Initial parsing tests

test/spec/ol/expression/parser.test.js

@@ -0,0 +1,35 @@
+goog.provide('ol.test.expression');
+
+describe('ol.expression.Parser', function() {
+
+  describe('constructor', function() {
+    it('creates a new expression parser', function() {
+      var parser = new ol.expression.Parser();
+      expect(parser).to.be.a(ol.expression.Parser);
+    });
+  });
+
+  describe('#parseGroupExpression_()', function() {
+
+    function parse(source) {
+      var lexer = new ol.expression.Lexer(source);
+      var parser = new ol.expression.Parser();
+      return parser.parseGroupExpression_(lexer);
+    }
+
+    it('parses grouped expressions', function() {
+      var expr = parse('(3 * (foo + 2))');
+      expect(expr).to.be.a(ol.expression.Expression);
+      expect(expr).to.be.a(ol.expression.Math);
+      expect(expr.evaluate({foo: 3})).to.be(15);
+    });
+
+  });
+
+});
+
+
+goog.require('ol.expression.Expression');
+goog.require('ol.expression.Lexer');
+goog.require('ol.expression.Math');
+goog.require('ol.expression.Parser');