1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/mathml/presentation-markup/operators/operator-dictionary-empty-and-three-chars-ref.html b/testing/web-platform/tests/mathml/presentation-markup/operators/operator-dictionary-empty-and-three-chars-ref.html
new file mode 100644
index 0000000000..2cbed12940
--- /dev/null
+++ b/testing/web-platform/tests/mathml/presentation-markup/operators/operator-dictionary-empty-and-three-chars-ref.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8"/>
+    <title>Spacing of empty and three-char operators (reference)</title>
+    <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+    <style>
+      math {
+        font: 50px/1 Ahem;
+      }
+      mn:first-child {
+        color: blue;
+      }
+      mn:last-child {
+        color: yellow;
+      }
+    </style>
+  </head>
+  <body>
+
+    <p><math><mn>_</mn><mo lspace="0.2777777777777778em" rspace="0.2777777777777778em">_</mo><mn>_</mn></math></p>
+
+    <p>The spacing after the blue squares and before the yellow squares should be the same as the above reference:</p>
+
+    <p><math><mn>_</mn><mo lspace="0.2777777777777778em" rspace="0.2777777777777778em"><!-- empty --></mo><mn>_</mn></math></p>
+    <p><math><mn>_</mn><mo lspace="0.2777777777777778em" rspace="0.2777777777777778em">...</mo><mn>_</mn></math></p>
+    <p><math><mn>_</mn><mo lspace="0.2777777777777778em" rspace="0.2777777777777778em">lim</mo><mn>_</mn></math>
+    <p><math><mn>_</mn><mo lspace="0.2777777777777778em" rspace="0.2777777777777778em">max</mo><mn>_</mn></math>
+    <p><math><mn>_</mn><mo lspace="0.2777777777777778em" rspace="0.2777777777777778em">min</mo><mn>_</mn></math>
+    <p><math><mn>_</mn><mo lspace="0.2777777777777778em" rspace="0.2777777777777778em">|||</mo><mn>_</mn></math>
+  </body>
+</html>