add getShapeBackgroundColor helper for property testing

Author: gustedeveloper

e2e/helpers/index.ts

@@ -1,2 +1,3 @@
 export * from './konva-testing.helpers';
 export * from './position.helpers';
+export * from './properties.helpers';

e2e/helpers/properties.helpers.ts

@@ -0,0 +1,11 @@
+import { Page } from '@playwright/test';
+import { getByShapeType } from './konva-testing.helpers';
+import { Group } from 'konva/lib/Group';
+
+export const getShapeBackgroundColor = async (
+  page: Page,
+  shapeType: string
+): Promise<string> => {
+  const shape = (await getByShapeType(page, shapeType)) as Group;
+  return shape?.children?.[0]?.attrs?.fill;
+};