HARMONY-1894: Fix error message for exceeding label max characters

services/harmony/app/models/label.ts

@@ -1,14 +1,14 @@
 import { Transaction } from '../util/db';
 
 /**
- * Returns an error message if a label is empty or exceeds 255 characters in length
+ * Returns an error message if a label exceeds 255 characters in length
  *
  * @param tag - The image tag to check
  * @returns An error message if the tag is not valid, null otherwise
  */
 export function checkLabel(label: string): string {
-  if (label.length < 1 || label.length > 255) {
-    const message = 'Labels must consist of at least one 1 and no more than 255 characters.';
+  if (label.length > 255) {
+    const message = 'Labels may not exceed 255 characters in length.';
     return message;
   }
   return null;

services/harmony/test/models/label.ts

@@ -26,11 +26,10 @@ describe('checkLabel', function () {
   it('should return an error message for invalid labels', function () {
     // Examples of invalid labels
     const invalidLabels = [
-      '', // empty
       'a'.repeat(256), // Exceeds maximum length
     ];
 
-    const errorMessage = 'Labels must consist of at least one 1 and no more than 255 characters.';
+    const errorMessage = 'Labels may not exceed 255 characters in length.';
 
     invalidLabels.forEach(label => {
       const result = checkLabel(label);

services/harmony/test/parameters/label.ts

@@ -121,7 +121,7 @@ describe('labels', function () {
       });
 
       it('returns a meaningful error message', async function () {
-        expect(this.res.text).to.include('Labels must consist of at least one 1 and no more than 255 characters');
+        expect(this.res.text).to.include('Labels may not exceed 255 characters in length.');
       });
     });
   }