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
|
# frozen_string_literal: true
require "cases/helper"
require "models/computer"
require "models/developer"
require "models/project"
require "models/topic"
require "models/post"
require "models/comment"
module ActiveRecord
class CollectionCacheKeyTest < ActiveRecord::TestCase
fixtures :developers, :projects, :developers_projects, :topics, :comments, :posts
test "collection_cache_key on model" do
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, Developer.collection_cache_key)
end
test "cache_key for relation" do
developers = Developer.where(salary: 100000).order(updated_at: :desc)
last_developer_timestamp = developers.first.updated_at
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key)
/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/ =~ developers.cache_key
assert_equal ActiveSupport::Digest.hexdigest(developers.to_sql), $1
assert_equal developers.count.to_s, $2
assert_equal last_developer_timestamp.to_s(ActiveRecord::Base.cache_timestamp_format), $3
end
test "cache_key for relation with limit" do
developers = Developer.where(salary: 100000).order(updated_at: :desc).limit(5)
last_developer_timestamp = developers.first.updated_at
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key)
/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/ =~ developers.cache_key
assert_equal ActiveSupport::Digest.hexdigest(developers.to_sql), $1
assert_equal developers.count.to_s, $2
assert_equal last_developer_timestamp.to_s(ActiveRecord::Base.cache_timestamp_format), $3
end
test "cache_key for relation with custom select and limit" do
developers = Developer.where(salary: 100000).order(updated_at: :desc).limit(5)
developers_with_select = developers.select("developers.*")
last_developer_timestamp = developers.first.updated_at
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers_with_select.cache_key)
/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/ =~ developers_with_select.cache_key
assert_equal ActiveSupport::Digest.hexdigest(developers_with_select.to_sql), $1
assert_equal developers.count.to_s, $2
assert_equal last_developer_timestamp.to_s(ActiveRecord::Base.cache_timestamp_format), $3
end
test "cache_key for loaded relation" do
developers = Developer.where(salary: 100000).order(updated_at: :desc).limit(5).load
last_developer_timestamp = developers.first.updated_at
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key)
/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/ =~ developers.cache_key
assert_equal ActiveSupport::Digest.hexdigest(developers.to_sql), $1
assert_equal developers.count.to_s, $2
assert_equal last_developer_timestamp.to_s(ActiveRecord::Base.cache_timestamp_format), $3
end
test "cache_key for relation with table alias" do
table_alias = Developer.arel_table.alias("omg_developers")
table_metadata = ActiveRecord::TableMetadata.new(Developer, table_alias)
predicate_builder = ActiveRecord::PredicateBuilder.new(table_metadata)
developers = ActiveRecord::Relation.create(
Developer,
table: table_alias,
predicate_builder: predicate_builder
)
developers = developers.where(salary: 100000).order(updated_at: :desc)
last_developer_timestamp = developers.first.updated_at
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key)
/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/ =~ developers.cache_key
assert_equal ActiveSupport::Digest.hexdigest(developers.to_sql), $1
assert_equal developers.count.to_s, $2
assert_equal last_developer_timestamp.to_s(ActiveRecord::Base.cache_timestamp_format), $3
end
test "cache_key for relation with includes" do
comments = Comment.includes(:post).where("posts.type": "Post")
assert_match(/\Acomments\/query-(\h+)-(\d+)-(\d+)\z/, comments.cache_key)
end
test "cache_key for loaded relation with includes" do
comments = Comment.includes(:post).where("posts.type": "Post").load
assert_match(/\Acomments\/query-(\h+)-(\d+)-(\d+)\z/, comments.cache_key)
end
test "it triggers at most one query" do
developers = Developer.where(name: "David")
assert_queries(1) { developers.cache_key }
assert_no_queries { developers.cache_key }
end
test "it doesn't trigger any query if the relation is already loaded" do
developers = Developer.where(name: "David").load
assert_no_queries { developers.cache_key }
end
test "relation cache_key changes when the sql query changes" do
developers = Developer.where(name: "David")
other_relation = Developer.where(name: "David").where("1 = 1")
assert_not_equal developers.cache_key, other_relation.cache_key
end
test "cache_key for empty relation" do
developers = Developer.where(name: "Non Existent Developer")
assert_match(/\Adevelopers\/query-(\h+)-0\z/, developers.cache_key)
end
test "cache_key with custom timestamp column" do
topics = Topic.where("title like ?", "%Topic%")
last_topic_timestamp = topics(:fifth).written_on.utc.to_s(:usec)
assert_match(last_topic_timestamp, topics.cache_key(:written_on))
end
test "cache_key with unknown timestamp column" do
topics = Topic.where("title like ?", "%Topic%")
assert_raises(ActiveRecord::StatementInvalid) { topics.cache_key(:published_at) }
end
test "collection proxy provides a cache_key" do
developers = projects(:active_record).developers
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key)
end
test "cache_key for loaded collection with zero size" do
Comment.delete_all
posts = Post.includes(:comments)
empty_loaded_collection = posts.first.comments
assert_match(/\Acomments\/query-(\h+)-0\z/, empty_loaded_collection.cache_key)
end
test "cache_key for queries with offset which return 0 rows" do
developers = Developer.offset(20)
assert_match(/\Adevelopers\/query-(\h+)-0\z/, developers.cache_key)
end
test "cache_key with a relation having selected columns" do
developers = Developer.select(:salary)
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key)
end
test "cache_key with a relation having distinct and order" do
developers = Developer.distinct.order(:salary).limit(5)
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key)
end
test "cache_key with a relation having custom select and order" do
developers = Developer.select("name AS dev_name").order("dev_name DESC").limit(5)
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key)
end
end
end
|
