Bug 1935176 [wpt PR 49524] - Test that setting background-color on ::column has no effect, a=testonly

Automatic update from web-platform-tests
Test that setting background-color on ::column has no effect

Bug: 365680822
Change-Id: Iea120f4768f8506d2caec9aa1dd552b150ba3768
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6068729
Commit-Queue: Rune Lillesveen <futharkchromium.org>
Reviewed-by: Morten Stenshorne <mstenshochromium.org>
Cr-Commit-Position: refs/heads/main{#1391670}

--

wpt-commits: 1943797cd0568b7e0088b77a8e499a56a53870b5
wpt-pr: 49524

UltraBlame original commit: d9a16c9173b585ecc19077147ed53910b3fc807c

Author: marco-c

testing/web-platform/tests/css/css-multicol/column-pseudo-background-color-ref.html

@@ -0,0 +1,33 @@
+<
+!
+DOCTYPE
+html
+>
+<
+title
+>
+CSS
+Test
+Reference
+<
+/
+title
+>
+<
+p
+>
+You
+should
+see
+no
+red
+or
+"
+FAIL
+"
+below
+.
+<
+/
+p
+>

testing/web-platform/tests/css/css-multicol/column-pseudo-background-color.html

@@ -0,0 +1,198 @@
+<
+!
+DOCTYPE
+html
+>
+<
+title
+>
+CSS
+Multi
+-
+column
+Layout
+Test
+:
+:
+:
+column
+background
+-
+color
+has
+no
+effect
+<
+/
+title
+>
+<
+link
+rel
+=
+"
+help
+"
+href
+=
+"
+https
+:
+/
+/
+drafts
+.
+csswg
+.
+org
+/
+css
+-
+multicol
+-
+2
+/
+#
+column
+-
+pseudo
+"
+>
+<
+link
+rel
+=
+"
+match
+"
+href
+=
+"
+column
+-
+pseudo
+-
+background
+-
+color
+-
+ref
+.
+html
+"
+>
+<
+style
+>
+supports
+not
+selector
+(
+:
+:
+column
+)
+{
+#
+multicol
+:
+:
+before
+{
+content
+:
+"
+FAIL
+"
+;
+}
+}
+#
+multicol
+{
+width
+:
+100px
+;
+height
+:
+100px
+;
+column
+-
+count
+:
+1
+;
+}
+#
+multicol
+:
+:
+column
+{
+background
+-
+color
+:
+red
+;
+}
+#
+content
+{
+width
+:
+100px
+;
+height
+:
+100px
+;
+}
+<
+/
+style
+>
+<
+p
+>
+You
+should
+see
+no
+red
+or
+"
+FAIL
+"
+below
+.
+<
+/
+p
+>
+<
+div
+id
+=
+"
+multicol
+"
+>
+<
+div
+id
+=
+"
+content
+"
+>
+<
+/
+div
+>
+<
+/
+div
+>