Merge pull request #7743 from w3c/sync_ecf0f624705ba2f9a6046bf33bb67e4898849f65
Merge pull request #7743 from sync_ecf0f624705ba2f9a6046bf33bb67e4898849f65
diff --git a/css/css-values-3/ex-calc-expression-001-ref.html b/css/css-values-3/ex-calc-expression-001-ref.html
new file mode 100644
index 0000000..888a51e
--- /dev/null
+++ b/css/css-values-3/ex-calc-expression-001-ref.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<style>
+div {
+ width: 2ex;
+ height: 2ex;
+ background: green;
+}
+</style>
+<div></div>
diff --git a/css/css-values-3/ex-calc-expression-001.html b/css/css-values-3/ex-calc-expression-001.html
new file mode 100644
index 0000000..4eab829
--- /dev/null
+++ b/css/css-values-3/ex-calc-expression-001.html
@@ -0,0 +1,19 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS Test: Calc expression using multiple ex operands</title>
+<link rel="match" href="ex-calc-expression-001-ref.html">
+<link rel="help" href="https://drafts.csswg.org/css-values/#funcdef-calc">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<style>
+/*
+ This is a regression test for:
+ https://github.com/servo/servo/pull/18807
+ https://bugzilla.mozilla.org/show_bug.cgi?id=1407092
+ */
+div {
+ width: calc(1ex + 1ex);
+ height: calc(1ex + 1ex);
+ background: green;
+}
+</style>
+<div></div>
