Added first attempt at bounding box support in changesets and tests for the same.

test/unit/way_test.rb

@@ -0,0 +1,16 @@
+require File.dirname(__FILE__) + '/../test_helper'
+
+class WayTest < Test::Unit::TestCase
+  api_fixtures
+
+  def test_bbox
+    node = current_nodes(:used_node_1)
+    [ :visible_way,
+      :invisible_way,
+      :used_way ].each do |way_symbol|
+      way = current_ways(way_symbol)
+      assert_equal node.bbox, way.bbox
+    end
+  end
+  
+end