test(contour): Add the ContourSegmentToggleLock.spec.ts test file to test contour locking (#6072)

tests/utils/assertions.ts

@@ -1,4 +1,4 @@
-import { Page } from '@playwright/test';
+import { Locator, Page } from '@playwright/test';
 import { expect } from 'playwright-test-coverage';
 
 import { DOMOverlayPageObject } from '../pages';
@@ -65,3 +65,11 @@ export async function assertBoundingBoxIsContainedWithin({
 export async function expectRowSelected(rowObject) {
   await expect(rowObject.locator).toContainClass('bg-popover');
 }
+
+export async function expectRowLocked(rowObject: { lockIcon: Locator }) {
+  await expect(rowObject.lockIcon, 'Expected the row to show the lock icon').toHaveCount(1);
+}
+
+export async function expectRowUnlocked(rowObject: { lockIcon: Locator }) {
+  await expect(rowObject.lockIcon, 'Expected the row to not show the lock icon').toHaveCount(0);
+}