diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index de6c4eb213a..f48b099d08a 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -2443,6 +2443,30 @@
             "url": "/_mozilla/css/input_placeholder_ref.html"
           }
         ],
+        "css/input_whitespace.html": [
+          {
+            "path": "css/input_whitespace.html",
+            "references": [
+              [
+                "/_mozilla/css/input_whitespace_ref.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/input_whitespace.html"
+          }
+        ],
+        "css/input_whitespace_ref.html": [
+          {
+            "path": "css/input_whitespace_ref.html",
+            "references": [
+              [
+                "/_mozilla/css/input_whitespace_ref.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/input_whitespace_ref.html"
+          }
+        ],
         "css/inset.html": [
           {
             "path": "css/inset.html",
@@ -8376,6 +8400,30 @@
           "url": "/_mozilla/css/input_placeholder_ref.html"
         }
       ],
+      "css/input_whitespace.html": [
+        {
+          "path": "css/input_whitespace.html",
+          "references": [
+            [
+              "/_mozilla/css/input_whitespace_ref.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/input_whitespace.html"
+        }
+      ],
+      "css/input_whitespace_ref.html": [
+        {
+          "path": "css/input_whitespace_ref.html",
+          "references": [
+            [
+              "/_mozilla/css/input_whitespace_ref.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/input_whitespace_ref.html"
+        }
+      ],
       "css/inset.html": [
         {
           "path": "css/inset.html",
diff --git a/tests/wpt/mozilla/tests/css/input_whitespace.html b/tests/wpt/mozilla/tests/css/input_whitespace.html
new file mode 100644
index 00000000000..44f26751eac
--- /dev/null
+++ b/tests/wpt/mozilla/tests/css/input_whitespace.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<html>
+<head>
+<meta charset="utf-8">
+<title></title>
+<link rel="match" href="input_whitespace_ref.html">
+</head>
+<body>
+<div><input type="text" size="30" value="placeholder"></div>
+<div><input type="text" size="30" value="place holder"></div>
+<div><input type="text" size="30" value="place    holder"></div>
+<textarea rows="7" cols="50">a a  a   a    a
+
+b
+
+
+b
+</textarea>
+</body>
+</html>
\ No newline at end of file
diff --git a/tests/wpt/mozilla/tests/css/input_whitespace_ref.html b/tests/wpt/mozilla/tests/css/input_whitespace_ref.html
new file mode 100644
index 00000000000..6be82abad19
--- /dev/null
+++ b/tests/wpt/mozilla/tests/css/input_whitespace_ref.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<html>
+<head>
+<meta charset="utf-8">
+<title></title>
+<link rel="match" href="input_whitespace_ref.html">
+</head>
+<body>
+<div><input type="text" size="30" value="placeholder"></div>
+<div><input type="text" size="30" value="place&nbsp;holder"></div>
+<div><input type="text" size="30" value="place&nbsp;&nbsp;&nbsp;&nbsp;holder"></div>
+<textarea rows="7" cols="50">a&nbsp;a&nbsp;&nbsp;a&nbsp;&nbsp;&nbsp;a&nbsp;&nbsp;&nbsp;&nbsp;a
+&nbsp;
+b
+&nbsp;
+&nbsp;
+b
+</textarea>
+</body>
+</html>
\ No newline at end of file
