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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
| commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
| tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /testing/web-platform/tests/custom-elements/form-associated/ElementInternals-target-element-is-held-strongly.html | |
| parent | Initial commit. (diff) | |
| download | thunderbird-upstream.tar.xz thunderbird-upstream.zip | |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/custom-elements/form-associated/ElementInternals-target-element-is-held-strongly.html')
| -rw-r--r-- | testing/web-platform/tests/custom-elements/form-associated/ElementInternals-target-element-is-held-strongly.html | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/testing/web-platform/tests/custom-elements/form-associated/ElementInternals-target-element-is-held-strongly.html b/testing/web-platform/tests/custom-elements/form-associated/ElementInternals-target-element-is-held-strongly.html new file mode 100644 index 0000000000..a747c04c5c --- /dev/null +++ b/testing/web-platform/tests/custom-elements/form-associated/ElementInternals-target-element-is-held-strongly.html @@ -0,0 +1,26 @@ +<!DOCTYPE html> +<title>Target element of ElementsInternals is held strongly and doesn't get GCed if there are no other references</title> +<body> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/common/gc.js"></script> + +<script> +customElements.define("x-foo", class extends HTMLElement {}); + +promise_test(async t => { + const elementInternals = []; + + for (let i = 0; i < 1e5; i++) { + const targetElement = document.createElement("x-foo"); + targetElement.attachShadow({ mode: "open" }); + elementInternals.push(targetElement.attachInternals()); + } + + await garbageCollect(); + await new Promise(r => t.step_timeout(r, 100)); + + const allShadowRootsAreAlive = elementInternals.every(eI => eI.shadowRoot instanceof ShadowRoot); + assert_true(allShadowRootsAreAlive); +}); +</script> |