test(runtime-vapor): port tests from rendererChildren.spec.ts (#13649)

Author: edison1105

packages/runtime-vapor/__tests__/_utils.ts

@@ -135,3 +135,21 @@ export function makeInteropRender(): (comp: Component) => InteropRenderContext {
 
   return define
 }
+
+export function shuffle(array: Array<any>): any[] {
+  let currentIndex = array.length
+  let temporaryValue
+  let randomIndex
+
+  // while there remain elements to shuffle...
+  while (currentIndex !== 0) {
+    // pick a remaining element...
+    randomIndex = Math.floor(Math.random() * currentIndex)
+    currentIndex -= 1
+    // and swap it with the current element.
+    temporaryValue = array[currentIndex]
+    array[currentIndex] = array[randomIndex]
+    array[randomIndex] = temporaryValue
+  }
+  return array
+}