CCM-12666: add wcag2aaa standard which includes the heading order violation rule.

Author: bhansell1

tests/test-team/config/accessibility/accessibility.config.ts

@@ -45,7 +45,7 @@ export default defineConfig({
   ],
   /* Run your local dev server before starting the tests */
   webServer: {
-    timeout: 4 * 60 * 1000, // 2 minutes
+    timeout: 4 * 60 * 1000, // 4 minutes
     command: buildCommand,
     cwd: path.resolve(__dirname, '../../../..'),
     url: 'http://localhost:3000/templates/create-and-submit-templates',

tests/test-team/fixtures/accessibility-analyze.ts

@@ -15,8 +15,17 @@ type AccessibilityFixture = {
   analyze: Analyze;
 };
 
+const DISABLED_RULES = [
+  /* We don't have control over NHS colours.
+   * Axe decides the page is 5.75 ratio and wcag2aaa expects 7:1
+   */
+  'color-contrast-enhanced',
+];
+
 const makeAxeBuilder = (page: Page) =>
-  new AxeBuilder({ page }).withTags(['wcag2a', 'wcag2aa']);
+  new AxeBuilder({ page })
+    .withTags(['wcag2a', 'wcag2aa', 'wcag2aaa'])
+    .disableRules(DISABLED_RULES);
 
 export const test = base.extend<AccessibilityFixture>({
   analyze: async ({ baseURL, page }, use) => {