
%%   Licensed under the Apache License, Version 2.0 (the "License");
%%   you may not use this file except in compliance with the License.
%%   You may obtain a copy of the License at
%%
%%       http://www.apache.org/licenses/LICENSE-2.0
%%
%%   Unless required by applicable law or agreed to in writing, software
%%   distributed under the License is distributed on an "AS IS" BASIS,
%%   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%%   See the License for the specific language governing permissions and
%%   limitations under the License.
%%
%% @doc
%%   example of declarative testing of RESTfull API
-module(m_http_mock_SUITE).
-compile({parse_transform, category}).

-export([all/0]).
-compile(export_all).

%%
all() ->
   [Test || {Test, NAry} <- ?MODULE:module_info(exports), 
      Test =/= module_info,
      Test =/= init_per_suite,
      Test =/= end_per_suite,
      NAry =:= 1
   ].

%%
%%
httpbin_status_200(_) ->
   m_http_mock:init(200, [], []),
   {ok, _} = m_http:once(
      [m_http ||
         _ > "GET http://httpbin.org/status/200",

         _ < 200
      ]
   ),
   m_http_mock:free().

%%
%%
httpbin_headers(_) ->
   m_http_mock:init(200, 
      [
         {<<"Host">>, <<"httpbin.org">>},
         {<<"Content-Type">>, <<"application/json">>}
      ],
      [<<"{}">>]
   ),
   {ok, _} = m_http:once(
      [m_http ||
         _ > "GET http://httpbin.org/headers",

         _ < 200,
         _ < "Host: _",
         _ < "Content-Type: application/json",
         _ < '*'
      ]
   ),
   m_http_mock:free().

%%
%%
httpbin_json(_) ->
   m_http_mock:init(200, 
      [
         {<<"Host">>, <<"httpbin.org">>},
         {<<"Content-Type">>, <<"application/json">>}
      ],
      [<<"{\"slideshow\":{\"title\":\"mock title\", \"slides\":[]}}">>]
   ),
   {ok, _} = m_http:once(
      [m_http ||
         _ > "GET http://httpbin.org/json",
         _ > "Accept: application/json",

         _ < 200,
         _ < "Content-Type: application/json",
         _ < lens:c(lens:at(<<"slideshow">>), lens:at(<<"title">>), lens:defined()),
         _ < lens:c(lens:at(<<"slideshow">>), lens:at(<<"slides">>))
      ]
   ),
   m_http_mock:free().