failed attempt at useThrottle tests

awx/ui_next/src/components/JobList/useThrottle.test.jsx

@@ -0,0 +1,46 @@
+import React from 'react';
+import { act } from 'react-dom/test-utils';
+import { mount } from 'enzyme';
+import useThrottle from './useThrottle';
+
+function TestInner() {
+  return <div />;
+}
+function Test({ value }) {
+  const throttled = useThrottle(value, 500);
+  return <TestInner throttled={throttled} />;
+}
+
+jest.useFakeTimers();
+
+describe('useThrottle', () => {
+  test.skip('should throttle value', async () => {
+    const mockTime = { value: 1000 };
+    const realDateNow = Date.now.bind(global.Date);
+    const dateNowStub = jest.fn(() => mockTime.value);
+    global.Date.now = dateNowStub;
+    let wrapper;
+    await act(async () => {
+      wrapper = await mount(<Test value={3} />);
+    });
+
+    wrapper.setProps({
+      value: 4,
+    });
+
+    expect(wrapper.find('TestInner').prop('throttled')).toEqual(3);
+    jest.advanceTimersByTime(501);
+    mockTime.value = 1510;
+    wrapper.setProps({
+      value: 2,
+    });
+    wrapper.setProps({
+      value: 4,
+    });
+    wrapper.update();
+    expect(wrapper.find('TestInner').prop('throttled')).toEqual(4);
+
+    // Date.now.restore();
+    global.Date.now = realDateNow;
+  });
+});