1 files changed, 16 insertions, 1 deletions
diff --git a/spec/frontend/lib/utils/color_utils_spec.js b/spec/frontend/lib/utils/color_utils_spec.js
index 433e9d5a85e..8c846abd77f 100644
--- a/spec/frontend/lib/utils/color_utils_spec.js
+++ b/spec/frontend/lib/utils/color_utils_spec.js
@@ -1,4 +1,4 @@
-import { textColorForBackground, hexToRgb } from '~/lib/utils/color_utils';
+import { textColorForBackground, hexToRgb, validateHexColor } from '~/lib/utils/color_utils';
 
 describe('Color utils', () => {
   describe('Converting hex code to rgb', () => {
@@ -32,4 +32,19 @@ describe('Color utils', () => {
       expect(textColorForBackground('#000')).toEqual('#FFFFFF');
     });
   });
+
+  describe('Validate hex color', () => {
+    it.each`
+      color        | output
+      ${undefined} | ${null}
+      ${null}      | ${null}
+      ${''}        | ${null}
+      ${'ABC123'}  | ${false}
+      ${'#ZZZ'}    | ${false}
+      ${'#FF0'}    | ${true}
+      ${'#FF0000'} | ${true}
+    `('returns $output when $color is given', ({ color, output }) => {
+      expect(validateHexColor(color)).toEqual(output);
+    });
+  });
 });