var closest = require('../src/closest');
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describe('closest', function() {
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before(function() {
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var html = '<div id="a">' +
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'<div id="b">' +
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'<div id="c"></div>' +
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'</div>' +
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'</div>';
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document.body.innerHTML += html;
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global.a = document.querySelector('#a');
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global.b = document.querySelector('#b');
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global.c = document.querySelector('#c');
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});
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after(function() {
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document.body.innerHTML = '';
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});
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it('should return the closest parent based on the selector', function() {
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assert.ok(closest(global.c, '#b'), global.b);
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assert.ok(closest(global.c, '#a'), global.a);
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assert.ok(closest(global.b, '#a'), global.a);
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});
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it('should return itself if the same selector is passed', function() {
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assert.ok(closest(document.body, 'body'), document.body);
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});
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it('should not throw on elements without matches()', function() {
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var fakeElement = {
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nodeType: -1, // anything but DOCUMENT_NODE_TYPE
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parentNode: null,
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matches: undefined // undefined to emulate Elements without this function
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};
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try {
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closest(fakeElement, '#a')
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} catch (err) {
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assert.fail();
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}
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});
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});
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