Contents

require_relative '../../spec_helper'

# Load the class under test
require_relative '../../../lib/rley/gfg/vertex'

module Rley # Open this namespace to avoid module qualifier prefixes
  module GFG # Open this namespace to avoid module qualifier prefixes
    describe Vertex do
      subject { Vertex.new() }

      context 'Initialization:' do
        it 'should be created without argument' do
          expect { Vertex.new() }.not_to raise_error
        end

        it "shouldn't have edges at start" do
          expect(subject.edges.empty?).to eq(true)
        end
      end # context

      context 'Provided services:' do
        it 'should know whether it has a dot at the end of the rhs' do
          expect(subject).not_to be_complete
        end
        
        it 'should know the previous symbol (if any) in the rhs' do
          expect(subject.prev_symbol).to be_nil
        end        

        it 'should know the next symbol (if any) in the rhs' do
          expect(subject.next_symbol).to be_nil
        end

        it 'should accept at most one new edge' do
          edge1 = double('fake-edge1')
          edge2 = double('fake-edge2')

          expect { subject.add_edge(edge1) }.not_to raise_error
          expect(subject.edges.size).to eq(1)
          expect(subject.edges.last).to eq(edge1)
          
          err = StandardError
          msg = 'At most one edge accepted'
          expect { subject.add_edge(edge2) }.to raise_error err, msg
          expect(subject.edges.size).to eq(1)
          expect(subject.edges.last).to eq(edge1)
        end
      end # context
    end # describe
  end # module
end # module

# End of file

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
rley-0.3.04	spec/rley/gfg/vertex_spec.rb
rley-0.3.01	spec/rley/gfg/vertex_spec.rb
rley-0.3.00	spec/rley/gfg/vertex_spec.rb