fix: unit tests

Author: lukasbach

packages/core/src/features/async-data-loader/async-data-loader.spec.ts

@@ -46,6 +46,7 @@ describe("core-feature/selections", () => {
       );
       const setLoadingItemData = tree.mockedHandler("setLoadingItemData");
       tree.do.selectItem("x12");
+      await tree.do.awaitNextTick();
       expect(setLoadingItemChildrens).toHaveBeenCalledWith(["x12"]);
       expect(setLoadingItemData).not.toHaveBeenCalled();
       await tree.resolveAsyncVisibleItems();

packages/core/src/test-utils/test-tree-do.ts

@@ -135,4 +135,10 @@ export class TestTreeDo<T> {
       "function called with inconsistent parameters",
     ).toBeOneOf([0, 1]);
   }
+
+  async awaitNextTick() {
+    await new Promise((r) => {
+      setTimeout(r);
+    });
+  }
 }

packages/core/src/test-utils/test-tree.ts

@@ -87,10 +87,16 @@ export class TestTree<T = string> {
 
   static async resolveAsyncLoaders() {
     do {
+      await new Promise<void>((r) => {
+        setTimeout(r);
+      });
       TestTree.asyncLoaderResolvers.shift()?.();
       await new Promise<void>((r) => {
         setTimeout(r);
       });
+      await new Promise<void>((r) => {
+        setTimeout(r);
+      });
     } while (TestTree.asyncLoaderResolvers.length);
   }