function initRhinoTest() { process = { title: 'dummy' }; less.tree.functions.add = function (a, b) { return new(less.tree.Dimension)(a.value + b.value); }; less.tree.functions.increment = function (a) { return new(less.tree.Dimension)(a.value + 1); }; less.tree.functions._color = function (str) { if (str.value === "evil red") { return new(less.tree.Color)("600"); } }; } initRhinoTest();