blob: 4287baaf14d14c1ab123cbc2cfd003bf1f83a2b6 (
plain) (
blame)
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
|
require 'helper'
module Arel
module Visitors
describe 'the postgres visitor' do
before do
@visitor = PostgreSQL.new Table.engine.connection
@table = Table.new(:users)
@attr = @table[:id]
end
describe 'locking' do
it 'defaults to FOR UPDATE' do
@visitor.accept(Nodes::Lock.new(Arel.sql('FOR UPDATE'))).must_be_like %{
FOR UPDATE
}
end
it 'allows a custom string to be used as a lock' do
node = Nodes::Lock.new(Arel.sql('FOR SHARE'))
@visitor.accept(node).must_be_like %{
FOR SHARE
}
end
end
it "should escape LIMIT" do
sc = Arel::Nodes::SelectStatement.new
sc.limit = Nodes::Limit.new(Nodes.build_quoted("omg"))
sc.cores.first.projections << Arel.sql('DISTINCT ON')
sc.orders << Arel.sql("xyz")
sql = @visitor.accept(sc)
assert_match(/LIMIT 'omg'/, sql)
assert_equal 1, sql.scan(/LIMIT/).length, 'should have one limit'
end
it 'should support DISTINCT ON' do
core = Arel::Nodes::SelectCore.new
core.set_quantifier = Arel::Nodes::DistinctOn.new(Arel.sql('aaron'))
assert_match 'DISTINCT ON ( aaron )', @visitor.accept(core)
end
it 'should support DISTINCT' do
core = Arel::Nodes::SelectCore.new
core.set_quantifier = Arel::Nodes::Distinct.new
assert_equal 'SELECT DISTINCT', @visitor.accept(core)
end
describe "Nodes::Matches" do
it "should know how to visit" do
node = @table[:name].matches('foo%')
@visitor.accept(node).must_be_like %{
"users"."name" ILIKE 'foo%'
}
end
it 'can handle subqueries' do
subquery = @table.project(:id).where(@table[:name].matches('foo%'))
node = @attr.in subquery
@visitor.accept(node).must_be_like %{
"users"."id" IN (SELECT id FROM "users" WHERE "users"."name" ILIKE 'foo%')
}
end
end
describe "Nodes::DoesNotMatch" do
it "should know how to visit" do
node = @table[:name].does_not_match('foo%')
@visitor.accept(node).must_be_like %{
"users"."name" NOT ILIKE 'foo%'
}
end
it 'can handle subqueries' do
subquery = @table.project(:id).where(@table[:name].does_not_match('foo%'))
node = @attr.in subquery
@visitor.accept(node).must_be_like %{
"users"."id" IN (SELECT id FROM "users" WHERE "users"."name" NOT ILIKE 'foo%')
}
end
end
end
end
end
|
