diff --git a/packages/core/__tests__/unit/utils/basic.test.ts b/packages/core/__tests__/unit/utils/basic.test.ts
new file mode 100644
index 000000000..f356f0ce4
--- /dev/null
+++ b/packages/core/__tests__/unit/utils/basic.test.ts
@@ -0,0 +1,33 @@
+import { callPromiseUntilEnd, callUntilEnd } from "@/main";
+import { expect, test } from "vitest";
+
+test("Call until end", async () => {
+  const startT = Date.now();
+  let i = 0;
+  await callUntilEnd(() => {
+    expect(Date.now() - startT).toBeGreaterThanOrEqual(100 * i);
+    return ++i === 10;
+  }, 100);
+
+  expect(Date.now() - startT).toBeGreaterThanOrEqual(1000);
+  expect(i).toBe(10);
+});
+
+test("Call promise until end", async () => {
+  const startT = Date.now();
+  let i = 0;
+  await callPromiseUntilEnd(async () => {
+    return new Promise((resolve) =>
+      setTimeout(() => {
+        i++;
+        expect(Date.now() - startT).toBeGreaterThanOrEqual(100 * i * 2);
+        console.log(Date.now() - startT, i);
+
+        resolve(i >= 10);
+      }, 100)
+    );
+  }, 100);
+
+  expect(Date.now() - startT).toBeGreaterThanOrEqual(2000);
+  expect(i).toBe(10);
+});