diff --git a/tests/files/urltestdata.json b/tests/files/urltestdata.json
index 287a84b..69767a2 100644
--- a/tests/files/urltestdata.json
+++ b/tests/files/urltestdata.json
@@ -9529,5 +9529,160 @@
     "pathname": "",
     "search": "",
     "hash": ""
+  },
+  "Scheme relative path starting with multiple slashes",
+  {
+    "input": "///test",
+    "base": "http://example.org/",
+    "href": "http://test/",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "test",
+    "hostname": "test",
+    "port": "",
+    "pathname": "/",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "///\\//\\//test",
+    "base": "http://example.org/",
+    "href": "http://test/",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "test",
+    "hostname": "test",
+    "port": "",
+    "pathname": "/",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "///example.org/path",
+    "base": "http://example.org/",
+    "href": "http://example.org/path",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "example.org",
+    "hostname": "example.org",
+    "port": "",
+    "pathname": "/path",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "///example.org/../path",
+    "base": "http://example.org/",
+    "href": "http://example.org/path",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "example.org",
+    "hostname": "example.org",
+    "port": "",
+    "pathname": "/path",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "///example.org/../../",
+    "base": "http://example.org/",
+    "href": "http://example.org/",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "example.org",
+    "hostname": "example.org",
+    "port": "",
+    "pathname": "/",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "///example.org/../path/../../",
+    "base": "http://example.org/",
+    "href": "http://example.org/",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "example.org",
+    "hostname": "example.org",
+    "port": "",
+    "pathname": "/",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "///example.org/../path/../../path",
+    "base": "http://example.org/",
+    "href": "http://example.org/path",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "example.org",
+    "hostname": "example.org",
+    "port": "",
+    "pathname": "/path",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "/\\/\\//example.org/../path",
+    "base": "http://example.org/",
+    "href": "http://example.org/path",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "example.org",
+    "hostname": "example.org",
+    "port": "",
+    "pathname": "/path",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "///abcdef/../",
+    "base": "file:///",
+    "href": "file:///",
+    "protocol": "file:",
+    "username": "",
+    "password": "",
+    "host": "",
+    "hostname": "",
+    "port": "",
+    "pathname": "/",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "/\\//\\/a/../",
+    "base": "file:///",
+    "href": "file://////",
+    "protocol": "file:",
+    "username": "",
+    "password": "",
+    "host": "",
+    "hostname": "",
+    "port": "",
+    "pathname": "////",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "//a/../",
+    "base": "file:///",
+    "href": "file://a/",
+    "protocol": "file:",
+    "username": "",
+    "password": "",
+    "host": "a",
+    "hostname": "a",
+    "port": "",
+    "pathname": "/",
+    "search": "",
+    "hash": ""
   }
 ]