<!DOCTYPE html>
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@license
Copyright (C) 2018 The Android Open Source Project

Licensed under the Apache License, Version 2.0 (the "License");
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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>gr-hovercard</title>

<script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../../test/common-test-setup.html"/>
<script src="../../../bower_components/iron-test-helpers/mock-interactions.js"></script>

<link rel="import" href="gr-hovercard.html">

<script>void(0);</script>

<button id="foo">Hello</button>
<test-fixture id="basic">
  <template>
    <gr-hovercard for="foo" id="bar"></gr-hovercard>
  </template>
</test-fixture>

<script>
  suite('gr-hovercard tests', () => {
    let element;
    let sandbox;
    const TRANSITION_TIME = 200;

    setup(() => {
      sandbox = sinon.sandbox.create();
      element = fixture('basic');
    });

    teardown(() => { sandbox.restore(); });

    test('updatePosition', () => {
      // Test that the correct style properties have at least been set.
      element.position = 'bottom';
      element.updatePosition();
      assert.typeOf(element.style.getPropertyValue('left'), 'string');
      assert.typeOf(element.style.getPropertyValue('top'), 'string');
      assert.typeOf(element.style.getPropertyValue('paddingTop'), 'string');
      assert.typeOf(element.style.getPropertyValue('marginTop'), 'string');

      const parentRect = document.documentElement.getBoundingClientRect();
      const targetRect = element._target.getBoundingClientRect();
      const thisRect = element.getBoundingClientRect();

      const targetLeft = targetRect.left - parentRect.left;
      const targetTop = targetRect.top - parentRect.top;

      const pixelCompare = pixel =>
        Math.round(parseInt(pixel.substring(0, pixel.length - 1)), 10);

      assert.equal(
          pixelCompare(element.style.left),
          pixelCompare(
              (targetLeft + (targetRect.width - thisRect.width) / 2) + 'px'));
      assert.equal(
          pixelCompare(element.style.top),
          pixelCompare(
              (targetTop + targetRect.height + element.offset) + 'px'));
    });

    test('hide', done => {
      element.hide({});
      setTimeout(() => {
        const style = getComputedStyle(element);
        assert.isFalse(element._isShowing);
        assert.isFalse(element.classList.contains('hovered'));
        assert.equal(style.opacity, '0');
        assert.equal(style.visibility, 'hidden');
        assert.notEqual(element.container, Polymer.dom(element).parentNode);
        done();
      }, TRANSITION_TIME);
    });

    test('show', done => {
      element.show({});
      setTimeout(() => {
        const style = getComputedStyle(element);
        assert.isTrue(element._isShowing);
        assert.isTrue(element.classList.contains('hovered'));
        assert.equal(style.opacity, '1');
        assert.equal(style.visibility, 'visible');
        done();
      }, TRANSITION_TIME);
    });

    test('card shows on enter and hides on leave', done => {
      const button = Polymer.dom(document).querySelector('button');
      assert.isFalse(element._isShowing);
      button.addEventListener('mouseenter', event => {
        assert.isTrue(element._isShowing);
        button.dispatchEvent(new CustomEvent('mouseleave'));
      });
      button.addEventListener('mouseleave', event => {
        assert.isFalse(element._isShowing);
        done();
      });
      button.dispatchEvent(new CustomEvent('mouseenter'));
    });
  });
</script>