Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: c14b33d618b86af71d1a5e61fc66fd552c43ffce
      
https://github.com/WebKit/WebKit/commit/c14b33d618b86af71d1a5e61fc66fd552c43ffce
  Author: Brent Fulgham <[email protected]>
  Date:   2026-04-29 (Wed, 29 Apr 2026)

  Changed paths:
    M LayoutTests/TestExpectations
    R 
LayoutTests/http/tests/security/window-opened-from-sandboxed-iframe-should-inherit-sandbox-expected.txt
    R 
LayoutTests/http/tests/security/window-opened-from-sandboxed-iframe-should-inherit-sandbox.html
    A 
LayoutTests/imported/w3c/web-platform-tests/html/browsers/sandboxing/resources/set-opener-flag-and-postmessage.html
    A 
LayoutTests/imported/w3c/web-platform-tests/html/browsers/sandboxing/sandbox-popup-inherits-script-blocking-expected.txt
    A 
LayoutTests/imported/w3c/web-platform-tests/html/browsers/sandboxing/sandbox-popup-inherits-script-blocking.html

  Log Message:
  -----------
  Migrate window-opened-from-sandboxed-iframe-should-inherit-sandbox.html to a 
WPT
https://bugs.webkit.org/show_bug.cgi?id=313516
<rdar://problem/61733642>

Reviewed by Anne van Kesteren.

While investigating the cause of test flakiness in our WebKit-specific CSP test
`http/tests/security/window-opened-from-sandboxed-iframe-should-inherit-sandbox.html`
I realized that this coverage does not exist in WPT, and should.

This patch converts the existing test into a WPT test. It also revises the 
logic of the
test to avoid the event-firing logic that caused timing dependencies that could 
lead
to flakiness. The test just needs to confirm the script in the sub-frame 
doesn't run,
which can be done without an artificial click event.

* LayoutTests/TestExpectations:
* 
LayoutTests/http/tests/security/window-opened-from-sandboxed-iframe-should-inherit-sandbox-expected.txt:
 Removed.
* 
LayoutTests/http/tests/security/window-opened-from-sandboxed-iframe-should-inherit-sandbox.html:
 Removed.
* 
LayoutTests/imported/w3c/web-platform-tests/html/browsers/sandboxing/resources/set-opener-flag-and-postmessage.html:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/html/browsers/sandboxing/sandbox-popup-inherits-script-blocking-expected.txt:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/html/browsers/sandboxing/sandbox-popup-inherits-script-blocking.html:
 Added.

Canonical link: https://commits.webkit.org/312312@main



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