ent]);
    assertElementsFromPoint('document', centerX(blockHost), centerY(blockHost),
        [blockHost, document.body, document.documentElement]);
    assertElementsFromPoint('document', centerX(inlineBlockHost), centerY(inlineBlockHost),
        [inlineBlockHost, document.body, document.documentElement]);
    assertElementsFromPoint('document', centerX(submit), centerY(submit),
        [submit, document.body, document.documentElement]);
}, 'elementsFromPoint on the document root should not return elemen