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
|
require 'test/unit'
require 'rubygems'
require 'active_record'
$:.unshift File.dirname(__FILE__) + '/../lib'
require File.dirname(__FILE__) + '/../init'
class Test::Unit::TestCase
def assert_queries(num = 1)
$query_count = 0
yield
ensure
assert_equal num, $query_count, "#{$query_count} instead of #{num} queries were executed."
end
def assert_no_queries(&block)
assert_queries(0, &block)
end
end
ActiveRecord::Base.establish_connection(:adapter => "sqlite3", :dbfile => ":memory:")
# AR keeps printing annoying schema statements
$stdout = StringIO.new
def setup_db
ActiveRecord::Base.logger
ActiveRecord::Schema.define(:version => 1) do
create_table :mixins do |t|
t.column :type, :string
t.column :parent_id, :integer
end
end
end
def teardown_db
ActiveRecord::Base.connection.tables.each do |table|
ActiveRecord::Base.connection.drop_table(table)
end
end
class Mixin < ActiveRecord::Base
end
class TreeMixin < Mixin
acts_as_tree :foreign_key => "parent_id", :order => "id"
end
class TreeMixinWithoutOrder < Mixin
acts_as_tree :foreign_key => "parent_id"
end
class RecursivelyCascadedTreeMixin < Mixin
acts_as_tree :foreign_key => "parent_id"
has_one :first_child, :class_name => 'RecursivelyCascadedTreeMixin', :foreign_key => :parent_id
end
class TreeTest < Test::Unit::TestCase
def setup
setup_db
@root1 = TreeMixin.create!
@root_child1 = TreeMixin.create! :parent_id => @root1.id
@child1_child = TreeMixin.create! :parent_id => @root_child1.id
@root_child2 = TreeMixin.create! :parent_id => @root1.id
@root2 = TreeMixin.create!
@root3 = TreeMixin.create!
end
def teardown
teardown_db
end
def test_children
assert_equal @root1.children, [@root_child1, @root_child2]
assert_equal @root_child1.children, [@child1_child]
assert_equal @child1_child.children, []
assert_equal @root_child2.children, []
end
def test_parent
assert_equal @root_child1.parent, @root1
assert_equal @root_child1.parent, @root_child2.parent
assert_nil @root1.parent
end
def test_delete
assert_equal 6, TreeMixin.count
@root1.destroy
assert_equal 2, TreeMixin.count
@root2.destroy
@root3.destroy
assert_equal 0, TreeMixin.count
end
def test_insert
@extra = @root1.children.create
assert @extra
assert_equal @extra.parent, @root1
assert_equal 3, @root1.children.size
assert @root1.children.include?(@extra)
assert @root1.children.include?(@root_child1)
assert @root1.children.include?(@root_child2)
end
def test_ancestors
assert_equal [], @root1.ancestors
assert_equal [@root1], @root_child1.ancestors
assert_equal [@root_child1, @root1], @child1_child.ancestors
assert_equal [@root1], @root_child2.ancestors
assert_equal [], @root2.ancestors
assert_equal [], @root3.ancestors
end
def test_root
assert_equal @root1, TreeMixin.root
assert_equal @root1, @root1.root
assert_equal @root1, @root_child1.root
assert_equal @root1, @child1_child.root
assert_equal @root1, @root_child2.root
assert_equal @root2, @root2.root
assert_equal @root3, @root3.root
end
def test_roots
assert_equal [@root1, @root2, @root3], TreeMixin.roots
end
def test_siblings
assert_equal [@root2, @root3], @root1.siblings
assert_equal [@root_child2], @root_child1.siblings
assert_equal [], @child1_child.siblings
assert_equal [@root_child1], @root_child2.siblings
assert_equal [@root1, @root3], @root2.siblings
assert_equal [@root1, @root2], @root3.siblings
end
def test_self_and_siblings
assert_equal [@root1, @root2, @root3], @root1.self_and_siblings
assert_equal [@root_child1, @root_child2], @root_child1.self_and_siblings
assert_equal [@child1_child], @child1_child.self_and_siblings
assert_equal [@root_child1, @root_child2], @root_child2.self_and_siblings
assert_equal [@root1, @root2, @root3], @root2.self_and_siblings
assert_equal [@root1, @root2, @root3], @root3.self_and_siblings
end
end
class TreeTestWithEagerLoading < Test::Unit::TestCase
def setup
teardown_db
setup_db
@root1 = TreeMixin.create!
@root_child1 = TreeMixin.create! :parent_id => @root1.id
@child1_child = TreeMixin.create! :parent_id => @root_child1.id
@root_child2 = TreeMixin.create! :parent_id => @root1.id
@root2 = TreeMixin.create!
@root3 = TreeMixin.create!
@rc1 = RecursivelyCascadedTreeMixin.create!
@rc2 = RecursivelyCascadedTreeMixin.create! :parent_id => @rc1.id
@rc3 = RecursivelyCascadedTreeMixin.create! :parent_id => @rc2.id
@rc4 = RecursivelyCascadedTreeMixin.create! :parent_id => @rc3.id
end
def teardown
teardown_db
end
def test_eager_association_loading
roots = TreeMixin.find(:all, :include => :children, :conditions => "mixins.parent_id IS NULL", :order => "mixins.id")
assert_equal [@root1, @root2, @root3], roots
assert_no_queries do
assert_equal 2, roots[0].children.size
assert_equal 0, roots[1].children.size
assert_equal 0, roots[2].children.size
end
end
def test_eager_association_loading_with_recursive_cascading_three_levels_has_many
root_node = RecursivelyCascadedTreeMixin.find(:first, :include => { :children => { :children => :children } }, :order => 'mixins.id')
assert_equal @rc4, assert_no_queries { root_node.children.first.children.first.children.first }
end
def test_eager_association_loading_with_recursive_cascading_three_levels_has_one
root_node = RecursivelyCascadedTreeMixin.find(:first, :include => { :first_child => { :first_child => :first_child } }, :order => 'mixins.id')
assert_equal @rc4, assert_no_queries { root_node.first_child.first_child.first_child }
end
def test_eager_association_loading_with_recursive_cascading_three_levels_belongs_to
leaf_node = RecursivelyCascadedTreeMixin.find(:first, :include => { :parent => { :parent => :parent } }, :order => 'mixins.id DESC')
assert_equal @rc1, assert_no_queries { leaf_node.parent.parent.parent }
end
end
class TreeTestWithoutOrder < Test::Unit::TestCase
def setup
setup_db
@root1 = TreeMixinWithoutOrder.create!
@root2 = TreeMixinWithoutOrder.create!
end
def teardown
teardown_db
end
def test_root
assert [@root1, @root2].include?(TreeMixinWithoutOrder.root)
end
def test_roots
assert_equal [], [@root1, @root2] - TreeMixinWithoutOrder.roots
end
end
|
