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Contents
require 'spec_helper'
module Alf
module Algebra
describe Join, 'heading' do
let(:left){
an_operand.with_heading(:id => Integer, :name => String)
}
let(:op){
a_lispy.intersect(left, right)
}
subject{ op.heading }
context 'when disjoint headings' do
let(:right){
an_operand.with_heading(:foo => String)
}
let(:expected){
Heading[:id => Integer, :name => String, :foo => String]
}
it { should eq(expected) }
end
context 'when non-disjoint headings' do
let(:right){
an_operand.with_heading(:id => Fixnum, :foo => String)
}
let(:expected){
Heading[:id => Integer, :name => String, :foo => String]
}
it { should eq(expected) }
end
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems