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Diffstat (limited to 'testing/web-platform/tests/html/semantics/interactive-elements/the-dialog-element/dialog-overlay.html')
-rw-r--r-- | testing/web-platform/tests/html/semantics/interactive-elements/the-dialog-element/dialog-overlay.html | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/interactive-elements/the-dialog-element/dialog-overlay.html b/testing/web-platform/tests/html/semantics/interactive-elements/the-dialog-element/dialog-overlay.html new file mode 100644 index 0000000000..9cd2426b8c --- /dev/null +++ b/testing/web-platform/tests/html/semantics/interactive-elements/the-dialog-element/dialog-overlay.html @@ -0,0 +1,36 @@ +<!doctype html> +<title>dialog: overlay</title> +<link rel="help" href="https://html.spec.whatwg.org/multipage/interactive-elements.html#the-dialog-element"> +<link rel="help" href="https://drafts.csswg.org/css-position-4/#overlay"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<dialog id="dialog"></dialog> +<script> + const dialog = document.getElementById("dialog"); + + test(() => { + assert_equals(getComputedStyle(dialog).overlay, "none", + "Computed overlay"); + assert_equals(getComputedStyle(dialog, "::backdrop").overlay, "none", + "Computed overlay for ::backdrop"); + }, "dialog computed overlay initially 'none'"); + + test(() => { + dialog.showModal(); + + assert_equals(getComputedStyle(dialog).overlay, "auto", + "Computed overlay on open dialog"); + // ::backdrop pseudo element is always rendered in the top layer when its + // originating element is. It does not get its overlay property changed, + // though. + assert_equals(getComputedStyle(dialog, "::backdrop").overlay, "none", + "Computed overlay for ::backdrop"); + + dialog.close(); + + assert_equals(getComputedStyle(dialog).overlay, "none", + "Computed overlay on closed dialog"); + assert_equals(getComputedStyle(dialog, "::backdrop").overlay, "none", + "Computed overlay for ::backdrop"); + }, "Opening and closing a modal dialog changes computed overlay to 'auto' and back to 'none'"); +</script> |