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
| | require 'uri'
require 'stringio'
require 'rack'
require 'rack/lint'
require 'rack/utils'
require 'rack/response'
module Rack
# Rack::MockRequest helps testing your Rack application without
# actually using HTTP.
#
# After performing a request on a URL with get/post/put/patch/delete, it
# returns a MockResponse with useful helper methods for effective
# testing.
#
# You can pass a hash with additional configuration to the
# get/post/put/patch/delete.
# <tt>:input</tt>:: A String or IO-like to be used as rack.input.
# <tt>:fatal</tt>:: Raise a FatalWarning if the app writes to rack.errors.
# <tt>:lint</tt>:: If true, wrap the application in a Rack::Lint.
class MockRequest
class FatalWarning < RuntimeError
end
class FatalWarner
def puts(warning)
raise FatalWarning, warning
end
def write(warning)
raise FatalWarning, warning
end
def flush
end
def string
""
end
end
DEFAULT_ENV = {
RACK_VERSION => Rack::VERSION,
RACK_INPUT => StringIO.new,
RACK_ERRORS => StringIO.new,
RACK_MULTITHREAD => true,
RACK_MULTIPROCESS => true,
RACK_RUNONCE => false,
}.freeze
def initialize(app)
@app = app
end
def get(uri, opts={}) request(GET, uri, opts) end
def post(uri, opts={}) request(POST, uri, opts) end
def put(uri, opts={}) request(PUT, uri, opts) end
def patch(uri, opts={}) request(PATCH, uri, opts) end
def delete(uri, opts={}) request(DELETE, uri, opts) end
def head(uri, opts={}) request(HEAD, uri, opts) end
def options(uri, opts={}) request(OPTIONS, uri, opts) end
def request(method=GET, uri="", opts={})
env = self.class.env_for(uri, opts.merge(:method => method))
if opts[:lint]
app = Rack::Lint.new(@app)
else
app = @app
end
errors = env[RACK_ERRORS]
status, headers, body = app.call(env)
MockResponse.new(status, headers, body, errors)
ensure
body.close if body.respond_to?(:close)
end
# For historical reasons, we're pinning to RFC 2396.
# URI::Parser = URI::RFC2396_Parser
def self.parse_uri_rfc2396(uri)
@parser ||= URI::Parser.new
@parser.parse(uri)
end
# Return the Rack environment used for a request to +uri+.
def self.env_for(uri="", opts={})
uri = parse_uri_rfc2396(uri)
uri.path = "/#{uri.path}" unless uri.path[0] == ?/
env = DEFAULT_ENV.dup
env[REQUEST_METHOD] = opts[:method] ? opts[:method].to_s.upcase : GET
env[SERVER_NAME] = uri.host || "example.org"
env[SERVER_PORT] = uri.port ? uri.port.to_s : "80"
env[QUERY_STRING] = uri.query.to_s
env[PATH_INFO] = (!uri.path || uri.path.empty?) ? "/" : uri.path
env[RACK_URL_SCHEME] = uri.scheme || "http"
env[HTTPS] = env[RACK_URL_SCHEME] == "https" ? "on" : "off"
env[SCRIPT_NAME] = opts[:script_name] || ""
if opts[:fatal]
env[RACK_ERRORS] = FatalWarner.new
else
env[RACK_ERRORS] = StringIO.new
end
if params = opts[:params]
if env[REQUEST_METHOD] == GET
params = Utils.parse_nested_query(params) if params.is_a?(String)
params.update(Utils.parse_nested_query(env[QUERY_STRING]))
env[QUERY_STRING] = Utils.build_nested_query(params)
elsif !opts.has_key?(:input)
opts["CONTENT_TYPE"] = "application/x-www-form-urlencoded"
if params.is_a?(Hash)
if data = Rack::Multipart.build_multipart(params)
opts[:input] = data
opts["CONTENT_LENGTH"] ||= data.length.to_s
opts["CONTENT_TYPE"] = "multipart/form-data; boundary=#{Rack::Multipart::MULTIPART_BOUNDARY}"
else
opts[:input] = Utils.build_nested_query(params)
end
else
opts[:input] = params
end
end
end
empty_str = String.new.force_encoding(Encoding::ASCII_8BIT)
opts[:input] ||= empty_str
if String === opts[:input]
rack_input = StringIO.new(opts[:input])
else
rack_input = opts[:input]
end
rack_input.set_encoding(Encoding::BINARY)
env[RACK_INPUT] = rack_input
env["CONTENT_LENGTH"] ||= env[RACK_INPUT].length.to_s
opts.each { |field, value|
env[field] = value if String === field
}
env
end
end
# Rack::MockResponse provides useful helpers for testing your apps.
# Usually, you don't create the MockResponse on your own, but use
# MockRequest.
class MockResponse < Rack::Response
# Headers
attr_reader :original_headers
# Errors
attr_accessor :errors
def initialize(status, headers, body, errors=StringIO.new(""))
@original_headers = headers
@errors = errors.string if errors.respond_to?(:string)
super(body, status, headers)
end
def =~(other)
body =~ other
end
def match(other)
body.match other
end
def body
# FIXME: apparently users of MockResponse expect the return value of
# MockResponse#body to be a string. However, the real response object
# returns the body as a list.
#
# See spec_showstatus.rb:
#
# should "not replace existing messages" do
# ...
# res.body.should == "foo!"
# end
super.join
end
def empty?
[201, 204, 304].include? status
end
end
end
|