require File.expand_path('spec/spec_helper')
require 'neo4j'
require './lib/geoff/neo4j_wrapper_dsl'

describe Neo4jWrapperDsl do
  let(:expected_geoff) do
    strip_whitespace <<-EOS
      (ROOT)-[:Sandwich]->(Sandwich)
      (ROOT)-[:Cheese]->(Cheese)
      (ROOT)-[:Egg]->(Egg)
    EOS
  end

  class Sandwich
    include Neo4j::NodeMixin
  end

  class Cafe
    include Neo4j::NodeMixin
  end

  class Branch
    include Neo4j::NodeMixin
  end


  class Cheese
    include Neo4j::NodeMixin
  end

  class Egg
    include Neo4j::NodeMixin
  end


  describe "#to_s" do
    specify do
      dsl = Neo4jWrapperDsl.new Sandwich, Cheese, Egg
      dsl.to_s.should == dsl.to_geoff
    end
  end

  describe "#to_geoff" do
    it "outputs root node geoff syntax" do
      dsl = Neo4jWrapperDsl.new(Sandwich, Cheese, Egg)
      dsl.to_geoff.should == expected_geoff
    end

    specify do
      ->{Neo4jWrapperDsl.new 2 }  .should raise_error ArgumentError
      ->{Neo4jWrapperDsl.new '' } .should raise_error ArgumentError
      ->{Neo4jWrapperDsl.new ['']}.should raise_error ArgumentError
      ->{Neo4jWrapperDsl.new [1]} .should raise_error ArgumentError

      ->{Neo4jWrapperDsl.new(Egg)}.should_not raise_error ArgumentError
    end


    context "with a block" do
      let(:expected) {
        strip_whitespace <<-EOS
        (ROOT)-[:Cafe]->(Cafe)
        (ROOT)-[:Branch]->(Branch)
        (Starbucks) {"_classname":"Cafe"}
        (Cafe)-[:all]->(Starbucks)
        (starbucks_branch) {"_classname":"Branch"}
        (Branch)-[:all]->(starbucks_branch)
        (Starbucks)-[:owns]->(starbucks_branch)
        EOS
      }

      specify "with parent node is root node, but no relationship,
      don't create relationship to root node" do
        Neo4jWrapperDsl.new(Cafe, Branch) do
          cafe 'Starbucks' do
            children 'owns' do
              #create relationship to parent node of type owns (comes from children DSL)
              branch 'starbucks_branch'
            end
          end

        end.to_geoff.should == expected
      end
    end
  end
end