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diff --git a/layout/reftests/css-grid/grid-auto-min-sizing-percent-001.html b/layout/reftests/css-grid/grid-auto-min-sizing-percent-001.html
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+++ b/layout/reftests/css-grid/grid-auto-min-sizing-percent-001.html
@@ -0,0 +1,109 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>CSS Grid Test: Testing 'auto' min-sizing with percentage sizes</title>
+  <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1176775">
+  <link rel="help" href="https://drafts.csswg.org/css-grid/#min-size-auto">
+  <link rel="match" href="grid-auto-min-sizing-percent-001-ref.html">
+  <style type="text/css">
+body,html { color:black; background:white; font-size:10px; padding:0; margin:0; }
+
+.wrap {
+  float: left;
+}
+
+.grid {
+  display: grid;
+  float: left;
+  grid-template-columns: minmax(auto,0) 1fr;
+  grid-auto-rows: 10px;
+  border: 1px solid;
+}
+
+.item {
+  grid-row: 1 / 2;
+  grid-column: 1 / 2;
+  background:lime;
+  min-height:10px;
+}
+
+.item2 {
+  grid-row: 2 / 3;
+  grid-column: 1 / 2;
+  min-width:0;
+  min-height:10px;
+  justify-self:stretch;
+  background:grey;
+}
+
+br { clear:both; }
+
+#px-border      .item { border-left:20px solid blue; }
+#percent-border .item { padding-left:10%; }
+
+  </style>
+</head>
+<body>
+
+<table border="1">
+<tr><th>no border/padding/margin</th><th>'border-left:20px'</th><th>'padding-left:10%'</th>
+<tr><td id="no-border"></td><td id="px-border"></td><td id="percent-border"></td>
+</tr></table>
+
+<script>
+var styles = [
+"width:50%",
+"width:50%; max-width:1px",
+"width:50%; min-width:100px",
+"width:calc(100px)",
+"width:calc(100px + 50%)",
+"width:100px; padding-right:50%",
+"width:calc(100px + 50%); min-width:10px",
+"width:calc(10px + 50%); min-width:100px",
+"width:calc(75px + 50%); min-width:100px",
+"width:calc(100px + 50%); max-width:1px",
+"width:calc(100px + 50%); max-width:150px",
+"min-width:50%",
+"min-width:50%; max-width:1px",
+"min-width:50%; width:100px",
+"min-width:calc(100px)",
+"min-width:calc(100px + 50%)",
+"min-width:100px; padding-right:50%",
+"min-width:calc(100px + 50%); width:10px",
+"min-width:calc(10px + 50%); width:100px",
+"min-width:calc(75px + 50%); width:100px",
+"min-width:calc(100px + 50%); max-width:1px",
+"min-width:calc(100px + 50%); max-width:150px",
+];
+var containers = [ "no-border", "px-border", "percent-border" ];
+for (var i = 0; i < containers.length; ++i) {
+  var c = document.querySelector("#"+containers[i]);
+  for (var j = 0; j < styles.length; ++j) {
+    c.appendChild(document.createElement('br'));
+    c.appendChild(document.createTextNode(styles[j]));
+    c.appendChild(document.createElement('br'));
+    var item = document.createElement('div');
+    item.setAttribute("class","item");
+    item.setAttribute("style", styles[j]);
+    var item2 = document.createElement('div');
+    item2.setAttribute("class","item2");
+    var grid = document.createElement('div');
+    grid.setAttribute("class","grid");
+    grid.appendChild(item);
+    grid.appendChild(item2);
+    var wrap = document.createElement('div');
+    wrap.setAttribute("class","wrap");
+    wrap.appendChild(grid);
+    c.appendChild(wrap);
+  }
+}
+</script>
+
+
+
+</body>
+</html>