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
|
require "cases/helper"
require "models/book"
require "models/liquid"
require "models/molecule"
require "models/electron"
module ActiveRecord
class StatementCacheTest < ActiveRecord::TestCase
def setup
@connection = ActiveRecord::Base.connection
end
#Cache v 1.1 tests
def test_statement_cache
Book.create(name: "my book")
Book.create(name: "my other book")
cache = StatementCache.create(Book.connection) do |params|
Book.where(name: params.bind)
end
b = cache.execute([ "my book" ], Book, Book.connection)
assert_equal "my book", b[0].name
b = cache.execute([ "my other book" ], Book, Book.connection)
assert_equal "my other book", b[0].name
end
def test_statement_cache_id
b1 = Book.create(name: "my book")
b2 = Book.create(name: "my other book")
cache = StatementCache.create(Book.connection) do |params|
Book.where(id: params.bind)
end
b = cache.execute([ b1.id ], Book, Book.connection)
assert_equal b1.name, b[0].name
b = cache.execute([ b2.id ], Book, Book.connection)
assert_equal b2.name, b[0].name
end
def test_find_or_create_by
Book.create(name: "my book")
a = Book.find_or_create_by(name: "my book")
b = Book.find_or_create_by(name: "my other book")
assert_equal("my book", a.name)
assert_equal("my other book", b.name)
end
#End
def test_statement_cache_with_simple_statement
cache = ActiveRecord::StatementCache.create(Book.connection) do |params|
Book.where(name: "my book").where("author_id > 3")
end
Book.create(name: "my book", author_id: 4)
books = cache.execute([], Book, Book.connection)
assert_equal "my book", books[0].name
end
def test_statement_cache_with_complex_statement
cache = ActiveRecord::StatementCache.create(Book.connection) do |params|
Liquid.joins(molecules: :electrons).where("molecules.name" => "dioxane", "electrons.name" => "lepton")
end
salty = Liquid.create(name: "salty")
molecule = salty.molecules.create(name: "dioxane")
molecule.electrons.create(name: "lepton")
liquids = cache.execute([], Book, Book.connection)
assert_equal "salty", liquids[0].name
end
def test_statement_cache_values_differ
cache = ActiveRecord::StatementCache.create(Book.connection) do |params|
Book.where(name: "my book")
end
3.times do
Book.create(name: "my book")
end
first_books = cache.execute([], Book, Book.connection)
3.times do
Book.create(name: "my book")
end
additional_books = cache.execute([], Book, Book.connection)
assert first_books != additional_books
end
def test_unprepared_statements_dont_share_a_cache_with_prepared_statements
Book.create(name: "my book")
Book.create(name: "my other book")
book = Book.find_by(name: "my book")
other_book = Book.connection.unprepared_statement do
Book.find_by(name: "my other book")
end
refute_equal book, other_book
end
def test_find_by_does_not_use_statement_cache_if_table_name_is_changed
book = Book.create(name: "my book")
Book.find_by(name: book.name) # warming the statement cache.
# changing the table name should change the query that is not cached.
Book.table_name = :birds
assert_nil Book.find_by(name: book.name)
ensure
Book.table_name = :books
end
def test_find_does_not_use_statement_cache_if_table_name_is_changed
book = Book.create(name: "my book")
Book.find(book.id) # warming the statement cache.
# changing the table name should change the query that is not cached.
Book.table_name = :birds
assert_raise ActiveRecord::RecordNotFound do
Book.find(book.id)
end
ensure
Book.table_name = :books
end
end
end
|
