1 files changed, 21 insertions, 0 deletions
diff --git a/spec/frontend/contributors/utils_spec.js b/spec/frontend/contributors/utils_spec.js
new file mode 100644
index 00000000000..a2b9154329b
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+++ b/spec/frontend/contributors/utils_spec.js
@@ -0,0 +1,21 @@
+import * as utils from '~/contributors/utils';
+
+describe('Contributors Util Functions', () => {
+  describe('xAxisLabelFormatter', () => {
+    it('should return year if the date is in January', () => {
+      expect(utils.xAxisLabelFormatter(new Date('01-12-2019'))).toEqual('2019');
+    });
+
+    it('should return month name otherwise', () => {
+      expect(utils.xAxisLabelFormatter(new Date('12-02-2019'))).toEqual('Dec');
+      expect(utils.xAxisLabelFormatter(new Date('07-12-2019'))).toEqual('Jul');
+    });
+  });
+
+  describe('dateFormatter', () => {
+    it('should format provided date to YYYY-MM-DD format', () => {
+      expect(utils.dateFormatter(new Date('December 17, 1995 03:24:00'))).toEqual('1995-12-17');
+      expect(utils.dateFormatter(new Date(1565308800000))).toEqual('2019-08-09');
+    });
+  });
+});