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domenic
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Test moving <script>s between documents
This follows the changes in whatwg/html#2673, but also tests the issue at whatwg/html#2137 in favor of the current spec.
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‎html/semantics/scripting-1/the-script-element/moving-between-documents.html

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<!DOCTYPE html>
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<meta charset="utf-8">
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<title>Moving script elements between documents</title>
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<link rel="author" href="mailto:[email protected]" title="Domenic Denicola">
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<link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<!-- Background:
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- https://www.w3.org/Bugs/Public/show_bug.cgi?id=11323
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- https://github.com/whatwg/html/issues/2137
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- https://github.com/whatwg/html/issues/2469
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- https://github.com/whatwg/html/pull/2673
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-->
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<body>
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<script>
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"use strict";
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window.didExecute = false;
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async_test(t => {
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t.add_cleanup(() => {
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window.didExecute = false;
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});
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const iframe = document.createElement("iframe");
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iframe.onload = t.step_func_done(() => {
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iframe.contentWindow.didExecute = false;
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iframe.contentDocument.write("<streaming-element>");
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document.body.appendChild(iframe.contentDocument.querySelector("streaming-element"));
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iframe.contentDocument.write(`<script id="s1">window.didExecute = true;<` + "/script>");
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iframe.contentDocument.write("</streaming-element>");
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const s = document.querySelector("#s1");
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s.onload = t.unreached_func("onload");
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s.onerror = t.unreached_func("onerror");
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iframe.contentDocument.close();
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assert_false(window.didExecute, "The script must not have executed in this window");
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assert_equals(iframe.contentWindow.didExecute, undefined,
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"The script must not have executed in the iframe window");
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});
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document.body.appendChild(iframe);
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}, "Moving to another document during parsing, inline script");
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async_test(t => {
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t.add_cleanup(() => {
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window.didExecute = false;
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});
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const iframe = document.createElement("iframe");
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iframe.onload = t.step_func(() => {
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iframe.contentWindow.didExecute = false;
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iframe.contentDocument.write("<streaming-element>");
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document.body.appendChild(iframe.contentDocument.querySelector("streaming-element"));
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iframe.contentDocument.write(`<script id="s2" src="resources/flag-setter.js"><` + "/script>");
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iframe.contentDocument.write("</streaming-element>");
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const s = document.querySelector("#s2");
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s.onload = t.unreached_func("onload");
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s.onerror = t.unreached_func("onerror");
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iframe.contentDocument.close();
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t.step_timeout(() => {
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assert_false(window.didExecute, "The script must not have executed in this window");
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assert_equals(iframe.contentWindow.didExecute, undefined,
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"The script must not have executed in the iframe window");
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t.done();
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}, 3000);
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});
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document.body.appendChild(iframe);
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}, "Moving to another document during parsing, external script");
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async_test(t => {
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t.add_cleanup(() => {
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window.didExecute = false;
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});
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const iframe = document.createElement("iframe");
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iframe.onload = t.step_func(() => {
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const s = document.createElement("script");
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s.src = "resources/slow-flag-setter.py";
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s.onload = t.unreached_func("onload");
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s.onerror = t.unreached_func("onerror");
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// Start the fetch
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document.body.appendChild(s);
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// Need to delay since the "prepare a script" algorithm also contains related checks; we want to
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// test the "execute a script block" algorithm for when the fetch comes back.
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t.step_timeout(() => {
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iframe.contentDocument.body.appendChild(s);
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}, 0);
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t.step_timeout(() => {
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assert_false(window.didExecute, "The script must not have executed in this window");
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assert_equals(iframe.contentWindow.didExecute, undefined,
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"The script must not have executed in the iframe window");
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t.done();
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}, 3000);
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});
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document.body.appendChild(iframe);
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}, "Moving to another Window's document during fetching");
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async_test(t => {
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t.add_cleanup(() => {
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window.didExecute = false;
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});
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const s = document.createElement("script");
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s.src = "resources/slow-flag-setter.py";
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s.onload = t.unreached_func("onload");
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s.onerror = t.unreached_func("onerror");
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// Start the fetch
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document.body.appendChild(s);
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// Need to delay since the "prepare a script" algorithm also contains related checks; we want to
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// test the "execute a script block" algorithm for when the fetch comes back.
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t.step_timeout(() => {
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const doc2 = document.implementation.createHTMLDocument("title");
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doc2.body.appendChild(s);
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}, 0);
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t.step_timeout(() => {
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assert_false(window.didExecute, "The script must not have executed in this window");
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t.done();
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}, 3000);
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}, "Moving to a document where scripting is disabled during fetching");
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</script>

‎html/semantics/scripting-1/the-script-element/resources/flag-setter.js

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"use strict";
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window.didExecute = true;

‎html/semantics/scripting-1/the-script-element/resources/slow-flag-setter.py

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import time
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def main(request, response):
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time.sleep(1)
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headers = [("Content-Type", "text/javascript")]
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body = "window.didExecute = true;"
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return headers, body

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