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
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
require "cases/helper"
require 'models/post'
require 'models/comment'
require 'models/author'
require 'models/rating'
module ActiveRecord
class RelationTest < ActiveRecord::TestCase
fixtures :posts, :comments, :authors
class FakeKlass < Struct.new(:table_name, :name)
extend ActiveRecord::Delegation::DelegateCache
inherited self
def self.connection
Post.connection
end
def self.table_name
'fake_table'
end
end
def test_construction
relation = Relation.new FakeKlass, :b
assert_equal FakeKlass, relation.klass
assert_equal :b, relation.table
assert !relation.loaded, 'relation is not loaded'
end
def test_responds_to_model_and_returns_klass
relation = Relation.new FakeKlass, :b
assert_equal FakeKlass, relation.model
end
def test_initialize_single_values
relation = Relation.new FakeKlass, :b
(Relation::SINGLE_VALUE_METHODS - [:create_with]).each do |method|
assert_nil relation.send("#{method}_value"), method.to_s
end
assert_equal({}, relation.create_with_value)
end
def test_multi_value_initialize
relation = Relation.new FakeKlass, :b
Relation::MULTI_VALUE_METHODS.each do |method|
assert_equal [], relation.send("#{method}_values"), method.to_s
end
end
def test_extensions
relation = Relation.new FakeKlass, :b
assert_equal [], relation.extensions
end
def test_empty_where_values_hash
relation = Relation.new FakeKlass, :b
assert_equal({}, relation.where_values_hash)
relation.where! :hello
assert_equal({}, relation.where_values_hash)
end
def test_has_values
relation = Relation.new Post, Post.arel_table
relation.where! relation.table[:id].eq(10)
assert_equal({:id => 10}, relation.where_values_hash)
end
def test_values_wrong_table
relation = Relation.new Post, Post.arel_table
relation.where! Comment.arel_table[:id].eq(10)
assert_equal({}, relation.where_values_hash)
end
def test_tree_is_not_traversed
relation = Relation.new Post, Post.arel_table
left = relation.table[:id].eq(10)
right = relation.table[:id].eq(10)
combine = left.and right
relation.where! combine
assert_equal({}, relation.where_values_hash)
end
def test_table_name_delegates_to_klass
relation = Relation.new FakeKlass.new('posts'), :b
assert_equal 'posts', relation.table_name
end
def test_scope_for_create
relation = Relation.new FakeKlass, :b
assert_equal({}, relation.scope_for_create)
end
def test_create_with_value
relation = Relation.new Post, Post.arel_table
hash = { :hello => 'world' }
relation.create_with_value = hash
assert_equal hash, relation.scope_for_create
end
def test_create_with_value_with_wheres
relation = Relation.new Post, Post.arel_table
relation.where! relation.table[:id].eq(10)
relation.create_with_value = {:hello => 'world'}
assert_equal({:hello => 'world', :id => 10}, relation.scope_for_create)
end
# FIXME: is this really wanted or expected behavior?
def test_scope_for_create_is_cached
relation = Relation.new Post, Post.arel_table
assert_equal({}, relation.scope_for_create)
relation.where! relation.table[:id].eq(10)
assert_equal({}, relation.scope_for_create)
relation.create_with_value = {:hello => 'world'}
assert_equal({}, relation.scope_for_create)
end
def test_bad_constants_raise_errors
assert_raises(NameError) do
ActiveRecord::Relation::HelloWorld
end
end
def test_empty_eager_loading?
relation = Relation.new FakeKlass, :b
assert !relation.eager_loading?
end
def test_eager_load_values
relation = Relation.new FakeKlass, :b
relation.eager_load! :b
assert relation.eager_loading?
end
def test_references_values
relation = Relation.new FakeKlass, :b
assert_equal [], relation.references_values
relation = relation.references(:foo).references(:omg, :lol)
assert_equal ['foo', 'omg', 'lol'], relation.references_values
end
def test_references_values_dont_duplicate
relation = Relation.new FakeKlass, :b
relation = relation.references(:foo).references(:foo)
assert_equal ['foo'], relation.references_values
end
test 'merging a hash into a relation' do
relation = Relation.new FakeKlass, :b
relation = relation.merge where: :lol, readonly: true
assert_equal [:lol], relation.where_values
assert_equal true, relation.readonly_value
end
test 'merging an empty hash into a relation' do
assert_equal [], Relation.new(FakeKlass, :b).merge({}).where_values
end
test 'merging a hash with unknown keys raises' do
assert_raises(ArgumentError) { Relation::HashMerger.new(nil, omg: 'lol') }
end
test '#values returns a dup of the values' do
relation = Relation.new(FakeKlass, :b).where! :foo
values = relation.values
values[:where] = nil
assert_not_nil relation.where_values
end
test 'relations can be created with a values hash' do
relation = Relation.new(FakeKlass, :b, where: [:foo])
assert_equal [:foo], relation.where_values
end
test 'merging a single where value' do
relation = Relation.new(FakeKlass, :b)
relation.merge!(where: :foo)
assert_equal [:foo], relation.where_values
end
test 'merging a hash interpolates conditions' do
klass = Class.new(FakeKlass) do
def self.sanitize_sql(args)
raise unless args == ['foo = ?', 'bar']
'foo = bar'
end
end
relation = Relation.new(klass, :b)
relation.merge!(where: ['foo = ?', 'bar'])
assert_equal ['foo = bar'], relation.where_values
end
def test_merging_readonly_false
relation = Relation.new FakeKlass, :b
readonly_false_relation = relation.readonly(false)
# test merging in both directions
assert_equal false, relation.merge(readonly_false_relation).readonly_value
assert_equal false, readonly_false_relation.merge(relation).readonly_value
end
def test_relation_merging_with_merged_joins_as_symbols
special_comments_with_ratings = SpecialComment.joins(:ratings)
posts_with_special_comments_with_ratings = Post.group("posts.id").joins(:special_comments).merge(special_comments_with_ratings)
assert_equal 3, authors(:david).posts.merge(posts_with_special_comments_with_ratings).count.length
end
def test_relation_merging_with_joins_as_join_dependency_pick_proper_parent
post = Post.create!(title: "haha", body: "huhu")
comment = post.comments.create!(body: "hu")
3.times { comment.ratings.create! }
relation = Post.joins(:comments).merge Comment.joins(:ratings)
assert_equal 3, relation.where(id: post.id).pluck(:id).size
end
def test_respond_to_for_non_selected_element
post = Post.select(:title).first
assert_equal false, post.respond_to?(:body), "post should not respond_to?(:body) since invoking it raises exception"
silence_warnings { post = Post.select("'title' as post_title").first }
assert_equal false, post.respond_to?(:title), "post should not respond_to?(:body) since invoking it raises exception"
end
def test_relation_merging_with_merged_joins_as_strings
join_string = "LEFT OUTER JOIN #{Rating.quoted_table_name} ON #{SpecialComment.quoted_table_name}.id = #{Rating.quoted_table_name}.comment_id"
special_comments_with_ratings = SpecialComment.joins join_string
posts_with_special_comments_with_ratings = Post.group("posts.id").joins(:special_comments).merge(special_comments_with_ratings)
assert_equal 3, authors(:david).posts.merge(posts_with_special_comments_with_ratings).count.length
end
end
end
|
