overleaf/services/clsi/test/acceptance/js/UrlCachingTests.js

/* eslint-disable
    no-path-concat,
    no-unused-vars,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
 * decaffeinate suggestions:
 * DS102: Remove unnecessary code created because of implicit returns
 * DS207: Consider shorter variations of null checks
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
const Client = require("./helpers/Client");
const request = require("request");
require("chai").should();
const sinon = require("sinon");
const ClsiApp = require("./helpers/ClsiApp");

const host = "localhost";

const Server = {
	run() {
		const express = require("express");
		const app = express();

		const staticServer = express.static(__dirname + "/../fixtures/");
		app.get("/:random_id/*", (req, res, next) => {
			this.getFile(req.url);
			req.url = `/${req.params[0]}`;
			return staticServer(req, res, next);
		});

		return app.listen(31415, host);
	},

	getFile() {},

	randomId() {
		return Math.random().toString(16).slice(2);
	}
};

Server.run();

describe("Url Caching", function() {
	describe("Downloading an image for the first time", function() {
		before(function(done) {
			this.project_id = Client.randomId();
			this.file = `${Server.randomId()}/lion.png`;
			this.request = {
				resources: [{
					path: "main.tex",
					content: `\
\\documentclass{article}
\\usepackage{graphicx}
\\begin{document}
\\includegraphics{lion.png}
\\end{document}\
`
				}, {
					path: "lion.png",
					url: `http://${host}:31415/${this.file}`
				}]
			};

			sinon.spy(Server, "getFile");
			return ClsiApp.ensureRunning(() => {
				return Client.compile(this.project_id, this.request, (error, res, body) => { this.error = error; this.res = res; this.body = body; return done(); });
			});
		});

		afterEach(function() { return Server.getFile.restore(); });

		return it("should download the image", function() {
			return Server.getFile
				.calledWith(`/${this.file}`)
				.should.equal(true);
		});
	});
				
	describe("When an image is in the cache and the last modified date is unchanged", function() {
		before(function(done) {
			this.project_id = Client.randomId();
			this.file = `${Server.randomId()}/lion.png`;
			this.request = {
				resources: [{
					path: "main.tex",
					content: `\
\\documentclass{article}
\\usepackage{graphicx}
\\begin{document}
\\includegraphics{lion.png}
\\end{document}\
`
				}, (this.image_resource = {
					path: "lion.png",
					url: `http://${host}:31415/${this.file}`,
					modified: Date.now()
				})]
			};

			return Client.compile(this.project_id, this.request, (error, res, body) => {
				this.error = error;
				this.res = res;
				this.body = body;
				sinon.spy(Server, "getFile");
				return Client.compile(this.project_id, this.request, (error1, res1, body1) => {
					this.error = error1;
					this.res = res1;
					this.body = body1;
					return done();
				});
			});
		});

		after(function() { return Server.getFile.restore(); });

		return it("should not download the image again", function() { return Server.getFile.called.should.equal(false); });
	});

	describe("When an image is in the cache and the last modified date is advanced", function() {
		before(function(done) {
			this.project_id = Client.randomId();
			this.file = `${Server.randomId()}/lion.png`;
			this.request = {
				resources: [{
					path: "main.tex",
					content: `\
\\documentclass{article}
\\usepackage{graphicx}
\\begin{document}
\\includegraphics{lion.png}
\\end{document}\
`
				}, (this.image_resource = {
					path: "lion.png",
					url: `http://${host}:31415/${this.file}`,
					modified: (this.last_modified = Date.now())
				})]
			};

			return Client.compile(this.project_id, this.request, (error, res, body) => {
				this.error = error;
				this.res = res;
				this.body = body;
				sinon.spy(Server, "getFile");
				this.image_resource.modified = new Date(this.last_modified + 3000);
				return Client.compile(this.project_id, this.request, (error1, res1, body1) => {
					this.error = error1;
					this.res = res1;
					this.body = body1;
					return done();
				});
			});
		});

		afterEach(function() { return Server.getFile.restore(); });

		return it("should download the image again", function() { return Server.getFile.called.should.equal(true); });
	});

	describe("When an image is in the cache and the last modified date is further in the past", function() {
		before(function(done) {
			this.project_id = Client.randomId();
			this.file = `${Server.randomId()}/lion.png`;
			this.request = {
				resources: [{
					path: "main.tex",
					content: `\
\\documentclass{article}
\\usepackage{graphicx}
\\begin{document}
\\includegraphics{lion.png}
\\end{document}\
`
				}, (this.image_resource = {
					path: "lion.png",
					url: `http://${host}:31415/${this.file}`,
					modified: (this.last_modified = Date.now())
				})]
			};

			return Client.compile(this.project_id, this.request, (error, res, body) => {
				this.error = error;
				this.res = res;
				this.body = body;
				sinon.spy(Server, "getFile");
				this.image_resource.modified = new Date(this.last_modified - 3000);
				return Client.compile(this.project_id, this.request, (error1, res1, body1) => {
					this.error = error1;
					this.res = res1;
					this.body = body1;
					return done();
				});
			});
		});

		afterEach(function() { return Server.getFile.restore(); });

		return it("should not download the image again", function() { return Server.getFile.called.should.equal(false); });
	});

	describe("When an image is in the cache and the last modified date is not specified", function() {
		before(function(done) {
			this.project_id = Client.randomId();
			this.file = `${Server.randomId()}/lion.png`;
			this.request = {
				resources: [{
					path: "main.tex",
					content: `\
\\documentclass{article}
\\usepackage{graphicx}
\\begin{document}
\\includegraphics{lion.png}
\\end{document}\
`
				}, (this.image_resource = {
					path: "lion.png",
					url: `http://${host}:31415/${this.file}`,
					modified: (this.last_modified = Date.now())
				})]
			};

			return Client.compile(this.project_id, this.request, (error, res, body) => {
				this.error = error;
				this.res = res;
				this.body = body;
				sinon.spy(Server, "getFile");
				delete this.image_resource.modified;
				return Client.compile(this.project_id, this.request, (error1, res1, body1) => {
					this.error = error1;
					this.res = res1;
					this.body = body1;
					return done();
				});
			});
		});

		afterEach(function() { return Server.getFile.restore(); });

		return it("should download the image again", function() { return Server.getFile.called.should.equal(true); });
	});
		
	return describe("After clearing the cache", function() {
		before(function(done) {
			this.project_id = Client.randomId();
			this.file = `${Server.randomId()}/lion.png`;
			this.request = {
				resources: [{
					path: "main.tex",
					content: `\
\\documentclass{article}
\\usepackage{graphicx}
\\begin{document}
\\includegraphics{lion.png}
\\end{document}\
`
				}, (this.image_resource = {
					path: "lion.png",
					url: `http://${host}:31415/${this.file}`,
					modified: (this.last_modified = Date.now())
				})]
			};

			return Client.compile(this.project_id, this.request, error => {
				if (error != null) { throw error; }
				return Client.clearCache(this.project_id, (error, res, body) => {
					if (error != null) { throw error; }
					sinon.spy(Server, "getFile");
					return Client.compile(this.project_id, this.request, (error1, res1, body1) => {
						this.error = error1;
						this.res = res1;
						this.body = body1;
						return done();
					});
				});
			});
		});

		afterEach(function() { return Server.getFile.restore(); });

		return it("should download the image again", function() { return Server.getFile.called.should.equal(true); });
	});
});