1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
require 'active_support/core_ext/kernel/reporting'
module ActiveResource
class InvalidRequestError < StandardError; end #:nodoc:
# One thing that has always been a pain with remote web services is testing. The HttpMock
# class makes it easy to test your Active Resource models by creating a set of mock responses to specific
# requests.
#
# To test your Active Resource model, you simply call the ActiveResource::HttpMock.respond_to
# method with an attached block. The block declares a set of URIs with expected input, and the output
# each request should return. The passed in block has any number of entries in the following generalized
# format:
#
# mock.http_method(path, request_headers = {}, body = nil, status = 200, response_headers = {})
#
# * <tt>http_method</tt> - The HTTP method to listen for. This can be +get+, +post+, +put+, +delete+ or
# +head+.
# * <tt>path</tt> - A string, starting with a "/", defining the URI that is expected to be
# called.
# * <tt>request_headers</tt> - Headers that are expected along with the request. This argument uses a
# hash format, such as <tt>{ "Content-Type" => "application/xml" }</tt>. This mock will only trigger
# if your tests sends a request with identical headers.
# * <tt>body</tt> - The data to be returned. This should be a string of Active Resource parseable content,
# such as XML.
# * <tt>status</tt> - The HTTP response code, as an integer, to return with the response.
# * <tt>response_headers</tt> - Headers to be returned with the response. Uses the same hash format as
# <tt>request_headers</tt> listed above.
#
# In order for a mock to deliver its content, the incoming request must match by the <tt>http_method</tt>,
# +path+ and <tt>request_headers</tt>. If no match is found an InvalidRequestError exception
# will be raised letting you know you need to create a new mock for that request.
#
# ==== Example
# def setup
# @matz = { :id => 1, :name => "Matz" }.to_xml(:root => "person")
# ActiveResource::HttpMock.respond_to do |mock|
# mock.post "/people.xml", {}, @matz, 201, "Location" => "/people/1.xml"
# mock.get "/people/1.xml", {}, @matz
# mock.put "/people/1.xml", {}, nil, 204
# mock.delete "/people/1.xml", {}, nil, 200
# end
# end
#
# def test_get_matz
# person = Person.find(1)
# assert_equal "Matz", person.name
# end
#
class HttpMock
class Responder #:nodoc:
def initialize(responses)
@responses = responses
end
for method in [ :post, :put, :get, :delete, :head ]
# def post(path, request_headers = {}, body = nil, status = 200, response_headers = {})
# @responses[Request.new(:post, path, nil, request_headers)] = Response.new(body || "", status, response_headers)
# end
module_eval <<-EOE, __FILE__, __LINE__ + 1
def #{method}(path, request_headers = {}, body = nil, status = 200, response_headers = {})
@responses << [Request.new(:#{method}, path, nil, request_headers), Response.new(body || "", status, response_headers)]
end
EOE
end
end
class << self
# Returns an array of all request objects that have been sent to the mock. You can use this to check
# if your model actually sent an HTTP request.
#
# ==== Example
# def setup
# @matz = { :id => 1, :name => "Matz" }.to_xml(:root => "person")
# ActiveResource::HttpMock.respond_to do |mock|
# mock.get "/people/1.xml", {}, @matz
# end
# end
#
# def test_should_request_remote_service
# person = Person.find(1) # Call the remote service
#
# # This request object has the same HTTP method and path as declared by the mock
# expected_request = ActiveResource::Request.new(:get, "/people/1.xml")
#
# # Assert that the mock received, and responded to, the expected request from the model
# assert ActiveResource::HttpMock.requests.include?(expected_request)
# end
def requests
@@requests ||= []
end
# Returns the list of requests and their mocked responses. Look up a
# response for a request using responses.assoc(request).
def responses
@@responses ||= []
end
# Accepts a block which declares a set of requests and responses for the HttpMock to respond to. See the main
# ActiveResource::HttpMock description for a more detailed explanation.
def respond_to(pairs = {}) #:yields: mock
reset!
responses.concat pairs.to_a
if block_given?
yield Responder.new(responses)
else
Responder.new(responses)
end
end
# Deletes all logged requests and responses.
def reset!
requests.clear
responses.clear
end
end
# body? methods
{ true => %w(post put),
false => %w(get delete head) }.each do |has_body, methods|
methods.each do |method|
# def post(path, body, headers)
# request = ActiveResource::Request.new(:post, path, body, headers)
# self.class.requests << request
# self.class.responses.assoc(request).try(:second) || raise(InvalidRequestError.new("No response recorded for #{request}"))
# end
module_eval <<-EOE, __FILE__, __LINE__ + 1
def #{method}(path, #{'body, ' if has_body}headers)
request = ActiveResource::Request.new(:#{method}, path, #{has_body ? 'body, ' : 'nil, '}headers)
self.class.requests << request
if response = self.class.responses.assoc(request)
response[1]
else
raise InvalidRequestError.new("No response recorded for \#{request}")
end
end
EOE
end
end
def initialize(site) #:nodoc:
@site = site
end
end
class Request
attr_accessor :path, :method, :body, :headers
def initialize(method, path, body = nil, headers = {})
@method, @path, @body, @headers = method, path, body, headers
end
def ==(req)
path == req.path && method == req.method && headers_match?(req)
end
def to_s
"<#{method.to_s.upcase}: #{path} [#{headers}] (#{body})>"
end
private
def headers_match?(req)
# Ignore format header on equality if it's not defined
format_header = ActiveResource::Connection::HTTP_FORMAT_HEADER_NAMES[method]
if headers[format_header].present? || req.headers[format_header].blank?
headers == req.headers
else
headers.dup.merge(format_header => req.headers[format_header]) == req.headers
end
end
end
class Response
attr_accessor :body, :message, :code, :headers
def initialize(body, message = 200, headers = {})
@body, @message, @headers = body, message.to_s, headers
@code = @message[0,3].to_i
resp_cls = Net::HTTPResponse::CODE_TO_OBJ[@code.to_s]
if resp_cls && !resp_cls.body_permitted?
@body = nil
end
if @body.nil?
self['Content-Length'] = "0"
else
self['Content-Length'] = body.size.to_s
end
end
def success?
(200..299).include?(code)
end
def [](key)
headers[key]
end
def []=(key, value)
headers[key] = value
end
def ==(other)
if (other.is_a?(Response))
other.body == body && other.message == message && other.headers == headers
else
false
end
end
end
class Connection
private
silence_warnings do
def http
@http ||= HttpMock.new(@site)
end
end
end
end
|
