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
|
require 'spec_helper'
module Arel
describe Table do
before do
@relation = Table.new(:users)
end
describe '#to_sql' do
it "manufactures a simple select query" do
sql = @relation.to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`
FROM `users`
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "USERS"."ID", "USERS"."NAME"
FROM "USERS"
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name"
FROM "users"
})
end
end
end
describe '#as' do
it "manufactures a simple select query using aliases" do
sql = @relation.as(:super_users).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `super_users`.`id`, `super_users`.`name`
FROM `users` `super_users`
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "SUPER_USERS"."ID", "SUPER_USERS"."NAME"
FROM "USERS" "SUPER_USERS"
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "super_users"."id", "super_users"."name"
FROM "users" "super_users"
})
end
end
it "does not apply alias if it's same as the table name" do
sql = @relation.as(:users).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`
FROM `users`
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "USERS"."ID", "USERS"."NAME"
FROM "USERS"
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name"
FROM "users"
})
end
end
end
describe '#column_for' do
it "returns the column corresponding to the attribute" do
@relation.column_for(@relation[:id]).should == @relation.columns.detect { |c| c.name == 'id' }
end
end
describe '#attributes' do
it 'manufactures attributes corresponding to columns in the table' do
@relation.attributes.should == [
Attribute.new(@relation, :id),
Attribute.new(@relation, :name)
]
end
describe '#reset' do
it "reloads columns from the database" do
lambda { @relation.engine.stub!(:columns => []) }.should_not change { @relation.attributes }
lambda { @relation.reset }.should change { @relation.attributes }
end
end
end
describe '#engine' do
it "defaults to global engine" do
Table.engine = engine = Sql::Engine.new
Table.new(:users).engine.should == engine
end
it "can be specified" do
Table.new(:users, engine = Sql::Engine.new).engine.should == engine
end
end
end
end
|
