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
|
require 'spec_helper'
module RSpec
module Mocks
describe "A chained method stub" do
let(:object) { Object.new }
context "with one method in chain" do
context "using and_return" do
it "returns expected value from chaining only one method call" do
object.stub_chain(:msg1).and_return(:return_value)
expect(object.msg1).to equal(:return_value)
end
end
context "using a block" do
it "returns the correct value" do
object.stub_chain(:msg1) { :return_value }
expect(object.msg1).to equal(:return_value)
end
end
context "using a hash" do
it "returns the value of the key/value pair" do
object.stub_chain(:msg1 => :return_value)
expect(object.msg1).to equal(:return_value)
end
end
end
context "with two methods in chain" do
it "accepts any number of arguments to the stubbed messages" do
object.stub_chain(:msg1, :msg2).and_return(:return_value)
expect(object.msg1("nonsense", :value).msg2("another", :nonsense, 3.0, "value")).to eq(:return_value)
end
it "accepts any number of arguments to the stubbed messages with a return value from a hash" do
object.stub_chain(:msg1, :msg2 => :return_value)
expect(object.msg1("nonsense", :value).msg2("another", :nonsense, 3.0, "value")).to eq(:return_value)
end
context "using and_return" do
it "returns expected value from chaining two method calls" do
object.stub_chain(:msg1, :msg2).and_return(:return_value)
expect(object.msg1.msg2).to equal(:return_value)
end
end
context "using a block" do
it "returns the correct value" do
object.stub_chain(:msg1, :msg2) { :return_value }
expect(object.msg1.msg2).to equal(:return_value)
end
end
context "using a hash" do
it "returns the value of the key/value pair" do
object.stub_chain(:msg1, :msg2 => :return_value)
expect(object.msg1.msg2).to equal(:return_value)
end
end
end
context "with four methods in chain" do
context "using and_return" do
it "returns expected value from chaining two method calls" do
object.stub_chain(:msg1, :msg2, :msg3, :msg4).and_return(:return_value)
expect(object.msg1.msg2.msg3.msg4).to equal(:return_value)
end
end
context "using a block" do
it "returns the correct value" do
object.stub_chain(:msg1, :msg2, :msg3, :msg4) { :return_value }
expect(object.msg1.msg2.msg3.msg4).to equal(:return_value)
end
end
context "using a hash" do
it "returns the value of the key/value pair" do
object.stub_chain(:msg1, :msg2, :msg3, :msg4 => :return_value)
expect(object.msg1.msg2.msg3.msg4).to equal(:return_value)
end
end
context "using a hash with a string key" do
it "returns the value of the key/value pair" do
object.stub_chain("msg1.msg2.msg3.msg4" => :return_value)
expect(object.msg1.msg2.msg3.msg4).to equal(:return_value)
end
end
end
it "returns expected value from chaining four method calls" do
object.stub_chain(:msg1, :msg2, :msg3, :msg4).and_return(:return_value)
expect(object.msg1.msg2.msg3.msg4).to equal(:return_value)
end
context "with messages shared across multiple chains" do
context "using and_return" do
context "starting with the same message" do
it "returns expected value" do
object.stub_chain(:msg1, :msg2, :msg3).and_return(:first)
object.stub_chain(:msg1, :msg2, :msg4).and_return(:second)
expect(object.msg1.msg2.msg3).to equal(:first)
expect(object.msg1.msg2.msg4).to equal(:second)
end
end
context "starting with the different messages" do
it "returns expected value" do
object.stub_chain(:msg1, :msg2, :msg3).and_return(:first)
object.stub_chain(:msg4, :msg2, :msg3).and_return(:second)
expect(object.msg1.msg2.msg3).to equal(:first)
expect(object.msg4.msg2.msg3).to equal(:second)
end
end
end
context "using => value" do
context "starting with the same message" do
it "returns expected value" do
object.stub_chain(:msg1, :msg2, :msg3 => :first)
object.stub_chain(:msg1, :msg2, :msg4 => :second)
expect(object.msg1.msg2.msg3).to equal(:first)
expect(object.msg1.msg2.msg4).to equal(:second)
end
end
context "starting with different messages" do
it "returns expected value" do
object.stub_chain(:msg1, :msg2, :msg3 => :first)
object.stub_chain(:msg4, :msg2, :msg3 => :second)
expect(object.msg1.msg2.msg3).to equal(:first)
expect(object.msg4.msg2.msg3).to equal(:second)
end
end
end
end
it "returns expected value when chain is a dot separated string, like stub_chain('msg1.msg2.msg3')" do
object.stub_chain("msg1.msg2.msg3").and_return(:return_value)
expect(object.msg1.msg2.msg3).to equal(:return_value)
end
it "returns expected value from two chains with shared messages at the beginning" do
object.stub_chain(:msg1, :msg2, :msg3, :msg4).and_return(:first)
object.stub_chain(:msg1, :msg2, :msg3, :msg5).and_return(:second)
expect(object.msg1.msg2.msg3.msg4).to equal(:first)
expect(object.msg1.msg2.msg3.msg5).to equal(:second)
end
it "handles private instance methods (like Object#select) in the middle of a chain" do
object.stub_chain(:msg1, :select, :msg3 => 'answer')
expect(object.msg1.select.msg3).to eq 'answer'
end
end
end
end
|
