🧪 Adds test for throttle class

app/test/specs/throttler.spec.ts

@@ -0,0 +1,46 @@
+import { throttler } from '../../src/lib/utilities';
+import { describe, it, expect, beforeEach, afterEach, test, vitest } from 'vitest';
+
+describe('throttler', () => {
+  let throttleInstance: throttler;
+  let callback
+
+  beforeEach(() => {
+    vitest.useFakeTimers();
+    throttleInstance = new throttler();
+    callback = vitest.fn();
+  });
+
+  afterEach(() => {
+    vitest.useRealTimers();
+  });
+
+  it('should call the callback function after the specified time', () => {
+    throttleInstance.throttle(callback, 1000);
+    expect(callback).not.toHaveBeenCalled();
+
+    vitest.advanceTimersByTime(1000);
+    expect(callback).toHaveBeenCalledTimes(1);
+  });
+
+  it('should not call the callback function if throttle is called again within the timeout period', () => {
+    throttleInstance.throttle(callback, 1000);
+    throttleInstance.throttle(callback, 1000);
+
+    vitest.advanceTimersByTime(500);
+    expect(callback).not.toHaveBeenCalled();
+
+    vitest.advanceTimersByTime(500);
+    expect(callback).toHaveBeenCalledTimes(1);
+  });
+
+  it('should allow the callback to be called again after the timeout period', () => {
+    throttleInstance.throttle(callback, 1000);
+    vitest.advanceTimersByTime(1000);
+    expect(callback).toHaveBeenCalledTimes(1);
+
+    throttleInstance.throttle(callback, 1000);
+    vitest.advanceTimersByTime(1000);
+    expect(callback).toHaveBeenCalledTimes(2);
+  });
+});