text: /* 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.
   */
  /* eslint no-var: error */
  
  import {
    DOMCanvasFactory,
    DOMSVGFactory,
    getFilenameFromUrl,
    isValidFetchUrl,
    PDFDateString,
  } from "../../src/display/display_utils.js";
  import { isNodeJS } from "../../src/shared/is_node.js";
  
  describe("display_utils", function() {
    describe("DOMCanvasFactory", function() {
      let canvasFactory;
  
      beforeAll(function(done) {
        canvasFactory = new DOMCanvasFactory();
        done();
      });
  
      afterAll(function() {
        canvasFactory = null;
      });
  
      it("`create` should throw an error if the dimensions are invalid", function() {
        // Invalid width.
        expect(function() {
          return canvasFactory.create(-1, 1);
        }).toThrow(new Error("Invalid canvas size"));
  
        // Invalid height.
        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 (isNodeJS) {
          pending("Document is not supported in Node.js.");
        }
  
        const { canvas, context } = canvasFactory.create(20, 40);
        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() {
        const 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() {
        const canvasAndContext = { canvas: "foo", context: "bar" };
  
        // Invalid width.
        expect(function() {
          return canvasFactory.reset(canvasAndContext, -1, 1);
        }).toThrow(new Error("Invalid canvas size"));
  
        // Invalid height.
        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 (isNodeJS) {
          pending("Document is not supported in Node.js.");
        }
  
        const canvasAndContext = canvasFactory.create(20, 40);
        canvasFactory.reset(canvasAndContext, 60, 80);
  
        const { canvas, context } = canvasAndContext;
        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 (isNodeJS) {
          pending("Document is not supported in Node.js.");
        }
  
        const canvasAndContext = canvasFactory.create(20, 40);
        canvasFactory.destroy(canvasAndContext);
  
        const { canvas, context } = canvasAndContext;
        expect(canvas).toBe(null);
        expect(context).toBe(null);
      });
    });
  
    describe("DOMSVGFactory", function() {
      let svgFactory;
  
      beforeAll(function(done) {
        svgFactory = new DOMSVGFactory();
        done();
      });
  
      afterAll(function() {
        svgFactory = null;
      });
  
      it("`create` should throw an error if the dimensions are invalid", function() {
        // Invalid width.
        expect(function() {
          return svgFactory.create(-1, 0);
        }).toThrow(new Error("Invalid SVG dimensions"));
  
        // Invalid height.
        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 (isNodeJS) {
          pending("Document is not supported in Node.js.");
        }
  
        const 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 (isNodeJS) {
          pending("Document is not supported in Node.js.");
        }
  
        const svg = svgFactory.createElement("svg:rect");
        expect(svg instanceof SVGRectElement).toBe(true);
      });
    });
  
    describe("getFilenameFromUrl", function() {
      it("should get the filename from an absolute URL", function() {
        const url = "https://server.org/filename.pdf";
        expect(getFilenameFromUrl(url)).toEqual("filename.pdf");
      });
  
      it("should get the filename from a relative URL", function() {
        const url = "../../filename.pdf";
        expect(getFilenameFromUrl(url)).toEqual("filename.pdf");
      });
  
      it("should get the filename from a URL with an anchor", function() {
        const url = "https://server.org/filename.pdf#foo";
        expect(getFilenameFromUrl(url)).toEqual("filename.pdf");
      });
  
      it("should get the filename from a URL with query parameters", function() {
        const url = "https://server.org/filename.pdf?foo=bar";
        expect(getFilenameFromUrl(url)).toEqual("filename.pdf");
      });
    });
  
    describe("isValidFetchUrl", function() {
      it("handles invalid Fetch URLs", function() {
        expect(isValidFetchUrl(null)).toEqual(false);
        expect(isValidFetchUrl(100)).toEqual(false);
        expect(isValidFetchUrl("foo")).toEqual(false);
        expect(isValidFetchUrl("/foo", 100)).toEqual(false);
      });
  
      it("handles relative Fetch URLs", function() {
        expect(isValidFetchUrl("/foo", "file://www.example.com")).toEqual(false);
        expect(isValidFetchUrl("/foo", "http://www.example.com")).toEqual(true);
      });
  
      it("handles unsupported Fetch protocols", function() {
        expect(isValidFetchUrl("file://www.example.com")).toEqual(false);
        expect(isValidFetchUrl("ftp://www.example.com")).toEqual(false);
      });
  
      it("handles supported Fetch protocols", function() {
        expect(isValidFetchUrl("http://www.example.com")).toEqual(true);
        expect(isValidFetchUrl("https://www.example.com")).toEqual(true);
      });
    });
  
    describe("PDFDateString", function() {
      describe("toDateObject", function() {
        it("converts PDF date strings to JavaScript `Date` objects", function() {
          const 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)),
            // Invalid dates like the 31th of April are handled by JavaScript:
            "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)),
            // Offset hour and minute that result in a day change:
            "D:20190203040506+05'07": new Date(Date.UTC(2019, 1, 2, 22, 58, 6)),
          };
  
          for (const [input, expectation] of Object.entries(expectations)) {
            const result = PDFDateString.toDateObject(input);
            if (result) {
              expect(result.getTime()).toEqual(expectation.getTime());
            } else {
              expect(result).toEqual(expectation);
            }
          }
        });
      });
    });
  });
  