test: quiet and speed up test runs

packages/core/test/delay.test.ts

@@ -0,0 +1,24 @@
+import { afterEach, describe, expect, mock, test } from "bun:test";
+import { delay } from "../src/utils/delay";
+
+describe("delay", () => {
+  const originalNodeEnv = process.env.NODE_ENV;
+  const originalSetTimeout = globalThis.setTimeout;
+
+  afterEach(() => {
+    process.env.NODE_ENV = originalNodeEnv;
+    globalThis.setTimeout = originalSetTimeout;
+  });
+
+  test("does not schedule throttle timers during tests", async () => {
+    process.env.NODE_ENV = "test";
+    const setTimeoutMock = mock(() => {
+      throw new Error("setTimeout should not be called during tests");
+    });
+    globalThis.setTimeout = setTimeoutMock as unknown as typeof setTimeout;
+
+    await delay(1000);
+
+    expect(setTimeoutMock).not.toHaveBeenCalled();
+  });
+});