added paragraph styles

ts/tests/attributeTest.ts

@@ -0,0 +1,29 @@
+/// <reference path="../typings/mocha/mocha.d.ts" />
+/// <reference path="../typings/chai/chai.d.ts" />
+import {Attributes} from "../docx/xml-components/p";
+import {assert} from "chai";
+
+describe('Attribute', () => {
+    var attributes: Attributes;
+
+    beforeEach(() => {
+        attributes = new Attributes();
+    });
+
+    describe('#constructor()', () => {
+
+        it("should not add val with empty constructor", () => {
+            var newAttrs = new Attributes();
+            var stringifiedJson = JSON.stringify(newAttrs);
+            var newJson = JSON.parse(stringifiedJson);
+            assert.isUndefined(newJson._attrs.val);
+        });
+
+        it("should have val as defined with populated constructor", () => {
+            var newAttrs = new Attributes("test");
+            var stringifiedJson = JSON.stringify(newAttrs);
+            var newJson = JSON.parse(stringifiedJson);
+            assert(newJson._attrs.val === "test");
+        });
+    });
+});