Contents

# encoding: utf-8

require 'spec_helper'

describe Algebra::Projection, '#eql?' do
  subject { object.eql?(other) }

  let(:body)       { [ [ 1, 'Dan Kubb' ], [ 2, 'Dan Kubb' ], [ 2, 'Alex Kubb'] ] }
  let(:operand)    { Relation.new([ [ :id, Integer ], [ :name, String ] ], body) }
  let(:attributes) { [ :id ]                                                     }
  let(:object)     { described_class.new(operand, attributes)                    }

  context 'with the same object' do
    let(:other) { object }

    it { should be(true) }

    it 'is symmetric' do
      should == other.eql?(object)
    end
  end

  context 'with an equivalent object' do
    let(:other) { object.dup }

    it { should be(true) }

    it 'is symmetric' do
      should == other.eql?(object)
    end
  end

  context 'with an equivalent object of a subclass' do
    let(:other) { Class.new(described_class).new(operand, attributes) }

    it { should be(false) }

    it 'is symmetric' do
      should == other.eql?(object)
    end
  end

  context 'with an object having a different operand' do
    let(:other_operand)    { Relation.new([ [ :id, Integer ] ], [ [ 3 ] ])        }
    let(:other_attributes) { attributes                                           }
    let(:other)            { described_class.new(other_operand, other_attributes) }

    it { should be(false) }

    it 'is symmetric' do
      should == other.eql?(object)
    end
  end

  context 'with an object having different attributes' do
    let(:other_operand)    { operand                                              }
    let(:other_attributes) { []                                                   }
    let(:other)            { described_class.new(other_operand, other_attributes) }

    it { should be(false) }

    it 'is symmetric' do
      should == other.eql?(object)
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
veritas-0.0.4	spec/unit/veritas/algebra/projection/eql_spec.rb