// Copyright 2014 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * @fileoverview Unit tests for goog.html.SafeStyle and its builders.
 */

goog.provide('goog.html.safeStyleTest');

goog.require('goog.html.SafeStyle');
goog.require('goog.string.Const');
goog.require('goog.testing.jsunit');

goog.setTestOnly('goog.html.safeStyleTest');


function testSafeStyle() {
  var style = 'width: 1em;height: 1em;';
  var safeStyle =
      goog.html.SafeStyle.fromConstant(goog.string.Const.from(style));
  var extracted = goog.html.SafeStyle.unwrap(safeStyle);
  assertEquals(style, extracted);
  assertEquals(style, safeStyle.getTypedStringValue());
  assertEquals('SafeStyle{' + style + '}', String(safeStyle));

  // Interface marker is present.
  assertTrue(safeStyle.implementsGoogStringTypedString);
}


/** @suppress {checkTypes} */
function testUnwrap() {
  var evil = {};
  evil.safeStyleValueWithSecurityContract__googHtmlSecurityPrivate_ =
      'width: expression(evil);';
  evil.SAFE_STYLE_TYPE_MARKER__GOOG_HTML_SECURITY_PRIVATE_ = {};

  var exception = assertThrows(function() {
    goog.html.SafeStyle.unwrap(evil);
  });
  assertTrue(
      exception.message.indexOf('expected object of type SafeStyle') > 0);
}


function testFromConstant_allowsEmptyString() {
  assertEquals(
      goog.html.SafeStyle.EMPTY,
      goog.html.SafeStyle.fromConstant(goog.string.Const.from('')));
}

function testFromConstant_throwsOnForbiddenCharacters() {
  assertThrows(function() {
    goog.html.SafeStyle.fromConstant(goog.string.Const.from('width: x<;'));
  });
  assertThrows(function() {
    goog.html.SafeStyle.fromConstant(goog.string.Const.from('width: x>;'));
  });
}


function testFromConstant_throwsIfNoFinalSemicolon() {
  assertThrows(function() {
    goog.html.SafeStyle.fromConstant(goog.string.Const.from('width: 1em'));
  });
}


function testFromConstant_throwsIfNoColon() {
  assertThrows(function() {
    goog.html.SafeStyle.fromConstant(goog.string.Const.from('width= 1em;'));
  });
}


function testEmpty() {
  assertEquals('', goog.html.SafeStyle.unwrap(goog.html.SafeStyle.EMPTY));
}


function testCreate() {
  var style = goog.html.SafeStyle.create({
    'background': goog.string.Const.from('url(i.png)'),
    'margin': '0'
  });
  assertEquals('background:url(i.png);margin:0;',
      goog.html.SafeStyle.unwrap(style));
}


function testCreate_allowsEmpty() {
  assertEquals(goog.html.SafeStyle.EMPTY, goog.html.SafeStyle.create({}));
}


function testCreate_skipsNull() {
  var style = goog.html.SafeStyle.create({'background': null});
  assertEquals(goog.html.SafeStyle.EMPTY, style);
}


function testCreate_allowsLengths() {
  var style = goog.html.SafeStyle.create({'padding': '0 1px .2% 3.4em'});
  assertEquals('padding:0 1px .2% 3.4em;', goog.html.SafeStyle.unwrap(style));
}


function testCreate_throwsOnForbiddenCharacters() {
  assertThrows(function() {
    goog.html.SafeStyle.create({'<': '0'});
  });
  assertThrows(function() {
    goog.html.SafeStyle.create({'color': goog.string.Const.from('<')});
  });
}


function testCreate_values() {
  var valids = [
    '0',
    '0 0',
    '1px',
    '100%',
    '2.3px',
    '.1em',
    'red',
    '#f00',
    'red !important',
    '"Times New Roman"',
    "'Times New Roman'",
    '"Bold \'nuff"',
    '"O\'Connor\'s Revenge"'
  ];
  for (var i = 0; i < valids.length; i++) {
    var value = valids[i];
    assertEquals('background:' + value + ';', goog.html.SafeStyle.unwrap(
        goog.html.SafeStyle.create({'background': value})));
  }

  var invalids = [
    '',
    'expression(alert(1))',
    'url(i.png)',
    '"',
    '"\'"\'',
    goog.string.Const.from('red;')
  ];
  for (var i = 0; i < invalids.length; i++) {
    var value = invalids[i];
    assertThrows(function() {
      goog.html.SafeStyle.create({'background': value});
    });
  }
}


function testConcat() {
  var width = goog.html.SafeStyle.fromConstant(
      goog.string.Const.from('width: 1em;'));
  var margin = goog.html.SafeStyle.create({'margin': '0'});
  var padding = goog.html.SafeStyle.create({'padding': '0'});

  var style = goog.html.SafeStyle.concat(width, margin);
  assertEquals('width: 1em;margin:0;', goog.html.SafeStyle.unwrap(style));

  style = goog.html.SafeStyle.concat([width, margin]);
  assertEquals('width: 1em;margin:0;', goog.html.SafeStyle.unwrap(style));

  style = goog.html.SafeStyle.concat([width], [padding, margin]);
  assertEquals('width: 1em;padding:0;margin:0;',
      goog.html.SafeStyle.unwrap(style));
}


function testConcat_allowsEmpty() {
  var empty = goog.html.SafeStyle.EMPTY;
  assertEquals(empty, goog.html.SafeStyle.concat());
  assertEquals(empty, goog.html.SafeStyle.concat([]));
  assertEquals(empty, goog.html.SafeStyle.concat(empty));
}
