diff -r 000000000000 -r 6474c204b198 dom/workers/test/urlSearchParams_worker.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/workers/test/urlSearchParams_worker.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,211 @@
+function ok(a, msg) {
+  dump("OK: " + !!a + "  =>  " + a + " " + msg + "\n");
+  postMessage({type: 'status', status: !!a, msg: a + ": " + msg });
+}
+
+function is(a, b, msg) {
+  dump("IS: " + (a===b) + "  =>  " + a + " | " + b + " " + msg + "\n");
+  postMessage({type: 'status', status: a === b, msg: a + " === " + b + ": " + msg });
+}
+
+onmessage = function() {
+  status = false;
+  try {
+    if ((URLSearchParams instanceof Object)) {
+      status = true;
+    }
+  } catch(e) {
+  }
+  ok(status, "URLSearchParams in workers \\o/");
+
+  function testSimpleURLSearchParams() {
+    var u = new URLSearchParams();
+    ok(u, "URLSearchParams created");
+    is(u.has('foo'), false, 'URLSearchParams.has(foo)');
+    is(u.get('foo'), '', 'URLSearchParams.get(foo)');
+    is(u.getAll('foo').length, 0, 'URLSearchParams.getAll(foo)');
+
+    u.append('foo', 'bar');
+    is(u.has('foo'), true, 'URLSearchParams.has(foo)');
+    is(u.get('foo'), 'bar', 'URLSearchParams.get(foo)');
+    is(u.getAll('foo').length, 1, 'URLSearchParams.getAll(foo)');
+
+    u.set('foo', 'bar2');
+    is(u.get('foo'), 'bar2', 'URLSearchParams.get(foo)');
+    is(u.getAll('foo').length, 1, 'URLSearchParams.getAll(foo)');
+
+    is(u + "", "foo=bar2", "stringify");
+
+    u.delete('foo');
+
+    runTest();
+  }
+
+  function testCopyURLSearchParams() {
+    var u = new URLSearchParams();
+    ok(u, "URLSearchParams created");
+    u.append('foo', 'bar');
+
+    var uu = new URLSearchParams(u);
+    is(uu.get('foo'), 'bar', 'uu.get()');
+
+    u.append('foo', 'bar2');
+    is(u.getAll('foo').length, 2, "u.getAll()");
+    is(uu.getAll('foo').length, 1, "uu.getAll()");
+
+    runTest();
+  }
+
+  function testParserURLSearchParams() {
+    var checks = [
+      { input: '', data: {} },
+      { input: 'a', data: { 'a' : [''] } },
+      { input: 'a=b', data: { 'a' : ['b'] } },
+      { input: 'a=', data: { 'a' : [''] } },
+      { input: '=b', data: { '' : ['b'] } },
+      { input: '&', data: {} },
+      { input: '&a', data: { 'a' : [''] } },
+      { input: 'a&', data: { 'a' : [''] } },
+      { input: 'a&a', data: { 'a' : ['', ''] } },
+      { input: 'a&b&c', data: { 'a' : [''], 'b' : [''], 'c' : [''] } },
+      { input: 'a=b&c=d', data: { 'a' : ['b'], 'c' : ['d'] } },
+      { input: 'a=b&c=d&', data: { 'a' : ['b'], 'c' : ['d'] } },
+      { input: '&&&a=b&&&&c=d&', data: { 'a' : ['b'], 'c' : ['d'] } },
+      { input: 'a=a&a=b&a=c', data: { 'a' : ['a', 'b', 'c'] } },
+      { input: 'a==a', data: { 'a' : ['=a'] } },
+      { input: 'a=a+b+c+d', data: { 'a' : ['a b c d'] } },
+      { input: '%=a', data: { '%' : ['a'] } },
+      { input: '%a=a', data: { '%a' : ['a'] } },
+      { input: '%a_=a', data: { '%a_' : ['a'] } },
+      { input: '%61=a', data: { 'a' : ['a'] } },
+      { input: '%=a', data: { '%' : ['a'] } },
+      { input: '%a=a', data: { '%a' : ['a'] } },
+      { input: '%a_=a', data: { '%a_' : ['a'] } },
+      { input: '%61=a', data: { 'a' : ['a'] } },
+      { input: '%61+%4d%4D=', data: { 'a MM' : [''] } },
+    ];
+
+    for (var i = 0; i < checks.length; ++i) {
+      var u = new URLSearchParams(checks[i].input);
+
+      var count = 0;
+      for (var key in checks[i].data) {
+        ++count;
+        ok(u.has(key), "key " + key + " found");
+
+        var all = u.getAll(key);
+        is(all.length, checks[i].data[key].length, "same number of elements");
+
+        for (var k = 0; k < all.length; ++k) {
+          is(all[k], checks[i].data[key][k], "value matches");
+        }
+      }
+    }
+
+    runTest();
+  }
+
+  function testURL() {
+    var url = new URL('http://www.example.net?a=b&c=d');
+    ok(url.searchParams, "URL searchParams exists!");
+    ok(url.searchParams.has('a'), "URL.searchParams.has('a')");
+    is(url.searchParams.get('a'), 'b', "URL.searchParams.get('a')");
+    ok(url.searchParams.has('c'), "URL.searchParams.has('c')");
+    is(url.searchParams.get('c'), 'd', "URL.searchParams.get('c')");
+
+    url.searchParams.set('e', 'f');
+    ok(url.href.indexOf('e=f') != 1, 'URL right');
+
+    var u = new URLSearchParams();
+    u.append('foo', 'bar');
+    url.searchParams = u;
+    is(url.searchParams, u, "URL.searchParams is the same object");
+    is(url.searchParams.get('foo'), 'bar', "URL.searchParams.get('foo')");
+    is(url.href, 'http://www.example.net/?foo=bar', 'URL right');
+
+    try {
+      url.searchParams = null;
+      ok(false, "URLSearchParams is not nullable");
+    } catch(e) {
+      ok(true, "URLSearchParams is not nullable");
+    }
+
+    var url2 = new URL('http://www.example.net?e=f');
+    url.searchParams = url2.searchParams;
+    is(url.searchParams, url2.searchParams, "URL.searchParams is not the same object");
+    is(url.searchParams.get('e'), 'f', "URL.searchParams.get('e')");
+
+    url.href = "http://www.example.net?bar=foo";
+    is(url.searchParams.get('bar'), 'foo', "URL.searchParams.get('bar')");
+
+    runTest();
+  }
+
+  function testEncoding() {
+    var encoding = [ [ '1', '1' ],
+                     [ 'a b', 'a+b' ],
+                     [ '<>', '%3C%3E' ],
+                     [ '\u0541', '%D5%81'] ];
+
+    for (var i = 0; i < encoding.length; ++i) {
+      var a = new URLSearchParams();
+      a.set('a', encoding[i][0]);
+
+      var url = new URL('http://www.example.net');
+      url.searchParams = a;
+      is(url.href, 'http://www.example.net/?a=' + encoding[i][1]);
+
+      var url2 = new URL(url.href);
+      is(url2.searchParams.get('a'), encoding[i][0], 'a is still there');
+    }
+
+    runTest();
+  }
+
+  function testMultiURL() {
+    var a = new URL('http://www.example.net?a=b&c=d');
+    var b = new URL('http://www.example.net?e=f');
+    ok(a.searchParams.has('a'), "a.searchParams.has('a')");
+    ok(a.searchParams.has('c'), "a.searchParams.has('c')");
+    ok(b.searchParams.has('e'), "b.searchParams.has('e')");
+
+    var u = new URLSearchParams();
+    a.searchParams = b.searchParams = u;
+    is(a.searchParams, u, "a.searchParams === u");
+    is(b.searchParams, u, "b.searchParams === u");
+    ok(!a.searchParams.has('a'), "!a.searchParams.has('a')");
+    ok(!a.searchParams.has('c'), "!a.searchParams.has('c')");
+    ok(!b.searchParams.has('e'), "!b.searchParams.has('e')");
+
+    u.append('foo', 'bar');
+    is(a.searchParams.get('foo'), 'bar', "a has foo=bar");
+    is(b.searchParams.get('foo'), 'bar', "b has foo=bar");
+    is(a + "", b + "", "stringify a == b");
+
+    a.search = "?bar=foo";
+    is(a.searchParams.get('bar'), 'foo', "a has bar=foo");
+    is(b.searchParams.get('bar'), 'foo', "b has bar=foo");
+
+    runTest();
+  }
+  var tests = [
+    testSimpleURLSearchParams,
+    testCopyURLSearchParams,
+    testParserURLSearchParams,
+    testURL,
+    testEncoding,
+    testMultiURL
+  ];
+
+  function runTest() {
+    if (!tests.length) {
+      postMessage({type: 'finish' });
+      return;
+    }
+
+    var test = tests.shift();
+    test();
+  }
+
+  runTest();
+}