19 lines
521 B
JavaScript
19 lines
521 B
JavaScript
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import { calculateScrollTop } from '../scrollTopCalculationHelper';
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describe('#calculateScrollTop', () => {
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it('returns calculated value of the scrollTop property', () => {
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class DOMElement {
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constructor(scrollHeight) {
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this.scrollHeight = scrollHeight;
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}
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}
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let count = 3;
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let relevantMessages = [];
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while (count > 0) {
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relevantMessages.push(new DOMElement(100));
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count -= 1;
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}
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expect(calculateScrollTop(1000, 300, relevantMessages)).toEqual(550);
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});
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});
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