Part 2 - Use ColumnSetWrapper's effective computed content block-size to impose constraint for ColumnSet.
Run broken-column-rule-1.html with column-span enabled because it was
regressed by Bug 1548100 Part 2, but fixed by this patch.
Differential Revision: https://phabricator.services.mozilla.com/D41907
bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1569701
gecko-commit: e9611b9cff9a7a9bf7ce21a1384d017bf9c02fbe
gecko-integration-branch: autoland
gecko-reviewers: dbaron
diff --git a/css/css-multicol/multicol-rule-nested-balancing-003-ref.html b/css/css-multicol/multicol-rule-nested-balancing-003-ref.html
new file mode 100644
index 0000000..573afe6
--- /dev/null
+++ b/css/css-multicol/multicol-rule-nested-balancing-003-ref.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html>
+ <meta charset="utf-8">
+ <title>CSS Multi-column Layout Test Reference: Test the column rules' block-size with nested balancing multicol container</title>
+ <link rel="author" title="Ting-Yu Lin" href="tlin@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org/">
+
+ <style>
+ .outer {
+ column-count: 2;
+ column-rule: 6px solid black;
+ column-fill: auto;
+ width: 400px;
+ height: 250px;
+ }
+ .inner {
+ column-count: 2;
+ column-rule: 3px solid gray;
+ column-fill: auto;
+ height: 200px;
+ }
+ .inner-block {
+ background-color: lightblue;
+ height: 400px;
+ }
+ .space {
+ height: 50px;
+ }
+ </style>
+
+ <article class="outer">
+ <article class="inner">
+ <div class="inner-block"></div>
+ </article>
+ <div class="space"></div>
+ <article class="inner">
+ <div class="inner-block"></div>
+ </article>
+ <div class="space"></div>
+ </article>
+</html>
diff --git a/css/css-multicol/multicol-rule-nested-balancing-003.html b/css/css-multicol/multicol-rule-nested-balancing-003.html
new file mode 100644
index 0000000..3dea425
--- /dev/null
+++ b/css/css-multicol/multicol-rule-nested-balancing-003.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+ <meta charset="utf-8">
+ <title>CSS Multi-column Layout Test: Test the column rules' block-size with nested balancing multicol container</title>
+ <link rel="author" title="Ting-Yu Lin" href="tlin@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org/">
+ <link rel="help" href="https://drafts.csswg.org/css-multicol-1/#cf">
+ <link rel="help" href="https://drafts.csswg.org/css-multicol-1/#column-gaps-and-rules">
+ <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/2309">
+ <link rel="match" href="multicol-rule-nested-balancing-003-ref.html">
+ <meta name="assert" content="This test verifies that the column-rules are extended to the content block-end edges of their corresponding inner and outer multicol container.">
+
+ <style>
+ .outer {
+ column-count: 2;
+ column-rule: 6px solid black;
+ width: 400px;
+ height: 250px;
+ }
+ .inner {
+ column-count: 2;
+ column-rule: 3px solid gray;
+ height: 400px;
+ }
+ .inner-block {
+ background-color: lightblue;
+ height: 800px;
+ }
+ </style>
+
+ <article class="outer">
+ <article class="inner">
+ <div class="inner-block"></div>
+ </article>
+ </article>
+</html>
