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add scroll event listener test

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This commit is contained in:
Rene Haas
2022-10-25 22:31:14 +02:00
parent 983f95d2ec
commit cee980ddd7
1 changed files with 10 additions and 0 deletions
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packages/overlayscrollbars/test/jest-jsdom/overlayscrollbars.test.ts
+10
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@@ -302,17 +302,25 @@ describe('overlayscrollbars', () => {
const onUpdated = jest.fn(); const onUpdated = jest.fn();
const onUpdated2 = jest.fn(); const onUpdated2 = jest.fn();
const onDestroyed = jest.fn(); const onDestroyed = jest.fn();
const onScroll = jest.fn();
const osInstance = OverlayScrollbars(div, {}); const osInstance = OverlayScrollbars(div, {});
osInstance.on('initialized', onInitialized); osInstance.on('initialized', onInitialized);
osInstance.on('updated', [onUpdated, onUpdated, onUpdated2]); osInstance.on('updated', [onUpdated, onUpdated, onUpdated2]);
osInstance.on('destroyed', onDestroyed); osInstance.on('destroyed', onDestroyed);
osInstance.on('scroll', onScroll);
expect(onInitialized).not.toHaveBeenCalled(); expect(onInitialized).not.toHaveBeenCalled();
expect(onUpdated).not.toHaveBeenCalled(); expect(onUpdated).not.toHaveBeenCalled();
expect(onUpdated2).not.toHaveBeenCalled(); expect(onUpdated2).not.toHaveBeenCalled();
expect(onScroll).not.toHaveBeenCalled();
osInstance.elements().scrollEventElement.dispatchEvent(new Event('scroll'));
expect(onScroll).toHaveBeenCalledTimes(1);
expect(onScroll).toHaveBeenLastCalledWith(osInstance, expect.any(Object));
osInstance.update(); osInstance.update();
expect(onUpdated).not.toHaveBeenCalled(); expect(onUpdated).not.toHaveBeenCalled();
expect(onUpdated2).not.toHaveBeenCalled(); expect(onUpdated2).not.toHaveBeenCalled();
@@ -330,8 +338,10 @@ describe('overlayscrollbars', () => {
// after destruction no further events are triggered // after destruction no further events are triggered
osInstance.update(true); osInstance.update(true);
osInstance.elements().scrollEventElement.dispatchEvent(new Event('scroll'));
expect(onUpdated).toHaveBeenCalledTimes(1); expect(onUpdated).toHaveBeenCalledTimes(1);
expect(onUpdated2).toHaveBeenCalledTimes(1); expect(onUpdated2).toHaveBeenCalledTimes(1);
expect(onScroll).toHaveBeenCalledTimes(1);
}); });
test('off', () => { test('off', () => {