Bug 1577492 [wpt PR 18747] - Only check that "display: contents" comp…

…utes to none for MathML child…, a=testonly

Automatic update from web-platform-tests
Only check that "display: contents" computes to none for MathML child… (#18747)

* Only check that "display: contents" computes to none for MathML children.

* do not remove space

--

wpt-commits: e63a246b128875ed7ff0db69a9fbaa7548cc0360
wpt-pr: 18747

UltraBlame original commit: e3964712d0025a6e8dff78280ca3520a2e77e972

testing/web-platform/tests/mathml/relations/css-styling/not-participating-to-parent-layout.html

@@ -418,6 +418,80 @@
 elementContainer
 )
 ;
+if
+(
+style
+=
+=
+=
+"
+display
+:
+contents
+"
+&
+&
+!
+element
+.
+classList
+.
+contains
+(
+"
+mathml
+-
+container
+"
+)
+)
+{
+/
+/
+A
+"
+display
+:
+contents
+"
+MathML
+child
+is
+not
+participating
+to
+/
+/
+parent
+layout
+because
+its
+computed
+style
+is
+"
+display
+:
+none
+"
+.
+/
+/
+If
+we
+cannot
+append
+a
+MathML
+child
+then
+skip
+that
+test
+.
+return
+;
+}
 FragmentHelper
 .
 forceNonEmptyElement