fix: Add test for isExternalName

src/modules/ens/utils.spec.ts

@@ -0,0 +1,15 @@
+import { isExternalName } from './utils'
+
+describe('when checking if a subdomain is an external subdomain', () => {
+  describe('when providing a dcl subdomain', () => {
+    it('should return false', () => {
+      expect(isExternalName('name.dcl.eth')).toBe(false)
+    })
+  })
+
+  describe('when providing a non dcl subdomain', () => {
+    it('should return true', () => {
+      expect(isExternalName('name.eth')).toBe(true)
+    })
+  })
+})