basic.html 4.06 KB
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<html>
<head>
  <meta charset="UTF-8">
  <title>iron-localstorage-basic</title>
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">

  <script src="../../webcomponentsjs/webcomponents.js"></script>
  <script src="../../web-component-tester/browser.js"></script>
  <link rel="import" href="../iron-localstorage.html">

</head>
<body>

  <test-fixture id="fixture">
    <template>
      <iron-localstorage id="localstorage" name="iron-localstorage-test"></iron-localstorage>
    </template>
  </test-fixture>

  <template id="boundTemplate" is="dom-bind">
    <iron-localstorage id="boundLocal" name="iron-localstorage-test" value="{{value}}"></iron-localstorage>
  </template>

  <script>
    var storage;

    suite('basic', function() {

      setup(function() {
        window.localStorage.setItem('iron-localstorage-test', '{"foo":"bar"}');
        storage = document.getElementById('fixture').create();
        storage.flushDebouncer('reload');
      });

      teardown(function() {
        window.localStorage.removeItem('iron-localstorage-test');
      });

      test('load', function() {
        assert.isNotNull(storage.value);
        assert.equal(storage.value.foo, 'bar');
      });

      test('save', function() {
        var newValue = {'foo': 'zot'};
        storage.value = newValue;
        storage.flushDebouncer('save');
        var v = window.localStorage.getItem(storage.name);
        v = JSON.parse(v);
        assert.equal(v.foo, newValue.foo);
      });

      test('delete', function() {
        storage.value = null;
        storage.flushDebouncer('save');
        var v = window.localStorage.getItem(storage.name);
        assert.isNull(v);
        storage.value = undefined;
        storage.flushDebouncer('save');
        var v = window.localStorage.getItem(storage.name);
        assert.isNull(v);
      });

      test('event iron-localstorage-load', function(done) {
        var ls = document.createElement('iron-localstorage');
        ls.addEventListener('iron-localstorage-load', function() {
          done();
        });
        ls.name = 'iron-localstorage-test';
      });

      test('event iron-localstorage-load-empty', function(done) {
        window.localStorage.removeItem('iron-localstorage-test');

        var ls = document.createElement('iron-localstorage');
        ls.addEventListener('iron-localstorage-load-empty', function() {
          // testing recommended way to initialize localstorage
          ls.value = "Yo";
          ls.flushDebouncer('save');
          assert.equal("Yo", JSON.parse( window.localStorage.getItem('iron-localstorage-test')));
          done();
        });
        ls.name = 'iron-localstorage-test';
      });

      test('auto-save sub-properties', function() {
        var t = document.querySelector('#boundTemplate');
        var ls = document.querySelector('#boundLocal');
        var value = { foo: 'FOO', bar: 'BAR' };
        t.value = value;
        assert.equal('FOO', ls.value.foo); // value has propagated from template to storage

        ls.flushDebouncer('save');
        t.value.foo = "Yo";
        ls.flushDebouncer('save');
        var item = JSON.parse( window.localStorage.getItem('iron-localstorage-test'));
        assert.notEqual('Yo', item.foo); // did not propagate because did not use setters

        t.set('value.foo', 'BAZ!');
        ls.flushDebouncer('save');
        var item = JSON.parse( window.localStorage.getItem('iron-localstorage-test'));
        assert.equal('BAZ!', item.foo); // did propagate
        ls.value = null;
      });

    });

  </script>

</body>
</html>