// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Include test fixture.
GEN_INCLUDE(['../testing/chromevox_unittest_base.js']);

/**
 * Test fixture.
 * @constructor
 * @extends {ChromeVoxUnitTestBase}
 */
function CvoxMathShifterUnitTest() {}

CvoxMathShifterUnitTest.prototype = {
  __proto__: ChromeVoxUnitTestBase.prototype,

  closureModuleDeps: [
    'cvox.ChromeVoxTester',
    'cvox.CursorSelection',
    'cvox.DescriptionUtil',
    'cvox.MathmlStoreRules'
  ],

  /** @override */
  setUp: function() {
    cvox.ChromeVoxTester.setUp(document);
  },

  /** @override */
  tearDown: function() {
    cvox.ChromeVoxTester.tearDown(document);
  },

  /**
   * Simulates speaking the node (only text, no annotations!).
   * @param {Node} node The node to be described.
   * @return {!string} The resulting string.
   */
  getNodeDescription: function(node) {
    if (node) {
      var descs = cvox.DescriptionUtil.getMathDescription(node);
      var descs_str = descs.map(function(desc) {return desc.text;});
      return descs_str.filter(function(str) {return str;}).join(' ');
    }
    return '';
  }
};

TEST_F('CvoxMathShifterUnitTest', 'MathmlMtext', function() {
  this.loadHtml(
      '<div><math xmlns="http://www.w3.org/1998/Math/MathML" id="m0">' +
      '<mtext>Quod erat demonstrandum</mtext>' +
      '</math></div>'
      );
  var node = $('m0');
  assertEquals('Quod erat demonstrandum', this.getNodeDescription(node));
});


/** Test MathML individual.
 * @export
 */
TEST_F('CvoxMathShifterUnitTest', 'MathmlMi', function() {
  this.loadHtml(
      '<div><math xmlns="http://www.w3.org/1998/Math/MathML" id="m1">' +
      '<mi>x</mi>' +
      '</math></div>');
  var node = $('m1');
  assertEquals('x', this.getNodeDescription(node));
});


/** Test MathML numeral.
 * @export
 */
TEST_F('CvoxMathShifterUnitTest', 'MathmlMn', function() {
  this.loadHtml(
      '<div><math xmlns="http://www.w3.org/1998/Math/MathML" id="m2">' +
      '<mn>123</mn>' +
      '</math></div>');
  var node = $('m2');
  assertEquals('123', this.getNodeDescription(node));
});


/** Test MathML operator
 * @export
 */
TEST_F('CvoxMathShifterUnitTest', 'MathmlMo', function() {
  this.loadHtml(
      '<div><math xmlns="http://www.w3.org/1998/Math/MathML" id="m3">' +
      '<mo>+</mo>' +
      '</math></div>');
  var node = $('m3');
  assertEquals('+', this.getNodeDescription(node));
});


/** Test MathML superscript.
 * @export
 */
TEST_F('CvoxMathShifterUnitTest', 'MathmlMsup', function() {
  this.loadHtml(
      '<div><math xmlns="http://www.w3.org/1998/Math/MathML" id="m4">' +
      '<msup><mi>x</mi><mn>4</mn></msup>' +
      '</math></div>');
  var node = $('m4');
  assertEquals('x super 4', this.getNodeDescription(node));
});


/** Test MathML subscript.
 * @export
 */
TEST_F('CvoxMathShifterUnitTest', 'MathmlMsub', function() {
  this.loadHtml(
      '<div><math xmlns="http://www.w3.org/1998/Math/MathML" id="m5">' +
      '<msub><mi>x</mi><mn>3</mn></msub>' +
      '</math></div>');
  var node = $('m5');
  assertEquals('x sub 3', this.getNodeDescription(node));
});


/** Test MathML subsupscript.
 * @export
 */
TEST_F('CvoxMathShifterUnitTest', 'MathmlMsubsup', function() {
  this.loadHtml(
      '<div><math xmlns="http://www.w3.org/1998/Math/MathML" id="m6">' +
      '<msubsup><mi>x</mi><mn>3</mn><mn>4</mn></msubsup>' +
      '</math></div>');
  var node = $('m6');
  assertEquals('x sub 3 super 4', this.getNodeDescription(node));
});