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<html>

<head>

  <title>iron-collapse-flex</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <script src="../../webcomponentsjs/webcomponents-lite.js"></script>
  <script src="../../web-component-tester/browser.js"></script>
  <script src="../../test-fixture/test-fixture-mocha.js"></script>

  <link rel="import" href="../../iron-flex-layout/iron-flex-layout-classes.html">
  <link rel="import" href="../../test-fixture/test-fixture.html">
  <link rel="import" href="../iron-collapse.html">

  <style is="custom-style" include="iron-flex">
  </style>

</head>
<body>

  <test-fixture id="test">
    <template>
      <div id="container" class="layout vertical" style="height: 200px">
        <iron-collapse id="collapse" opened style="flex: 1 0 auto">
          <div style="height:100px;">
            Lorem ipsum
          </div>
        </iron-collapse>
      </div>
    </template>
  </test-fixture>

  <script>

    suite('flex', function() {

      var container;
      var collapse;
      var collapseHeight;

      setup(function() {
        container = fixture('test');
        collapse = container.querySelector('iron-collapse');
        collapseHeight = getComputedStyle(collapse).height;
      });

      test('default opened height', function() {
        assert.equal(collapse.style.height, '');
      });

      test('set opened to false triggers animation', function(done) {
        collapse.opened = false;
        // Animation got enabled.
        assert.notEqual(collapse.style.transitionDuration, '0s');
        collapse.addEventListener('transitionend', function() {
          // Animation disabled.
          assert.equal(collapse.style.transitionDuration, '0s');
          done();
        });
      });

      test('enableTransition(false) disables animations', function() {
        collapse.enableTransition(false);
        assert.isTrue(collapse.noAnimation, '`noAnimation` is true');
        // trying to animate the size update
        collapse.updateSize('0px', true);
        // Animation immediately disabled.
        assert.equal(collapse.style.maxHeight, '0px');
      });

      test('set opened to false, then to true', function(done) {
        // this listener will be triggered twice (every time `opened` changes)
        collapse.addEventListener('transitionend', function() {
          if (collapse.opened) {
            // Check finalSize after animation is done.
            assert.equal(collapse.style.maxHeight, '');
            done();
          } else {
            // Check if size is still 0px.
            assert.equal(collapse.style.maxHeight, '0px');
            // Trigger 2nd toggle.
            collapse.opened = true;
            // Size should be immediately set.
            assert.equal(collapse.style.maxHeight, collapseHeight);
          }
        });
        // Trigger 1st toggle.
        collapse.opened = false;
        // Size should be immediately set.
        assert.equal(collapse.style.maxHeight, '0px');
      });

      test('opened changes trigger iron-resize', function() {
        var spy = sinon.stub();
        collapse.addEventListener('iron-resize', spy);
        // No animations for faster test.
        collapse.noAnimation = true;
        collapse.opened = false;
        assert.isTrue(spy.calledOnce, 'iron-resize was fired');
      });

      test('overflow is hidden while animating', function(done) {
        collapse.addEventListener('transitionend', function() {
          // Should still be hidden.
          assert.equal(getComputedStyle(collapse).overflow, 'hidden');
          done();
        });
        assert.equal(getComputedStyle(collapse).overflow, 'visible');
        collapse.opened = false;
        // Immediately updated style.
        assert.equal(getComputedStyle(collapse).overflow, 'hidden');
      });

      test('toggle horizontal updates size', function() {
        collapse.horizontal = false;
        assert.equal(collapse.style.width, '');
        assert.equal(collapse.style.maxHeight, '');
        assert.equal(collapse.style.transitionProperty, 'max-height');

        collapse.horizontal = true;
        assert.equal(collapse.style.maxWidth, '');
        assert.equal(collapse.style.height, '');
        assert.equal(collapse.style.transitionProperty, 'max-width');
      });

      test('change size with updateSize', function(done) {
        collapse.addEventListener('transitionend', function() {
          // size should be kept after transition
          assert.equal(collapse.style.maxHeight, "123px");
          done();
        });
        collapse.updateSize("123px", true);
      });

    });

  </script>

</body>

</html>