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import opine from "../../mod.ts";import { describe, it } from "../utils.ts";import { expect } from "../deps.ts";import { dirname, join } from "../../deps.ts";
const __dirname = dirname(import.meta.url);
async function render(path: string, options: any) {  const str = await Deno.readTextFile(path);
  return str.replace("{{user.name}}", options.user.name);}
describe("app", function () {  describe(".engine(ext, fn)", function () {    it("should map a template engine", function (done) {      const app = opine();
      app.set("views", join(__dirname, "../fixtures"));      app.engine(".html", render);      app.locals.user = { name: "Deno" };
      app.render("user.html", function (err: any, str: string) {        if (err) {          return done(err);        }
        expect(str).toEqual("<p>Deno</p>");        done();      });    });
    it('should work without leading "."', function (done) {      const app = opine();
      app.set("views", join(__dirname, "../fixtures"));      app.engine("html", render);      app.locals.user = { name: "Deno" };
      app.render("user.html", function (err: any, str: string) {        if (err) {          return done(err);        }
        expect(str).toEqual("<p>Deno</p>");        done();      });    });
    it('should work "view engine" setting', function (done) {      const app = opine();
      app.set("views", join(__dirname, "../fixtures"));      app.engine("html", render);      app.set("view engine", "html");      app.locals.user = { name: "Deno" };
      app.render("user.html", function (err: any, str: string) {        if (err) {          return done(err);        }
        expect(str).toEqual("<p>Deno</p>");        done();      });    });
    it('should work "view engine" with leading "."', function (done) {      const app = opine();
      app.set("views", join(__dirname, "../fixtures"));      app.engine(".html", render);      app.set("view engine", ".html");      app.locals.user = { name: "Deno" };
      app.render("user.html", function (err: any, str: string) {        if (err) {          return done(err);        }
        expect(str).toEqual("<p>Deno</p>");        done();      });    });  });});