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Contents
require_relative '../../spec_helper'
require_relative '../support/grammar_abc_helper'
# Load the module under test
require_relative '../../../lib/rley/base/grm_items_builder'
module Rley # Open this namespace to avoid module qualifier prefixes
module Base # Open this namespace to avoid module qualifier prefixes
describe 'Testing GrmItemsBuilder' do
include GrmItemsBuilder # Use mix-in to test
include GrammarABCHelper # Mix-in module with builder for grammar abc
# Factory method. Build a production with the given sequence
# of symbols as its rhs.
let(:grammar_abc) do
builder = grammar_abc_builder
builder.grammar
end
context 'Builder pattern behaviour' do
it 'should create dotted items for a grammar' do
# Next line calls method from mixin module under test
items = build_dotted_items(grammar_abc)
expect(items.size).to eq(8)
expectations = [
'S => . A',
'S => A .',
'A => . a A c',
'A => a . A c',
'A => a A . c',
'A => a A c .',
'A => . b',
'A => b .'
]
expect(items.map(&:to_s)).to eq(expectations)
end
end
end # describe
end # module
end # module
# End of file
Version data entries
10 entries across 10 versions & 1 rubygems