Add visitor pattern to crafting nodes

2015-08-28 19:16:12 -07:00
parent badb854107
commit f6b71c9464
7 changed files with 203 additions and 91 deletions
@@ -0,0 +1,44 @@
+###
+Crafting Node - crafting_node.test.coffee
+
+Copyright (c) 2015 by Redwood Labs
+All rights reserved.
+###
+
+fixtures = require './fixtures'
+
+########################################################################################################################
+
+root = null
+
+########################################################################################################################
+
+describe 'crafting_node.coffee', ->
+
+    describe 'acceptVisitor', ->
+
+        it 'can provide a prefix, depth-first traversal', ->
+            root = fixtures.makeTree 'test__iron_ingot'
+
+            visitor =
+                nodes: []
+                onEnterOtherNode: (node)-> visitor.nodes.push node
+
+            root.acceptVisitor visitor
+
+            (v.constructor.name.replace('Node', '') for v in visitor.nodes).should.eql [
+                "Inventory", "Item", "Recipe", "Item", "Item", "Recipe", "Item", "Item", "Recipe", "Item", "Item"
+            ]
+
+        it 'can provide a postfix, depth-first traversal', ->
+            root = fixtures.makeTree 'test__iron_ingot'
+
+            visitor =
+                nodes: []
+                onLeaveOtherNode: (node)-> visitor.nodes.push node
+
+            root.acceptVisitor visitor
+
+            (n.constructor.name.replace('Node', '') for n in visitor.nodes).should.eql [
+                "Item", "Item", "Item", "Recipe", "Item", "Recipe", "Item", "Item", "Recipe", "Item", "Inventory"
+            ]