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

/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * Copyright 2019 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.
 *
 * @licend The above is the entire license notice for the
 * Javascript code in this page
 */
"use strict";

var _display_utils = require("../../display/display_utils");

var _is_node = _interopRequireDefault(require("../../shared/is_node"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

describe('display_utils', function () {
  describe('DOMCanvasFactory', function () {
    var canvasFactory;
    beforeAll(function (done) {
      canvasFactory = new _display_utils.DOMCanvasFactory();
      done();
    });
    afterAll(function () {
      canvasFactory = null;
    });
    it('`create` should throw an error if the dimensions are invalid', function () {
      expect(function () {
        return canvasFactory.create(-1, 1);
      }).toThrow(new Error('Invalid canvas size'));
      expect(function () {
        return canvasFactory.create(1, -1);
      }).toThrow(new Error('Invalid canvas size'));
    });
    it('`create` should return a canvas if the dimensions are valid', function () {
      if ((0, _is_node["default"])()) {
        pending('Document is not supported in Node.js.');
      }

      var _canvasFactory$create = canvasFactory.create(20, 40),
          canvas = _canvasFactory$create.canvas,
          context = _canvasFactory$create.context;

      expect(canvas instanceof HTMLCanvasElement).toBe(true);
      expect(context instanceof CanvasRenderingContext2D).toBe(true);
      expect(canvas.width).toBe(20);
      expect(canvas.height).toBe(40);
    });
    it('`reset` should throw an error if no canvas is provided', function () {
      var canvasAndContext = {
        canvas: null,
        context: null
      };
      expect(function () {
        return canvasFactory.reset(canvasAndContext, 20, 40);
      }).toThrow(new Error('Canvas is not specified'));
    });
    it('`reset` should throw an error if the dimensions are invalid', function () {
      var canvasAndContext = {
        canvas: 'foo',
        context: 'bar'
      };
      expect(function () {
        return canvasFactory.reset(canvasAndContext, -1, 1);
      }).toThrow(new Error('Invalid canvas size'));
      expect(function () {
        return canvasFactory.reset(canvasAndContext, 1, -1);
      }).toThrow(new Error('Invalid canvas size'));
    });
    it('`reset` should alter the canvas/context if the dimensions are valid', function () {
      if ((0, _is_node["default"])()) {
        pending('Document is not supported in Node.js.');
      }

      var canvasAndContext = canvasFactory.create(20, 40);
      canvasFactory.reset(canvasAndContext, 60, 80);
      var canvas = canvasAndContext.canvas,
          context = canvasAndContext.context;
      expect(canvas instanceof HTMLCanvasElement).toBe(true);
      expect(context instanceof CanvasRenderingContext2D).toBe(true);
      expect(canvas.width).toBe(60);
      expect(canvas.height).toBe(80);
    });
    it('`destroy` should throw an error if no canvas is provided', function () {
      expect(function () {
        return canvasFactory.destroy({});
      }).toThrow(new Error('Canvas is not specified'));
    });
    it('`destroy` should clear the canvas/context', function () {
      if ((0, _is_node["default"])()) {
        pending('Document is not supported in Node.js.');
      }

      var canvasAndContext = canvasFactory.create(20, 40);
      canvasFactory.destroy(canvasAndContext);
      var canvas = canvasAndContext.canvas,
          context = canvasAndContext.context;
      expect(canvas).toBe(null);
      expect(context).toBe(null);
    });
  });
  describe('DOMSVGFactory', function () {
    var svgFactory;
    beforeAll(function (done) {
      svgFactory = new _display_utils.DOMSVGFactory();
      done();
    });
    afterAll(function () {
      svgFactory = null;
    });
    it('`create` should throw an error if the dimensions are invalid', function () {
      expect(function () {
        return svgFactory.create(-1, 0);
      }).toThrow(new Error('Invalid SVG dimensions'));
      expect(function () {
        return svgFactory.create(0, -1);
      }).toThrow(new Error('Invalid SVG dimensions'));
    });
    it('`create` should return an SVG element if the dimensions are valid', function () {
      if ((0, _is_node["default"])()) {
        pending('Document is not supported in Node.js.');
      }

      var svg = svgFactory.create(20, 40);
      expect(svg instanceof SVGSVGElement).toBe(true);
      expect(svg.getAttribute('version')).toBe('1.1');
      expect(svg.getAttribute('width')).toBe('20px');
      expect(svg.getAttribute('height')).toBe('40px');
      expect(svg.getAttribute('preserveAspectRatio')).toBe('none');
      expect(svg.getAttribute('viewBox')).toBe('0 0 20 40');
    });
    it('`createElement` should throw an error if the type is not a string', function () {
      expect(function () {
        return svgFactory.createElement(true);
      }).toThrow(new Error('Invalid SVG element type'));
    });
    it('`createElement` should return an SVG element if the type is valid', function () {
      if ((0, _is_node["default"])()) {
        pending('Document is not supported in Node.js.');
      }

      var svg = svgFactory.createElement('svg:rect');
      expect(svg instanceof SVGRectElement).toBe(true);
    });
  });
  describe('getFilenameFromUrl', function () {
    it('should get the filename from an absolute URL', function () {
      var url = 'https://server.org/filename.pdf';
      expect((0, _display_utils.getFilenameFromUrl)(url)).toEqual('filename.pdf');
    });
    it('should get the filename from a relative URL', function () {
      var url = '../../filename.pdf';
      expect((0, _display_utils.getFilenameFromUrl)(url)).toEqual('filename.pdf');
    });
    it('should get the filename from a URL with an anchor', function () {
      var url = 'https://server.org/filename.pdf#foo';
      expect((0, _display_utils.getFilenameFromUrl)(url)).toEqual('filename.pdf');
    });
    it('should get the filename from a URL with query parameters', function () {
      var url = 'https://server.org/filename.pdf?foo=bar';
      expect((0, _display_utils.getFilenameFromUrl)(url)).toEqual('filename.pdf');
    });
  });
  describe('isValidFetchUrl', function () {
    it('handles invalid Fetch URLs', function () {
      expect((0, _display_utils.isValidFetchUrl)(null)).toEqual(false);
      expect((0, _display_utils.isValidFetchUrl)(100)).toEqual(false);
      expect((0, _display_utils.isValidFetchUrl)('foo')).toEqual(false);
      expect((0, _display_utils.isValidFetchUrl)('/foo', 100)).toEqual(false);
    });
    it('handles relative Fetch URLs', function () {
      expect((0, _display_utils.isValidFetchUrl)('/foo', 'file://www.example.com')).toEqual(false);
      expect((0, _display_utils.isValidFetchUrl)('/foo', 'http://www.example.com')).toEqual(true);
    });
    it('handles unsupported Fetch protocols', function () {
      expect((0, _display_utils.isValidFetchUrl)('file://www.example.com')).toEqual(false);
      expect((0, _display_utils.isValidFetchUrl)('ftp://www.example.com')).toEqual(false);
    });
    it('handles supported Fetch protocols', function () {
      expect((0, _display_utils.isValidFetchUrl)('http://www.example.com')).toEqual(true);
      expect((0, _display_utils.isValidFetchUrl)('https://www.example.com')).toEqual(true);
    });
  });
  describe('PDFDateString', function () {
    describe('toDateObject', function () {
      it('converts PDF date strings to JavaScript `Date` objects', function () {
        var expectations = {
          undefined: null,
          "null": null,
          42: null,
          '2019': null,
          'D2019': null,
          'D:': null,
          'D:201': null,
          'D:2019': new Date(Date.UTC(2019, 0, 1, 0, 0, 0)),
          'D:20190': new Date(Date.UTC(2019, 0, 1, 0, 0, 0)),
          'D:201900': new Date(Date.UTC(2019, 0, 1, 0, 0, 0)),
          'D:201913': new Date(Date.UTC(2019, 0, 1, 0, 0, 0)),
          'D:201902': new Date(Date.UTC(2019, 1, 1, 0, 0, 0)),
          'D:2019020': new Date(Date.UTC(2019, 1, 1, 0, 0, 0)),
          'D:20190200': new Date(Date.UTC(2019, 1, 1, 0, 0, 0)),
          'D:20190232': new Date(Date.UTC(2019, 1, 1, 0, 0, 0)),
          'D:20190203': new Date(Date.UTC(2019, 1, 3, 0, 0, 0)),
          'D:20190431': new Date(Date.UTC(2019, 4, 1, 0, 0, 0)),
          'D:201902030': new Date(Date.UTC(2019, 1, 3, 0, 0, 0)),
          'D:2019020300': new Date(Date.UTC(2019, 1, 3, 0, 0, 0)),
          'D:2019020324': new Date(Date.UTC(2019, 1, 3, 0, 0, 0)),
          'D:2019020304': new Date(Date.UTC(2019, 1, 3, 4, 0, 0)),
          'D:20190203040': new Date(Date.UTC(2019, 1, 3, 4, 0, 0)),
          'D:201902030400': new Date(Date.UTC(2019, 1, 3, 4, 0, 0)),
          'D:201902030460': new Date(Date.UTC(2019, 1, 3, 4, 0, 0)),
          'D:201902030405': new Date(Date.UTC(2019, 1, 3, 4, 5, 0)),
          'D:2019020304050': new Date(Date.UTC(2019, 1, 3, 4, 5, 0)),
          'D:20190203040500': new Date(Date.UTC(2019, 1, 3, 4, 5, 0)),
          'D:20190203040560': new Date(Date.UTC(2019, 1, 3, 4, 5, 0)),
          'D:20190203040506': new Date(Date.UTC(2019, 1, 3, 4, 5, 6)),
          'D:20190203040506F': new Date(Date.UTC(2019, 1, 3, 4, 5, 6)),
          'D:20190203040506Z': new Date(Date.UTC(2019, 1, 3, 4, 5, 6)),
          'D:20190203040506-': new Date(Date.UTC(2019, 1, 3, 4, 5, 6)),
          'D:20190203040506+': new Date(Date.UTC(2019, 1, 3, 4, 5, 6)),
          'D:20190203040506+\'': new Date(Date.UTC(2019, 1, 3, 4, 5, 6)),
          'D:20190203040506+0': new Date(Date.UTC(2019, 1, 3, 4, 5, 6)),
          'D:20190203040506+01': new Date(Date.UTC(2019, 1, 3, 3, 5, 6)),
          'D:20190203040506+00\'': new Date(Date.UTC(2019, 1, 3, 4, 5, 6)),
          'D:20190203040506+24\'': new Date(Date.UTC(2019, 1, 3, 4, 5, 6)),
          'D:20190203040506+01\'': new Date(Date.UTC(2019, 1, 3, 3, 5, 6)),
          'D:20190203040506+01\'0': new Date(Date.UTC(2019, 1, 3, 3, 5, 6)),
          'D:20190203040506+01\'00': new Date(Date.UTC(2019, 1, 3, 3, 5, 6)),
          'D:20190203040506+01\'60': new Date(Date.UTC(2019, 1, 3, 3, 5, 6)),
          'D:20190203040506+0102': new Date(Date.UTC(2019, 1, 3, 3, 3, 6)),
          'D:20190203040506+01\'02': new Date(Date.UTC(2019, 1, 3, 3, 3, 6)),
          'D:20190203040506+01\'02\'': new Date(Date.UTC(2019, 1, 3, 3, 3, 6)),
          'D:20190203040506+05\'07': new Date(Date.UTC(2019, 1, 2, 22, 58, 6))
        };

        for (var _i = 0, _Object$entries = Object.entries(expectations); _i < _Object$entries.length; _i++) {
          var _Object$entries$_i = _slicedToArray(_Object$entries[_i], 2),
              input = _Object$entries$_i[0],
              expectation = _Object$entries$_i[1];

          var result = _display_utils.PDFDateString.toDateObject(input);

          if (result) {
            expect(result.getTime()).toEqual(expectation.getTime());
          } else {
            expect(result).toEqual(expectation);
          }
        }
      });
    });
  });
});