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Contents
require_relative '../../spec_helper'
require_relative '../../../lib/rley/syntax/non_terminal'
# Load the class under test
require_relative '../../../lib/rley/gfg/shortcut_edge'
module Rley # Open this namespace to avoid module qualifier prefixes
module GFG # Open this namespace to avoid module qualifier prefixes
describe Edge do
let(:nt_b_sequence) { Rley::Syntax::NonTerminal.new('b_sequence') }
let(:vertex1) { double('fake_vertex1') }
let(:vertex2) { double('fake_vertex2') }
subject { ShortcutEdge.new(vertex1, vertex2) }
context 'Initialization:' do
it 'should be created with two vertice arguments & a non-terminal' do
expect(vertex1).to receive(:shortcut=)
expect(vertex1).to receive(:next_symbol).and_return(nt_b_sequence)
expect { ShortcutEdge.new(vertex1, vertex2) }
.not_to raise_error
end
it 'should know the successor vertex' do
expect(vertex1).to receive(:shortcut=)
expect(vertex1).to receive(:next_symbol).and_return(nt_b_sequence)
expect(subject.successor).to eq(vertex2)
end
it 'should know the related terminal' do
expect(vertex1).to receive(:shortcut=)
expect(vertex1).to receive(:next_symbol).and_return(nt_b_sequence)
expect(subject.nonterminal).to eq(nt_b_sequence)
end
end # context
end # describe
end # module
end # module
# End of file
Version data entries
46 entries across 46 versions & 1 rubygems