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Contents
# encoding: utf-8 require 'spec_helper' describe Algebra::Union, '#delete' do subject { object.delete(other) } let(:object) { described_class.new(left, right) } let(:left) { Relation.new(header, [[1], [2]]) } let(:right) { Relation.new(header, [[2], [3]]) } let(:other_relation) { Relation.new(header, [[2]]) } let(:header) { [[:id, Integer]] } shared_examples_for 'Algebra::Union#delete' do it { should be_instance_of(described_class) } its(:left) { should eql(left.delete(other)) } its(:right) { should eql(right.delete(other)) } its(:header) { should == header } it 'deletes the tuples' do should == [[1], [3]] end end context 'with a relation' do let(:other) { other_relation } it_should_behave_like 'Algebra::Union#delete' end context 'with an array of tuples' do let(:other) { other_relation.to_a } it_should_behave_like 'Algebra::Union#delete' end context 'with an array of arrays' do let(:other) { other_relation.map(&:to_ary) } it_should_behave_like 'Algebra::Union#delete' end end
Version data entries
2 entries across 2 versions & 1 rubygems
Version | Path |
---|---|
axiom-0.2.0 | spec/unit/axiom/algebra/union/delete_spec.rb |
axiom-0.1.1 | spec/unit/axiom/algebra/union/delete_spec.rb |