MAGETWO-59718: Date sets to 2020 year after save

- Added Jasmine unit tests

Author: abarua17

app/code/Magento/Ui/view/base/web/js/form/element/date.js

@@ -196,7 +196,7 @@ define([
 
             newFormat = format.replace(/yy|y/gi, 'YYYY'); // replace the year
             newFormat = newFormat.replace(/dd|d/g, 'DD'); // replace the date
-            newFormat = newFormat.replace(/mm|m/g, 'MM'); //replace the month
+            newFormat = newFormat.replace(/mm|m/gi, 'MM'); //replace the month
 
             return newFormat;
         }

dev/tests/js/jasmine/tests/app/code/Magento/Ui/base/js/form/element/date.test.js

@@ -6,8 +6,9 @@
 /*eslint max-nested-callbacks: 0*/
 
 define([
-    'Magento_Ui/js/form/element/date'
-], function (DateElement) {
+    'Magento_Ui/js/form/element/date',
+    'mageUtils'
+], function (DateElement, utils) {
     'use strict';
 
     describe('Magento_Ui/js/form/element/date', function () {
@@ -19,5 +20,23 @@ define([
             };
             model = new DateElement(params);
         });
+
+        it('Check convertToMomentFormat function', function () {
+            var format,
+                momentFormat;
+
+            format = 'M/d/yy';
+            momentFormat = 'MM/DD/YYYY';
+            expect(model.convertToMomentFormat(format)).toBe(momentFormat);
+        });
+
+        it('Check prepareDateTimeFormats function', function () {
+            spyOn(model, 'convertToMomentFormat');
+            spyOn(utils, 'normalizeDate');
+            model.prepareDateTimeFormats();
+            expect(model.convertToMomentFormat).toHaveBeenCalled();
+            expect(utils.normalizeDate).toHaveBeenCalled();
+        });
+
     });
 });