Contents

require 'spec_helper'

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

  let(:klass)     { Algebra::Restriction                          }
  let(:operand)   { Relation.new([ [ :id, Integer ] ], [ [ 1 ] ]) }
  let(:predicate) { proc { true }                                 }
  let(:object)    { klass.new(operand, predicate)                 }

  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(klass).new(operand, predicate) }

    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 ] ], [ [ 2 ] ]) }
    let(:other_predicate) { predicate                                     }
    let(:other)           { klass.new(other_operand, other_predicate)     }

    it { should be(false) }

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

  context 'with an object having a different predicate' do
    let(:other_operand)   { operand                                   }
    let(:other_predicate) { proc { false }                            }
    let(:other)           { klass.new(other_operand, other_predicate) }

    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-0.0.2	spec/unit/veritas/algebra/restriction/eql_spec.rb