Contents

require 'spec_helper'
module Gisele::Language
  describe AST do

    describe 'ast' do

      it 'returns a node' do
        node = [:unit_def].extend(AST::Node)
        AST.node(node).object_id.should eq(node.object_id)
      end

      it 'coerces an array' do
        AST.node([:unit_def]).should eq([:unit_def])
        AST.node([:unit_def]).should be_a(AST::UnitDef)
      end

      it 'falls back to Node' do
        AST.node([:nosuchnode]).should eq([:nosuchnode])
        AST.node([:nosuchnode]).should be_a(AST::Node)
      end

      it 'applies coercions recursively' do
        source = [:unit_def, [:hello, "world"]]
        AST.node(source).should eq(source)
        AST.node(source).last.should be_a(AST::Node)
      end

      it 'raises unless a ast node array' do
        lambda{ AST.node("foo") }.should raise_error(ArgumentError, /foo/)
        lambda{ AST.node(nil) }.should raise_error(ArgumentError, /nil/)
        lambda{ AST.node([]) }.should raise_error(ArgumentError, /\[\]/)
        lambda{ AST.node(["foo"]) }.should raise_error(ArgumentError, /foo/)
      end

    end # .ast

  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
gisele-0.4.0	spec/unit/language/test_ast.rb
gisele-0.3.0	spec/unit/language/test_ast.rb