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
|
require "cases/helper"
class DirtyTest < ActiveModel::TestCase
class DirtyModel
include ActiveModel::Dirty
define_attribute_methods :name, :color, :size
def initialize
@name = nil
@color = nil
@size = nil
end
def name
@name
end
def name=(val)
name_will_change!
@name = val
end
def color
@color
end
def color=(val)
color_will_change! unless val == @color
@color = val
end
def size
@size
end
def size=(val)
attribute_will_change!(:size) unless val == @size
@size = val
end
def save
changes_applied
end
def reload
clear_changes_information
end
end
setup do
@model = DirtyModel.new
end
test "setting attribute will result in change" do
assert !@model.changed?
assert !@model.name_changed?
@model.name = "Ringo"
assert @model.changed?
assert @model.name_changed?
end
test "list of changed attribute keys" do
assert_equal [], @model.changed
@model.name = "Paul"
assert_equal ["name"], @model.changed
end
test "changes to attribute values" do
assert !@model.changes["name"]
@model.name = "John"
assert_equal [nil, "John"], @model.changes["name"]
end
test "checking if an attribute has changed to a particular value" do
@model.name = "Ringo"
assert @model.name_changed?(from: nil, to: "Ringo")
assert_not @model.name_changed?(from: "Pete", to: "Ringo")
assert @model.name_changed?(to: "Ringo")
assert_not @model.name_changed?(to: "Pete")
assert @model.name_changed?(from: nil)
assert_not @model.name_changed?(from: "Pete")
end
test "changes accessible through both strings and symbols" do
@model.name = "David"
assert_not_nil @model.changes[:name]
assert_not_nil @model.changes["name"]
end
test "be consistent with symbols arguments after the changes are applied" do
@model.name = "David"
assert @model.attribute_changed?(:name)
@model.save
@model.name = "Rafael"
assert @model.attribute_changed?(:name)
end
test "attribute mutation" do
@model.instance_variable_set("@name", "Yam")
assert !@model.name_changed?
@model.name.replace("Hadad")
assert !@model.name_changed?
@model.name_will_change!
@model.name.replace("Baal")
assert @model.name_changed?
end
test "resetting attribute" do
@model.name = "Bob"
@model.restore_name!
assert_nil @model.name
assert !@model.name_changed?
end
test "setting color to same value should not result in change being recorded" do
@model.color = "red"
assert @model.color_changed?
@model.save
assert !@model.color_changed?
assert !@model.changed?
@model.color = "red"
assert !@model.color_changed?
assert !@model.changed?
end
test "saving should reset model's changed status" do
@model.name = "Alf"
assert @model.changed?
@model.save
assert !@model.changed?
assert !@model.name_changed?
end
test "saving should preserve previous changes" do
@model.name = "Jericho Cane"
@model.save
assert_equal [nil, "Jericho Cane"], @model.previous_changes["name"]
end
test "setting new attributes should not affect previous changes" do
@model.name = "Jericho Cane"
@model.save
@model.name = "DudeFella ManGuy"
assert_equal [nil, "Jericho Cane"], @model.name_previous_change
end
test "saving should preserve model's previous changed status" do
@model.name = "Jericho Cane"
@model.save
assert @model.name_previously_changed?
end
test "previous value is preserved when changed after save" do
assert_equal({}, @model.changed_attributes)
@model.name = "Paul"
assert_equal({ "name" => nil }, @model.changed_attributes)
@model.save
@model.name = "John"
assert_equal({ "name" => "Paul" }, @model.changed_attributes)
end
test "changing the same attribute multiple times retains the correct original value" do
@model.name = "Otto"
@model.save
@model.name = "DudeFella ManGuy"
@model.name = "Mr. Manfredgensonton"
assert_equal ["Otto", "Mr. Manfredgensonton"], @model.name_change
assert_equal @model.name_was, "Otto"
end
test "using attribute_will_change! with a symbol" do
@model.size = 1
assert @model.size_changed?
end
test "reload should reset all changes" do
@model.name = "Dmitry"
@model.name_changed?
@model.save
@model.name = "Bob"
assert_equal [nil, "Dmitry"], @model.previous_changes["name"]
assert_equal "Dmitry", @model.changed_attributes["name"]
@model.reload
assert_equal ActiveSupport::HashWithIndifferentAccess.new, @model.previous_changes
assert_equal ActiveSupport::HashWithIndifferentAccess.new, @model.changed_attributes
end
test "restore_attributes should restore all previous data" do
@model.name = "Dmitry"
@model.color = "Red"
@model.save
@model.name = "Bob"
@model.color = "White"
@model.restore_attributes
assert_not @model.changed?
assert_equal "Dmitry", @model.name
assert_equal "Red", @model.color
end
test "restore_attributes can restore only some attributes" do
@model.name = "Dmitry"
@model.color = "Red"
@model.save
@model.name = "Bob"
@model.color = "White"
@model.restore_attributes(["name"])
assert @model.changed?
assert_equal "Dmitry", @model.name
assert_equal "White", @model.color
end
end
|
