added some tests to utils folder

src/core/utils/debounce.test.ts

@@ -0,0 +1,64 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { debounce } from "./debounce";
+
+describe("debounce", () => {
+  beforeEach(() => {
+    vi.useFakeTimers();
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it("delays executing the callback until after wait time has elapsed", () => {
+    const mockCallback = vi.fn();
+    const debouncedFunction = debounce(mockCallback, 500);
+
+    debouncedFunction();
+    expect(mockCallback).not.toHaveBeenCalled();
+
+    vi.advanceTimersByTime(300);
+    expect(mockCallback).not.toHaveBeenCalled();
+
+    vi.advanceTimersByTime(200);
+    expect(mockCallback).toHaveBeenCalledTimes(1);
+  });
+
+  it("only executes the callback once if called multiple times within wait period", () => {
+    const mockCallback = vi.fn();
+    const debouncedFunction = debounce(mockCallback, 500);
+
+    debouncedFunction();
+    debouncedFunction();
+    debouncedFunction();
+
+    vi.advanceTimersByTime(500);
+    expect(mockCallback).toHaveBeenCalledTimes(1);
+  });
+
+  it("resets the timer when called again during wait period", () => {
+    const mockCallback = vi.fn();
+    const debouncedFunction = debounce(mockCallback, 500);
+
+    debouncedFunction();
+
+    vi.advanceTimersByTime(300);
+    debouncedFunction();
+
+    vi.advanceTimersByTime(300);
+    expect(mockCallback).not.toHaveBeenCalled();
+
+    vi.advanceTimersByTime(200);
+    expect(mockCallback).toHaveBeenCalledTimes(1);
+  });
+
+  it("passes arguments to the callback function", () => {
+    const mockCallback = vi.fn();
+    const debouncedFunction = debounce(mockCallback, 500);
+
+    debouncedFunction("test", 123);
+
+    vi.advanceTimersByTime(500);
+    expect(mockCallback).toHaveBeenCalledWith("test", 123);
+  });
+});