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Add TrustedType tests for iframe.srcdoc. #49996

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merged 2 commits into from
Jan 9, 2025
Merged

Add TrustedType tests for iframe.srcdoc. #49996

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d248989
Add TrustedType tests for iframe.srcdoc.
fred-wang Jan 9, 2025
e90a765
fix many errors
fred-wang Jan 9, 2025
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54 changes: 54 additions & 0 deletions trusted-types/block-string-assignment-to-HTMLIFrameElement-srcdoc.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/helper.sub.js"></script>

<meta http-equiv="Content-Security-Policy" content="require-trusted-types-for 'script';">
<body>
<script>
// TrustedHTML assignments do not throw.
test(t => {
let p = createHTML_policy(window, 1);
let html = p.createHTML(INPUTS.HTML);
let iframe = document.createElement("iframe");
iframe.srcdoc = html;
assert_equals(iframe.srcdoc, RESULTS.HTML);
}, "iframe.srcdoc assigned via policy (successful HTML transformation).");

// String assignments throw.
test(t => {
let iframe = document.createElement("iframe");
assert_throws_js(TypeError, _ => {
iframe.srcdoc = "A string";
});
}, "`iframe.srcdoc = string` throws.");

// Null assignment throws.
test(t => {
let iframe = document.createElement("iframe");
assert_throws_js(TypeError, _ => {
iframe.srcdoc = null;
});
}, "`iframe.srcdoc = null` throws.");

// After default policy creation string assignment implicitly calls createHTML
test(t => {
let p = window.trustedTypes.createPolicy("default", { createHTML:
(value, _, sink) => {
assert_equals(sink, "HTMLIFrameElement srcdoc");
return createHTMLJS(value);
}
});

let iframe = document.createElement("iframe");
iframe.srcdoc = INPUTS.HTML;
assert_equals(iframe.srcdoc, RESULTS.HTML);
}, "`iframe.srcdoc = string` assigned via default policy (successful HTML transformation).");

// After default policy creation null assignment implicitly calls createHTML.
test(t => {
let iframe = document.createElement("iframe");
iframe.srcdoc = null;
assert_equals(iframe.srcdoc, "null");
}, "`iframe.srcdoc = null` assigned via default policy does not throw");
</script>