pdfjs-dist/lib/test/unit/unicode_spec.js

/* Copyright 2017 Mozilla Foundation
 *
 * 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.
 */
'use strict';
var coreGlyphList = require('../../core/glyphlist.js');
var coreUnicode = require('../../core/unicode.js');
var getGlyphsUnicode = coreGlyphList.getGlyphsUnicode;
var getDingbatsGlyphsUnicode = coreGlyphList.getDingbatsGlyphsUnicode;
var mapSpecialUnicodeValues = coreUnicode.mapSpecialUnicodeValues;
var getUnicodeForGlyph = coreUnicode.getUnicodeForGlyph;
var getUnicodeRangeFor = coreUnicode.getUnicodeRangeFor;
var getNormalizedUnicodes = coreUnicode.getNormalizedUnicodes;
var reverseIfRtl = coreUnicode.reverseIfRtl;
describe('unicode', function () {
 describe('mapSpecialUnicodeValues', function () {
  it('should not re-map normal Unicode values', function () {
   expect(mapSpecialUnicodeValues(0x0041)).toEqual(0x0041);
   expect(mapSpecialUnicodeValues(0xFB01)).toEqual(0xFB01);
  });
  it('should re-map special Unicode values', function () {
   expect(mapSpecialUnicodeValues(0xF8E9)).toEqual(0x00A9);
   expect(mapSpecialUnicodeValues(0xFFFF)).toEqual(0);
  });
 });
 describe('getUnicodeForGlyph', function () {
  var standardMap, dingbatsMap;
  beforeAll(function (done) {
   standardMap = getGlyphsUnicode();
   dingbatsMap = getDingbatsGlyphsUnicode();
   done();
  });
  afterAll(function () {
   standardMap = dingbatsMap = null;
  });
  it('should get Unicode values for valid glyph names', function () {
   expect(getUnicodeForGlyph('A', standardMap)).toEqual(0x0041);
   expect(getUnicodeForGlyph('a1', dingbatsMap)).toEqual(0x2701);
  });
  it('should recover Unicode values from uniXXXX/uXXXX{XX} glyph names', function () {
   expect(getUnicodeForGlyph('uni0041', standardMap)).toEqual(0x0041);
   expect(getUnicodeForGlyph('u0041', standardMap)).toEqual(0x0041);
   expect(getUnicodeForGlyph('uni2701', dingbatsMap)).toEqual(0x2701);
   expect(getUnicodeForGlyph('u2701', dingbatsMap)).toEqual(0x2701);
  });
  it('should not get Unicode values for invalid glyph names', function () {
   expect(getUnicodeForGlyph('Qwerty', standardMap)).toEqual(-1);
   expect(getUnicodeForGlyph('Qwerty', dingbatsMap)).toEqual(-1);
  });
 });
 describe('getUnicodeRangeFor', function () {
  it('should get correct Unicode range', function () {
   expect(getUnicodeRangeFor(0x0041)).toEqual(0);
   expect(getUnicodeRangeFor(0xFB01)).toEqual(62);
  });
  it('should not get a Unicode range', function () {
   expect(getUnicodeRangeFor(0x05FF)).toEqual(-1);
  });
 });
 describe('getNormalizedUnicodes', function () {
  var NormalizedUnicodes;
  beforeAll(function (done) {
   NormalizedUnicodes = getNormalizedUnicodes();
   done();
  });
  afterAll(function () {
   NormalizedUnicodes = null;
  });
  it('should get normalized Unicode values for ligatures', function () {
   expect(NormalizedUnicodes['\uFB01']).toEqual('fi');
   expect(NormalizedUnicodes['\u0675']).toEqual('\u0627\u0674');
  });
  it('should not normalize standard characters', function () {
   expect(NormalizedUnicodes['A']).toEqual(undefined);
  });
 });
 describe('reverseIfRtl', function () {
  var NormalizedUnicodes;
  function getGlyphUnicode(char) {
   if (NormalizedUnicodes[char] !== undefined) {
    return NormalizedUnicodes[char];
   }
   return char;
  }
  beforeAll(function (done) {
   NormalizedUnicodes = getNormalizedUnicodes();
   done();
  });
  afterAll(function () {
   NormalizedUnicodes = null;
  });
  it('should not reverse LTR characters', function () {
   var A = getGlyphUnicode('A');
   expect(reverseIfRtl(A)).toEqual('A');
   var fi = getGlyphUnicode('\uFB01');
   expect(reverseIfRtl(fi)).toEqual('fi');
  });
  it('should reverse RTL characters', function () {
   var heAlef = getGlyphUnicode('\u05D0');
   expect(reverseIfRtl(heAlef)).toEqual('\u05D0');
   var arAlef = getGlyphUnicode('\u0675');
   expect(reverseIfRtl(arAlef)).toEqual('\u0674\u0627');
  });
 });
});