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Auto merge of #25534 - pshaughn:compiledeventscope, r=jdm

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Put target element, form owner, and element document on scope chain of compiled events

Event listeners that are created from a function object just get whatever closure the function object had, but event listeners created from a string need a special closure that acts like they were defined inside a series of `with` statements. This now happens. The existing WPT test for it, html/webappapis/scripting/events/compile-event-handler-lexical-scopes.html, also relies on other behavior we don't have, so I added an easier version of the test that doesn't involve bubbling or capturing and doesn't check any IDL properties we don't have. This new test will eventually be redundant when we have everything else the upstream test expects.

---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #25517

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- [X] There are tests for these changes

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This commit is contained in:
bors-servo 2020-01-15 23:27:20 -05:00 • committed by GitHub
commit 91877875b9
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3 changed files with 95 additions and 11 deletions
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10
tests/wpt/mozilla/meta/MANIFEST.json
View file

@ -11453,6 +11453,12 @@
{}
]
],
"mozilla/compile-event-handler-lexical-scopes-simple.html": [
[
"mozilla/compile-event-handler-lexical-scopes-simple.html",
{}
]
],
"mozilla/createEvent-storageevent.html": [
[
"mozilla/createEvent-storageevent.html",
@ -18589,6 +18595,10 @@
"8e06ffcc0933719b4b79ea6656d6635cc121d900",
"testharness"
],
"mozilla/compile-event-handler-lexical-scopes-simple.html": [
"7d1e1839390ea16183bffd09eef4e3445d5d8e16",
"testharness"
],
"mozilla/createEvent-storageevent.html": [
"f5deb0173b1459a655ecd62d1c1fd1b45c42c35b",
"testharness"

48
tests/wpt/mozilla/tests/mozilla/compile-event-handler-lexical-scopes-simple.html Normal file
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@ -0,0 +1,48 @@
<!DOCTYPE html>
<meta charset="utf-8">
<title>Lexical scopes when compiling an inline event handler (easy mode)</title>
<link rel="help" href="https://html.spec.whatwg.org/C/#getting-the-current-value-of-the-event-handler">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
setup({allow_uncaught_exception: true});
</script>
<!-- Testing just the core of
html/webappapis/scripting/events/compile-event-handler-lexical-scopes.html
to have a test for it that works while #25199 is open -->
<form method="POST">
<input value="hello" onclick="
window.testResults.value = value;
window.testResults.self = this;
window.testResults.method = method;
window.testResults.contentType = contentType;
window.testResults.input_var = input_var;
window.testResults.form_var = form_var;
window.testResults.doc_var = doc_var;
">
</form>
<script>
"use strict";
test(() => {
window.testResults = {};
document.querySelector("input").input_var = 1;
document.querySelector("form").form_var = 2;
document.doc_var = 3;
document.querySelector("input").click();
assert_equals(window.testResults.value, "hello");
assert_in_array(window.testResults.method, ["POST","post"]);
assert_equals(window.testResults.contentType, "text/html");
assert_equals(window.testResults.self, document.querySelector("input"));
assert_equals(window.testResults.input_var, 1);
assert_equals(window.testResults.form_var, 2);
assert_equals(window.testResults.doc_var, 3);
}, "Element, form owner, and document all expose expandos and IDL properties");
</script>