Add Convenience functions

src/convenience-functions.spec.ts

@@ -0,0 +1,18 @@
+import { expect } from "chai";
+import { convertInchesToTwip, convertMillimetersToTwip } from "./convenience-functions";
+
+describe("Utility", () => {
+    describe("#convertMillimetersToTwip", () => {
+        it("should call the underlying header's addChildElement for Paragraph", () => {
+            expect(convertMillimetersToTwip(1000)).to.equal(56692);
+        });
+    });
+
+    describe("#convertInchesToTwip", () => {
+        it("should call the underlying header's addChildElement", () => {
+            expect(convertInchesToTwip(1)).to.equal(1440);
+            expect(convertInchesToTwip(0.5)).to.equal(720);
+            expect(convertInchesToTwip(0.25)).to.equal(360);
+        });
+    });
+});