1 files changed, 63 insertions, 0 deletions
diff --git a/dom/url/tests/test_urlSearchParams_sorting.html b/dom/url/tests/test_urlSearchParams_sorting.html
new file mode 100644
index 0000000000..a608e8bc13
--- /dev/null
+++ b/dom/url/tests/test_urlSearchParams_sorting.html
@@ -0,0 +1,63 @@
+
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Test for URLSearchParams.sort()</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript">
+
+function compareArray(a, b) {
+  is(a.length, b.length, "Length matches");
+  for (let i = 0; i < a.length; ++i) {
+    is(a[i], b[i], "Values " + i + " match");
+  }
+}
+
+[
+  {
+    "input": "z=b&a=b&z=a&a=a",
+    "output": [["a", "b"], ["a", "a"], ["z", "b"], ["z", "a"]],
+  },
+  {
+    "input": "\uFFFD=x&\uFFFC&\uFFFD=a",
+    "output": [["\uFFFC", ""], ["\uFFFD", "x"], ["\uFFFD", "a"]],
+  },
+  {
+    "input": "ﬃ&🌈", // 🌈 > code point, but < code unit because two code units
+    "output": [["🌈", ""], ["ﬃ", ""]],
+  },
+  {
+    "input": "é&e\uFFFD&e\u0301",
+    "output": [["e\u0301", ""], ["e\uFFFD", ""], ["é", ""]],
+  },
+  {
+    "input": "z=z&a=a&z=y&a=b&z=x&a=c&z=w&a=d&z=v&a=e&z=u&a=f&z=t&a=g",
+    "output": [["a", "a"], ["a", "b"], ["a", "c"], ["a", "d"], ["a", "e"], ["a", "f"], ["a", "g"], ["z", "z"], ["z", "y"], ["z", "x"], ["z", "w"], ["z", "v"], ["z", "u"], ["z", "t"]],
+  },
+].forEach((val) => {
+  info("Run test: " + JSON.stringify(val) + "\n");
+
+  let params = new URLSearchParams(val.input);
+  params.sort();
+
+  let i = 0;
+  for (let param of params) {
+    compareArray(param, val.output[i++]);
+  }
+
+  let url = new URL("?" + val.input, "https://example/");
+  url.searchParams.sort();
+  params = new URLSearchParams(url.search);
+  i = 0;
+  for (let param of params) {
+    compareArray(param, val.output[i++]);
+  }
+});
+
+</script>
+</body>
+</html>