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Contents
require 'spec_helper'
module Alf
module Operator
describe Signature, "#collect_on" do
subject{ op.class.signature.collect_on(op) }
let(:operands) { subject[0] }
let(:arguments) { subject[1] }
let(:options) { subject[2] }
describe "on a nullary op" do
let(:op){ NonRelational::Generator.new([], 10, :id) }
specify {
subject.should eq([[], [10, :id], {}])
}
end
describe "on a monadic op, with one arg" do
let(:op){ NonRelational::Autonum.new([:suppliers], :id) }
it{ should eq([ [:suppliers], [:id], {} ]) }
end
describe "on a monadic op, with one arg and an option" do
let(:op){
Relational::Project.new([:suppliers], [:name, :city], :allbut => true)
}
it{ should eq([[:suppliers], [AttrList[:name, :city]], {:allbut => true}]) }
end
describe "on a dyadic op" do
let(:op){ Relational::Join.new([:suppliers, :cities]) }
it{ should eq([[:suppliers, :cities], [], {}]) }
end
end
end # module Operator
end # module Alf
Version data entries
5 entries across 5 versions & 1 rubygems