diff options
Diffstat (limited to 'dom/bindings/test/test_proxy_missing_prop.html')
| -rw-r--r-- | dom/bindings/test/test_proxy_missing_prop.html | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/dom/bindings/test/test_proxy_missing_prop.html b/dom/bindings/test/test_proxy_missing_prop.html new file mode 100644 index 0000000000..cdb6851722 --- /dev/null +++ b/dom/bindings/test/test_proxy_missing_prop.html @@ -0,0 +1,49 @@ +<!DOCTYPE HTML> +<html> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=1863543 +--> +<head> + <meta charset="utf-8"> + <title>Test for Bug 1863543</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> +</head> +<body> +<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1863543">Mozilla Bug 1863543</a> +<p id="display"></p> +<pre id="test"> +<script> +// Test for JIT IC guards for missing properties on the HTMLDocument DOM proxy. +function testMissingProps() { + var doc = document; + var docProto = Object.getPrototypeOf(doc); + + for (var i = 0; i < 30; i++) { + if (i === 15) { + // Add shadowing expando property. + doc.unusedPropName1 = 12; + } + if (i === 20) { + // Add prototype property. + docProto.unusedPropName2 = 34; + } + if (i == 25) { + // Add shadowing element. + var el = document.createElement("object"); + el.id = "unusedPropName3"; + document.body.appendChild(el); + } + var v1 = doc.unusedPropName1; + var v2 = doc.unusedPropName2; + var v3 = doc.unusedPropName3; + is(v1, i >= 15 ? 12 : undefined); + is(v2, i >= 20 ? 34 : undefined); + is(v3, i >= 25 ? el : undefined); + } +} +testMissingProps(); +</script> +</pre> +</body> +</html> |