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
|
#
# Author:: Serdar Sutay (<serdar@chef.io>)
# Copyright:: Copyright 2014-2016, Chef Software, Inc.
# License:: Apache License, Version 2.0
#
# 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.
#
require "spec_helper"
require "stringio"
describe Chef::HTTP::ValidateContentLength do
class TestClient < Chef::HTTP
use Chef::HTTP::ValidateContentLength
end
let(:method) { "GET" }
let(:url) { "http://dummy.com" }
let(:headers) { {} }
let(:data) { false }
let(:request) { }
let(:return_value) { "200" }
# Test Variables
let(:request_type) { :streaming }
let(:content_length_value) { 23 }
let(:streaming_length) { 23 }
let(:response_body) { "Thanks for checking in." }
let(:response_headers) {
{
"content-length" => content_length_value
}
}
let(:response) {
m = double("HttpResponse", :body => response_body)
allow(m).to receive(:[]) do |key|
response_headers[key]
end
m
}
let(:middleware) {
client = TestClient.new(url)
client.middlewares[0]
}
def run_content_length_validation
stream_handler = middleware.stream_response_handler(response)
middleware.handle_request(method, url, headers, data)
case request_type
when :streaming
# First stream the data
data_length = streaming_length
while data_length > 0
chunk_size = data_length > 10 ? 10 : data_length
stream_handler.handle_chunk(double("Chunk", :bytesize => chunk_size))
data_length -= chunk_size
end
# Finally call stream complete
middleware.handle_stream_complete(response, request, return_value)
when :direct
middleware.handle_response(response, request, return_value)
else
raise "Unknown request_type: #{request_type}"
end
end
let(:debug_stream) { StringIO.new }
let(:debug_output) { debug_stream.string }
before(:each) do
@original_log_level = Chef::Log.level
Chef::Log.level = :debug
allow(Chef::Log).to receive(:debug) do |message|
debug_stream.puts message
end
end
after(:each) do
Chef::Log.level = @original_log_level
end
describe "without response body" do
let(:request_type) { :direct }
let(:response_body) { "Thanks for checking in." }
it "shouldn't raise error" do
expect { run_content_length_validation }.not_to raise_error
end
end
describe "without Content-Length header" do
let(:response_headers) { { } }
[ "direct", "streaming" ].each do |req_type|
describe "when running #{req_type} request" do
let(:request_type) { req_type.to_sym }
it "should skip validation and log for debug" do
run_content_length_validation
expect(debug_output).to include("HTTP server did not include a Content-Length header in response")
end
end
end
end
describe "with correct Content-Length header" do
[ "direct", "streaming" ].each do |req_type|
describe "when running #{req_type} request" do
let(:request_type) { req_type.to_sym }
it "should validate correctly" do
run_content_length_validation
expect(debug_output).to include("Content-Length validated correctly.")
end
end
end
end
describe "with wrong Content-Length header" do
let(:content_length_value) { 25 }
[ "direct", "streaming" ].each do |req_type|
describe "when running #{req_type} request" do
let(:request_type) { req_type.to_sym }
it "should raise ContentLengthMismatch error" do
expect { run_content_length_validation }.to raise_error(Chef::Exceptions::ContentLengthMismatch)
end
end
end
end
describe "when download is interrupted" do
let(:streaming_length) { 12 }
it "should raise ContentLengthMismatch error" do
expect { run_content_length_validation }.to raise_error(Chef::Exceptions::ContentLengthMismatch)
end
end
describe "when Transfer-Encoding & Content-Length is set" do
let(:response_headers) {
{
"content-length" => content_length_value,
"transfer-encoding" => "chunked",
}
}
[ "direct", "streaming" ].each do |req_type|
describe "when running #{req_type} request" do
let(:request_type) { req_type.to_sym }
it "should skip validation and log for debug" do
run_content_length_validation
expect(debug_output).to include("Transfer-Encoding header is set, skipping Content-Length check.")
end
end
end
end
describe "when client is being reused" do
before do
run_content_length_validation
expect(debug_output).to include("Content-Length validated correctly.")
end
it "should reset internal counter" do
expect(middleware.instance_variable_get(:@content_length_counter)).to be_nil
end
it "should validate correctly second time" do
run_content_length_validation
expect(debug_output).to include("Content-Length validated correctly.")
end
end
end
|