Files
servo/components/script_bindings/webidls/ServoTestUtils.webidl
Oriol Brufau d5c82150e0 layout: Add testing API for counting restyled and rebuilt fragments (#42817)
Now `ServoTestUtils.forceLayout()` will provide the number of fragments
that have been restyled and rebuilt. This will be useful to test that
incremental layout works well.

Testing: Adds a test using this new API

---------

Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Luke Warlow <lwarlow@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
2026-02-25 21:25:32 +00:00

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
// skip-unless CARGO_FEATURE_TESTBINDING
// This interface is entirely internal to Servo, and should not be accessible to
// web pages.
[Exposed=(Window,Worker), Pref="dom_servo_helpers_enabled"]
namespace ServoTestUtils {
[Exposed=Window, Pref="layout_animations_test_enabled"]
undefined advanceClock(long millis);
undefined crashHard();
[Exposed=Window]
LayoutResult forceLayout();
undefined js_backtrace();
undefined panic();
};
[Exposed=Window, Pref="dom_servo_helpers_enabled"]
interface LayoutResult {
readonly attribute /* FrozenArray<DOMString> */ any phases;
readonly attribute unsigned long rebuiltFragmentCount;
readonly attribute unsigned long restyleFragmentCount;
};