1 files changed, 19 insertions, 0 deletions
diff --git a/spec/frontend/lib/utils/common_utils_spec.js b/spec/frontend/lib/utils/common_utils_spec.js
index effc446d846..09eb362c77e 100644
--- a/spec/frontend/lib/utils/common_utils_spec.js
+++ b/spec/frontend/lib/utils/common_utils_spec.js
@@ -959,6 +959,25 @@ describe('common_utils', () => {
     });
   });
 
+  describe('roundDownFloat', () => {
+    it('Rounds down decimal places of a float number with provided precision', () => {
+      expect(commonUtils.roundDownFloat(3.141592, 3)).toBe(3.141);
+    });
+
+    it('Rounds down a float number to a whole number when provided precision is zero', () => {
+      expect(commonUtils.roundDownFloat(3.141592, 0)).toBe(3);
+      expect(commonUtils.roundDownFloat(3.9, 0)).toBe(3);
+    });
+
+    it('Rounds down float number to nearest 0, 10, 100, 1000 and so on when provided precision is below 0', () => {
+      expect(commonUtils.roundDownFloat(34567.14159, -1)).toBeCloseTo(34560);
+      expect(commonUtils.roundDownFloat(34567.14159, -2)).toBeCloseTo(34500);
+      expect(commonUtils.roundDownFloat(34567.14159, -3)).toBeCloseTo(34000);
+      expect(commonUtils.roundDownFloat(34567.14159, -4)).toBeCloseTo(30000);
+      expect(commonUtils.roundDownFloat(34567.14159, -5)).toBeCloseTo(0);
+    });
+  });
+
   describe('searchBy', () => {
     const searchSpace = {
       iid: 1,