This test makes sure that querySelector with pseudo-element doesn't match anything. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS document.querySelectorAll("#test p").length is 1 PASS document.querySelector("#test p") is target PASS document.querySelectorAll("#test p.ng").length is 1 PASS document.querySelector("#test p.ng") is target PASS document.querySelectorAll("#test div p").length is 1 PASS document.querySelector("#test div p") is target PASS document.querySelectorAll("#test div p.ng").length is 1 PASS document.querySelector("#test div p.ng") is target PASS document.querySelectorAll("#test p:first-line").length is 0 PASS document.querySelector("#test p:first-line") is null PASS successfullyParsed is true TEST COMPLETE