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require File.join(File.dirname(__FILE__), '..', '..', '..', '..', 'spec_helper')
module Arel
describe Project do
before do
@relation = Table.new(:users)
@attribute = @relation[:id]
end
describe '#attributes' do
before do
@projection = Project.new(@relation, @attribute)
end
it "manufactures attributes associated with the projection relation" do
@projection.attributes.should == [@attribute].collect { |a| a.bind(@projection) }
end
end
describe '#externalizable?' do
describe 'when the projections are attributes' do
it 'returns false' do
Project.new(@relation, @attribute).should_not be_externalizable
end
end
describe 'when the projections include an aggregation' do
it "obtains" do
Project.new(@relation, @attribute.sum).should be_externalizable
end
end
end
end
end
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