22 lines
736 B
JavaScript
22 lines
736 B
JavaScript
import { getCssClassDimensions } from '~/lib/utils/css_utils';
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describe('getCssClassDimensions', () => {
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const mockDimensions = { width: 1, height: 2 };
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let actual;
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beforeEach(() => {
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jest.spyOn(Element.prototype, 'getBoundingClientRect').mockReturnValue(mockDimensions);
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actual = getCssClassDimensions('foo bar');
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});
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it('returns the measured width and height', () => {
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expect(actual).toEqual(mockDimensions);
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});
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it('measures an element with the given classes', () => {
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expect(Element.prototype.getBoundingClientRect).toHaveBeenCalledTimes(1);
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const [tempElement] = Element.prototype.getBoundingClientRect.mock.contexts;
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expect([...tempElement.classList]).toEqual(['foo', 'bar']);
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});
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});
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