1 files changed, 64 insertions, 0 deletions
diff --git a/spec/javascripts/datetime_utility_spec.js.es6 b/spec/javascripts/datetime_utility_spec.js.es6
new file mode 100644
index 00000000000..a2d1b0a7732
--- /dev/null
+++ b/spec/javascripts/datetime_utility_spec.js.es6
@@ -0,0 +1,64 @@
+//= require lib/utils/datetime_utility
+(() => {
+  describe('Date time utils', () => {
+    describe('get day name', () => {
+      it('should return Sunday', () => {
+        const day = gl.utils.getDayName(new Date('07/17/2016'));
+        expect(day).toBe('Sunday');
+      });
+
+      it('should return Monday', () => {
+        const day = gl.utils.getDayName(new Date('07/18/2016'));
+        expect(day).toBe('Monday');
+      });
+
+      it('should return Tuesday', () => {
+        const day = gl.utils.getDayName(new Date('07/19/2016'));
+        expect(day).toBe('Tuesday');
+      });
+
+      it('should return Wednesday', () => {
+        const day = gl.utils.getDayName(new Date('07/20/2016'));
+        expect(day).toBe('Wednesday');
+      });
+
+      it('should return Thursday', () => {
+        const day = gl.utils.getDayName(new Date('07/21/2016'));
+        expect(day).toBe('Thursday');
+      });
+
+      it('should return Friday', () => {
+        const day = gl.utils.getDayName(new Date('07/22/2016'));
+        expect(day).toBe('Friday');
+      });
+
+      it('should return Saturday', () => {
+        const day = gl.utils.getDayName(new Date('07/23/2016'));
+        expect(day).toBe('Saturday');
+      });
+    });
+
+    describe('get day difference', () => {
+      it('should return 7', () => {
+        const firstDay = new Date('07/01/2016');
+        const secondDay = new Date('07/08/2016');
+        const difference = gl.utils.getDayDifference(firstDay, secondDay);
+        expect(difference).toBe(7);
+      });
+
+      it('should return 31', () => {
+        const firstDay = new Date('07/01/2016');
+        const secondDay = new Date('08/01/2016');
+        const difference = gl.utils.getDayDifference(firstDay, secondDay);
+        expect(difference).toBe(31);
+      });
+
+      it('should return 365', () => {
+        const firstDay = new Date('07/02/2015');
+        const secondDay = new Date('07/01/2016');
+        const difference = gl.utils.getDayDifference(firstDay, secondDay);
+        expect(difference).toBe(365);
+      });
+    });
+  });
+})();