blob: db30198f6ec3b5181a740ec1f09977255f464585 (
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
|
require File.join(File.dirname(__FILE__), '..', 'spec_helper')
describe 'between two relations' do
before do
@relation1 = TableRelation.new(:foo)
@relation2 = TableRelation.new(:bar)
end
describe '==' do
it "obtains if the relations of both joins are identical" do
JoinOperation.new(@relation1, @relation2).should == JoinOperation.new(@relation1, @relation2)
JoinOperation.new(@relation1, @relation2).should_not == JoinOperation.new(@relation1, @relation1)
end
it "is commutative on the relations" do
JoinOperation.new(@relation1, @relation2).should == JoinOperation.new(@relation2, @relation1)
end
end
describe 'on' do
before do
@predicate = Predicate.new
@join_operation = JoinOperation.new(@relation1, @relation2)
class << @join_operation
def relation_class
JoinRelation
end
end
end
it "manufactures a join relation of the appropriate type" do
@join_operation.on(@predicate).should == JoinRelation.new(@relation1, @relation2, @predicate)
end
end
end
|