more rigorous tests regarding fn expressions

test/expressions.mocha.js

@@ -35,6 +35,9 @@ var controller = {
 controller.model = {
  data: {
  key: 'green'
+ , Math: {
+ abs: "not a function"
+ }
  , _page: {
  colors: {
  green: {
@@ -273,11 +276,19 @@ describe('Expression::get', function() {
  expect(expression.get(context)).to.be.a(Error);
  });
 
- // None of these are supported yet, but ideally they would be
  it('gets method call of the result of an fn expressions', function() {
  var expression = create('(_page.date).valueOf()');
  expect(expression.get(context)).to.equal(1000);
  });
+
+ it('gets the correct method even in case of duplicate paths', function() {
+ var expression = create('Math.abs(-5)');
+ expect(expression.get(context)).to.equal(5);
+ expression = create('Math.abs');
+ expect(expression.get(context)).to.equal('not a function');
+ });
+
+ // None of these are supported yet, but ideally they would be
  it.skip('gets method call of the result of an fn expressions', function() {
  var expression = create('passThrough(_page.date).valueOf()');
  expect(expression.get(context)).to.equal(1000);