pdfjs-dist/lib/test/unit/network_utils_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 _network_utils = require('../../display/network_utils');

var _util = require('../../shared/util');

describe('network_utils', function () {
  describe('validateRangeRequestCapabilities', function () {
    var defaultValues = {
      allowRangeRequests: false,
      suggestedLength: undefined
    };
    it('rejects range chunk sizes that are not larger than zero', function () {
      expect(function () {
        (0, _network_utils.validateRangeRequestCapabilities)({ rangeChunkSize: 0 });
      }).toThrow(new Error('Range chunk size must be larger than zero'));
    });
    it('rejects disabled or non-HTTP range requests', function () {
      expect((0, _network_utils.validateRangeRequestCapabilities)({
        disableRange: true,
        isHttp: true,
        rangeChunkSize: 64
      })).toEqual(defaultValues);
      expect((0, _network_utils.validateRangeRequestCapabilities)({
        disableRange: false,
        isHttp: false,
        rangeChunkSize: 64
      })).toEqual(defaultValues);
    });
    it('rejects invalid Accept-Ranges header values', function () {
      expect((0, _network_utils.validateRangeRequestCapabilities)({
        disableRange: false,
        isHttp: true,
        getResponseHeader: function getResponseHeader(headerName) {
          if (headerName === 'Accept-Ranges') {
            return 'none';
          }
        },
        rangeChunkSize: 64
      })).toEqual(defaultValues);
    });
    it('rejects invalid Content-Encoding header values', function () {
      expect((0, _network_utils.validateRangeRequestCapabilities)({
        disableRange: false,
        isHttp: true,
        getResponseHeader: function getResponseHeader(headerName) {
          if (headerName === 'Accept-Ranges') {
            return 'bytes';
          } else if (headerName === 'Content-Encoding') {
            return 'gzip';
          }
        },
        rangeChunkSize: 64
      })).toEqual(defaultValues);
    });
    it('rejects invalid Content-Length header values', function () {
      expect((0, _network_utils.validateRangeRequestCapabilities)({
        disableRange: false,
        isHttp: true,
        getResponseHeader: function getResponseHeader(headerName) {
          if (headerName === 'Accept-Ranges') {
            return 'bytes';
          } else if (headerName === 'Content-Encoding') {
            return null;
          } else if (headerName === 'Content-Length') {
            return 'eight';
          }
        },
        rangeChunkSize: 64
      })).toEqual(defaultValues);
    });
    it('rejects file sizes that are too small for range requests', function () {
      expect((0, _network_utils.validateRangeRequestCapabilities)({
        disableRange: false,
        isHttp: true,
        getResponseHeader: function getResponseHeader(headerName) {
          if (headerName === 'Accept-Ranges') {
            return 'bytes';
          } else if (headerName === 'Content-Encoding') {
            return null;
          } else if (headerName === 'Content-Length') {
            return 8;
          }
        },
        rangeChunkSize: 64
      })).toEqual({
        allowRangeRequests: false,
        suggestedLength: 8
      });
    });
    it('accepts file sizes large enough for range requests', function () {
      expect((0, _network_utils.validateRangeRequestCapabilities)({
        disableRange: false,
        isHttp: true,
        getResponseHeader: function getResponseHeader(headerName) {
          if (headerName === 'Accept-Ranges') {
            return 'bytes';
          } else if (headerName === 'Content-Encoding') {
            return null;
          } else if (headerName === 'Content-Length') {
            return 8192;
          }
        },
        rangeChunkSize: 64
      })).toEqual({
        allowRangeRequests: true,
        suggestedLength: 8192
      });
    });
  });
  describe('createResponseStatusError', function () {
    it('handles missing PDF file responses', function () {
      expect((0, _network_utils.createResponseStatusError)(404, 'https://foo.com/bar.pdf')).toEqual(new _util.MissingPDFException('Missing PDF "https://foo.com/bar.pdf".'));
      expect((0, _network_utils.createResponseStatusError)(0, 'file://foo.pdf')).toEqual(new _util.MissingPDFException('Missing PDF "file://foo.pdf".'));
    });
    it('handles unexpected responses', function () {
      expect((0, _network_utils.createResponseStatusError)(302, 'https://foo.com/bar.pdf')).toEqual(new _util.UnexpectedResponseException('Unexpected server response (302) while retrieving PDF ' + '"https://foo.com/bar.pdf".'));
      expect((0, _network_utils.createResponseStatusError)(0, 'https://foo.com/bar.pdf')).toEqual(new _util.UnexpectedResponseException('Unexpected server response (0) while retrieving PDF ' + '"https://foo.com/bar.pdf".'));
    });
  });
  describe('validateResponseStatus', function () {
    it('accepts valid response statuses', function () {
      expect((0, _network_utils.validateResponseStatus)(200)).toEqual(true);
      expect((0, _network_utils.validateResponseStatus)(206)).toEqual(true);
    });
    it('rejects invalid response statuses', function () {
      expect((0, _network_utils.validateResponseStatus)(302)).toEqual(false);
      expect((0, _network_utils.validateResponseStatus)(404)).toEqual(false);
      expect((0, _network_utils.validateResponseStatus)(null)).toEqual(false);
      expect((0, _network_utils.validateResponseStatus)(undefined)).toEqual(false);
    });
  });
});