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sommilito-bank2
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splide-4.1.3
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src
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js
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utils
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dom
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query
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import { query } from './query'; describe( 'query', () => { beforeEach( () => { document.body.innerHTML = ` <div id="div1"> <span>1</span> </div> <div id="div2"> <span>2</span> </div> <div id="div3"> <span>3</span> </div> `; } ); test( 'can return the first element that matches the specified selector.', () => { const div1 = query( document, 'div' ); expect( div1.id ).toBe( 'div1' ); const div3 = query( document, '#div3' ); expect( div3.id ).toBe( 'div3' ); } ); test( 'can accept a parent element to start find an element from.', () => { const div2 = query( document, '#div2' ); const span2 = query( div2, 'span' ); expect( span2.textContent ).toBe( '2' ); } ); test( 'should return `null` if nothing matches the selector.', () => { expect( query( document, '#nothing' ) ).toBeNull(); } ); } );