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improve event listener test

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This commit is contained in:
Rene Haas
2022-10-25 22:33:43 +02:00
parent cee980ddd7
commit 0c3d8a4b1b
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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@@ -349,6 +349,7 @@ describe('overlayscrollbars', () => {
const onUpdated = jest.fn();
const onUpdated2 = jest.fn();
const onDestroyed = jest.fn();
const onScroll = jest.fn();
expect(onInitialized).not.toHaveBeenCalled();
const osInstance = OverlayScrollbars(
@@ -358,6 +359,7 @@ describe('overlayscrollbars', () => {
initialized: onInitialized,
updated: [onUpdated, onUpdated, onUpdated2],
destroyed: onDestroyed,
scroll: onScroll,
}
);
@@ -367,6 +369,14 @@ describe('overlayscrollbars', () => {
expect(onUpdated).toHaveBeenCalledTimes(1);
expect(onUpdated2).toHaveBeenCalledTimes(1);
expect(onScroll).not.toHaveBeenCalled();
osInstance.elements().scrollEventElement.dispatchEvent(new Event('scroll'));
expect(onUpdated).toHaveBeenCalledTimes(1);
osInstance.off('scroll', onScroll);
osInstance.elements().scrollEventElement.dispatchEvent(new Event('scroll'));
expect(onUpdated).toHaveBeenCalledTimes(1);
osInstance.update(true);
expect(onUpdated).toHaveBeenCalledTimes(2);