added different types of underline

ts/tests/docx/run/runTest.ts

@@ -10,7 +10,7 @@ function jsonify(obj: Object) {
     return JSON.parse(stringifiedJson);
 }
 
-describe.only("Run", () => {
+describe("Run", () => {
     let run: Run;
 
     beforeEach(() => {

ts/tests/docx/run/underlineTests.ts

@@ -0,0 +1,37 @@
+import * as u from "../../../docx/run/underline";
+import {TextRun} from "../../../docx/run/text-run";
+import {assert} from "chai";
+
+function jsonify(obj: Object) {
+    let stringifiedJson = JSON.stringify(obj);
+    return JSON.parse(stringifiedJson);
+}
+
+describe.only("Underline", () => {
+
+    describe("#constructor()", () => {
+
+        it("should create a new Underline object", () => {
+            let underline = new u.Underline();
+            let newJson = jsonify(underline);
+            assert.equal(newJson.rootKey, "w:u");
+        });
+    });
+});
+
+describe.only("Underline", () => {
+
+    describe("#constructor()", () => {
+        it("should create a new Underline object", () => {
+            let underline = new u.DashDotDotHeavyUnderline();
+            let newJson = jsonify(underline);
+            assert.equal(newJson.rootKey, "w:u");
+        });
+
+                it("should put value in attribute", () => {
+            let underline = new u.DashDotDotHeavyUnderline();
+            let newJson = jsonify(underline);
+            assert.equal(newJson.rootKey, "w:u");
+        });
+    });
+});