Contents

# frozen_string_literal: true

require_relative '../spec_helper' # Use the RSpec framework
require 'stringio'

# Load the class under test
require_relative '../../lib/loxxy/back_end/engine'

module Loxxy
  module BackEnd
    describe Engine do
      let(:sample_options) do
        { ostream: StringIO.new }
      end
      subject { Engine.new(sample_options) }

      context 'Initialization:' do
        it 'should accept a option Hash at initialization' do
          expect { Engine.new(sample_options) }.not_to raise_error
        end

        it 'should know its config options' do
          expect(subject.config).to eq(sample_options)
        end

        it 'should have an empty stack' do
          expect(subject.stack).to be_empty
        end
      end

      context 'Listening to visitor events:' do
        let(:greeting) { Datatype::LXString.new('Hello, world') }
        let(:sample_pos) { double('fake-position') }
        let(:lit_expr) { Ast::LoxLiteralExpr.new(sample_pos, greeting) }

        it "should react to 'before_literal_expr' event" do
          expect { subject.before_literal_expr(lit_expr) }.not_to raise_error
          expect(subject.stack.pop).to eq(greeting)
        end
      end
    end # describe
  end # module
end # module

Version data entries

9 entries across 9 versions & 1 rubygems

Version	Path
loxxy-0.0.20	spec/back_end/engine_spec.rb
loxxy-0.0.19	spec/back_end/engine_spec.rb
loxxy-0.0.18	spec/back_end/engine_spec.rb
loxxy-0.0.17	spec/back_end/engine_spec.rb
loxxy-0.0.16	spec/back_end/engine_spec.rb
loxxy-0.0.15	spec/back_end/engine_spec.rb
loxxy-0.0.14	spec/back_end/engine_spec.rb
loxxy-0.0.13	spec/back_end/engine_spec.rb
loxxy-0.0.12	spec/back_end/engine_spec.rb