add basic tests for Rickshaw.Class

tests/Rickshaw.Class.js

@@ -0,0 +1,53 @@
+require('../src/js/Rickshaw');
+require('../src/js/Rickshaw.Class');
+
+exports.load = function(test) {
+
+	test.equal(typeof Rickshaw.Class, 'object', 'Rickshaw.Class is a function');
+	test.done();
+};
+
+exports.instantiation = function(test) {
+
+	Rickshaw.namespace('Rickshaw.Sample.Class');
+
+	Rickshaw.Sample.Class = Rickshaw.Class.create({
+		name: 'sample',
+		concat: function(suffix) {
+			return [this.name, suffix].join(' ');
+		}
+	});
+
+	var sample = new Rickshaw.Sample.Class();
+	test.equal(sample.concat('polka'), 'sample polka');
+
+	Rickshaw.namespace('Rickshaw.Sample.Class.Prefix');
+
+	Rickshaw.Sample.Subclass = Rickshaw.Class.create( Rickshaw.Sample.Class, {
+		name: 'sampler',
+	});
+
+	var sampler = new Rickshaw.Sample.Subclass();
+	test.equal(sampler.concat('polka'), 'sampler polka');
+
+	test.done();
+};
+
+exports.array = function(test) {
+
+	Rickshaw.namespace('Rickshaw.Sample.Array');
+
+	Rickshaw.Sample.Array = Rickshaw.Class.create(Array, {
+		second: function() {
+			return this[1];
+		}
+	});
+
+	var array = new Rickshaw.Sample.Array();
+	array.push('red');
+	array.push('blue');
+
+	test.equal(array.second(), 'blue');
+
+	test.done();
+};