mocha: add unit tests for formatNum()

Signed-off-by: Dennis Francis <[email protected]>
Change-Id: I07fb6b479c93789f773857e15041c8c35ee8328a

browser/mocha_tests/Util.test.ts

@@ -1,4 +1,5 @@
 /// <reference path="./refs/globals.ts"/>
+/// <reference path="./helper/util.ts"/>
 /// <reference path="../src/app/Util.ts"/>
 
 var assert = require('assert');
@@ -31,4 +32,30 @@ describe('Util static members tests', function () {
 		});
 
 	});
+
+	describe('formatNum()', function() {
+		it('integer with no decimal places', function () {
+			assertFloat(Util.formatNum(5, 0), 5, 1e-5, '');
+		});
+
+		it('integer with 4 decimal places', function () {
+			assertFloat(Util.formatNum(5, 4), 5, 1e-5, '');
+		});
+
+		it('decimal with 1 decimal places no-round', function () {
+			assertFloat(Util.formatNum(5.30333333, 1), 5.3, 1e-5, '');
+		});
+
+		it('decimal with 4 decimal places no-round', function () {
+			assertFloat(Util.formatNum(5.30333333, 4), 5.3033, 1e-5, '');
+		});
+
+		it('decimal with 1 decimal places round', function () {
+			assertFloat(Util.formatNum(5.35333333, 1), 5.3, 1e-5, '');
+		});
+
+		it('decimal with 4 decimal places no-round', function () {
+			assertFloat(Util.formatNum(5.30335333, 4), 5.3034, 1e-5, '');
+		});
+	});
 });