Improve initArkoseLabsScript spec

ee/spec/frontend/arkose_labs/init_arkose_labs_script_spec.js

 import { initArkoseLabsScript } from 'ee/arkose_labs/init_arkose_labs_script';
 
-jest.mock('lodash/uniqueId', () => () => 'initArkoseLabsScript_callback');
+jest.mock('lodash/uniqueId', () => (x) => `${x}7`);
+
+const EXPECTED_CALLBACK_NAME = '_initArkoseLabsScript_callback_7';
+const TEST_PUBLIC_KEY = 'arkose-labs-public-api-key';
 
 describe('initArkoseLabsScript', () => {
   let subject;
 
   const initSubject = () => {
-    subject = initArkoseLabsScript({ publicKey: 'arkose-labs-public-api-key' });
+    subject = initArkoseLabsScript({ publicKey: TEST_PUBLIC_KEY });
   };
 
   const findScriptTags = () => document.querySelectorAll('script');
@@ -19,7 +22,7 @@ describe('initArkoseLabsScript', () => {
   it('sets a global enforcement callback', () => {
     initSubject();
 
-    expect(window.initArkoseLabsScript_callback).not.toBe(undefined);
+    expect(window[EXPECTED_CALLBACK_NAME]).not.toBe(undefined);
   });
 
   it('adds ArkoseLabs scripts to the HTML head', () => {
@@ -27,15 +30,21 @@ describe('initArkoseLabsScript', () => {
 
     initSubject();
 
-    expect(findScriptTags()).toHaveLength(1);
+    const scriptTag = findScriptTags().item(0);
+
+    expect(scriptTag.getAttribute('type')).toBe('text/javascript');
+    expect(scriptTag.getAttribute('src')).toBe(
+      `https://client-api.arkoselabs.com/v2/${TEST_PUBLIC_KEY}/api.js`,
+    );
+    expect(scriptTag.getAttribute('data-callback')).toBe(EXPECTED_CALLBACK_NAME);
   });
 
   it('when callback is called, cleans up the global object and resolves the Promise', () => {
     initSubject();
     const enforcement = 'ArkoseLabsEnforcement';
-    window.initArkoseLabsScript_callback(enforcement);
+    window[EXPECTED_CALLBACK_NAME](enforcement);
 
-    expect(window.initArkoseLabsScript_callback).toBe(undefined);
+    expect(window[EXPECTED_CALLBACK_NAME]).toBe(undefined);
     return expect(subject).resolves.toBe(enforcement);
   });
 });