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+<!doctype html>
+<!--
+@license
+Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+<html>
+<head>
+  <title>iron-location</title>
+
+  <script src="../../webcomponentsjs/webcomponents-lite.js"></script>
+  <script src="../../web-component-tester/browser.js"></script>
+
+  <link rel="import" href="../../polymer/polymer.html">
+  <link rel="import" href="../../promise-polyfill/promise-polyfill.html">
+  <link rel="import" href="../iron-query-params.html">
+</head>
+<body>
+
+  <test-fixture id="BasicQueryParams">
+    <template>
+      <iron-query-params></iron-query-params>
+    </template>
+  </test-fixture>
+
+  <script>
+    'use strict';
+
+    suite('<iron-query-params>', function () {
+
+      var paramsElem;
+      setup(function() {
+        paramsElem = fixture('BasicQueryParams');
+      });
+
+      test('basic functionality with ?key=value params', function() {
+        // Check initialization
+        expect(paramsElem.paramsString).to.be.eq('');
+        expect(paramsElem.paramsObject).to.deep.eq({});
+
+        // Check the mapping from paramsString to paramsObject.
+        paramsElem.paramsString = 'greeting=hello&target=world';
+        expect(paramsElem.paramsObject).to.deep.equal(
+            {greeting: 'hello', target: 'world'});
+
+        // Check the mapping from paramsObject back to paramsString.
+        paramsElem.set('paramsObject.another', 'key');
+        expect(paramsElem.paramsString).to.be.equal(
+            'greeting=hello&target=world&another=key');
+      });
+      test('encoding of params', function() {
+        var mappings = [
+          {
+            string: 'a=b',
+            object: {'a': 'b'}
+          },
+          {
+            string: 'debug&ok',
+            object: {'debug': '', 'ok': ''}
+          },
+          {
+            string: 'monster%20kid%3A=%F0%9F%98%BF&quotes=%27%27',
+            object: {'monster kid:': '😿', 'quotes': '\'\''}
+          },
+          {
+            string: 'yes%2C%20ok?%20what%20is%20up%20with%20%CB%9Athiiis%CB%9A=%E2%98%83',
+            object: {'yes, ok? what is up with ˚thiiis˚': '☃'}
+          },
+        ];
+
+        mappings.forEach(function(mapping) {
+          // Clear
+          paramsElem.paramsObject = {};
+          expect(paramsElem.paramsString).to.be.equal('');
+
+          // Test going from string to object
+          paramsElem.paramsString = mapping.string;
+          expect(paramsElem.paramsObject).to.deep.equal(mapping.object);
+
+          // Clear again.
+          paramsElem.paramsObject = {};
+          expect(paramsElem.paramsString).to.be.equal('');
+
+          // Test going from object to string
+          paramsElem.paramsObject = mapping.object;
+          expect(paramsElem.paramsString).to.be.equal(mapping.string);
+        });
+      });
+      test('query strings with alternative encodings', function() {
+        // Check the mapping for querystrings with + instead of %20.
+        paramsElem.paramsString = 'key=value+with+spaces';
+        expect(paramsElem.paramsObject).to.deep.equal(
+            {key: 'value with spaces'});
+      });
+    });
+
+  </script>
+</body>