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require File.join(File.dirname(__FILE__), '..', '..', '..', 'spec_helper')
module ActiveRelation
describe Binary do
before do
@relation1 = Table.new(:users)
@relation2 = Table.new(:photos)
@attribute1 = @relation1[:id]
@attribute2 = @relation2[:id]
class ConcreteBinary < Binary
def predicate_sql
"<=>"
end
end
end
describe '==' do
it "obtains if attribute1 and attribute2 are identical" do
Binary.new(@attribute1, @attribute2).should == Binary.new(@attribute1, @attribute2)
Binary.new(@attribute1, @attribute2).should_not == Binary.new(@attribute1, @attribute1)
end
it "obtains if the concrete type of the Predicates::Binarys are identical" do
Binary.new(@attribute1, @attribute2).should == Binary.new(@attribute1, @attribute2)
Binary.new(@attribute1, @attribute2).should_not == ConcreteBinary.new(@attribute1, @attribute2)
end
end
describe '#qualify' do
it "descends" do
ConcreteBinary.new(@attribute1, @attribute2).qualify \
.should == ConcreteBinary.new(@attribute1, @attribute2).descend(&:qualify)
end
end
describe '#descend' do
it "distributes over the predicates and attributes" do
ConcreteBinary.new(@attribute1, @attribute2).descend(&:qualify). \
should == ConcreteBinary.new(@attribute1.qualify, @attribute2.qualify)
end
end
describe '#bind' do
it "distributes over the predicates and attributes" do
ConcreteBinary.new(@attribute1, @attribute2).bind(@relation2). \
should == ConcreteBinary.new(@attribute1.bind(@relation2), @attribute2.bind(@relation2))
end
end
describe '#to_sql' do
it 'manufactures sql with a binary operation' do
ConcreteBinary.new(@attribute1, @attribute2).to_sql.should be_like("
`users`.`id` <=> `photos`.`id`
")
end
it 'appropriately quotes scalars' do
ConcreteBinary.new(@attribute1, "1-asdf").to_sql.should be_like("
`users`.`id` <=> 1
")
end
end
end
end
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