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import { opine } from "../../mod.ts";import { describe, it } from "../utils.ts";import { expect } from "../deps.ts";import { dirname, fromFileUrl, join } from "../../deps.ts";import { tmpl } from "../support/tmpl.ts";
const __dirname = dirname(import.meta.url);
function createApp() {  const app = opine();
  app.engine(".tmpl", tmpl);
  return app;}
describe("app", function () {  describe(".render(name, fn)", function () {    it("should support absolute paths", function (done) {      const app = createApp();
      app.locals.user = { name: "Deno" };
      app.render(        join(__dirname, "../fixtures", "user.tmpl"),        function (err: any, str: string) {          if (err) return done(err);          expect(str).toEqual("<p>Deno</p>");          done();        },      );    });
    it('should support absolute paths with "view engine"', function (done) {      const app = createApp();
      app.set("view engine", "tmpl");      app.locals.user = { name: "Deno" };
      app.render(        join(__dirname, "../fixtures", "user"),        function (err: any, str: string) {          if (err) return done(err);          expect(str).toEqual("<p>Deno</p>");          done();        },      );    });
    it("should expose app.locals", function (done) {      const app = createApp();
      app.set("views", join(__dirname, "../fixtures"));      app.locals.user = { name: "Deno" };
      app.render("user.tmpl", function (err: any, str: string) {        if (err) return done(err);        expect(str).toEqual("<p>Deno</p>");        done();      });    });
    it("should support index.<engine>", function (done) {      const app = createApp();
      app.set("views", join(__dirname, "../fixtures"));      app.set("view engine", "tmpl");
      app.render("blog/post", function (err: any, str: string) {        if (err) return done(err);        expect(str).toEqual("<h1>Blog Post</h1>");        done();      });    });
    it("should handle render error throws", function (done) {      const app = opine();
      function View(this: any, name: string, options: any) {        this.name = name;        this.pathPromise = Promise.resolve("fake");      }
      View.prototype.render = function (options: any, fn: any) {        throw new Error("err!");      };
      app.set("view", View);
      app.render("something", function (err: any, str: string) {        expect(err).toBeTruthy();        expect(err.message).toEqual("err!");        done();      });    });
    describe("when the file does not exist", function () {      it("should provide a helpful error", function (done) {        const app = createApp();
        app.set("views", join(__dirname, "../fixtures"));        app.render("rawr.tmpl", function (err: any) {          expect(err).toBeTruthy();          expect(err.message).toEqual(            'Failed to lookup view "rawr.tmpl" in views directory "' +              fromFileUrl(join(__dirname, "../fixtures")) + '"',          );          done();        });      });    });
    describe("when an error occurs", function () {      it("should invoke the callback", function (done) {        const app = createApp();
        app.set("views", join(__dirname, "../fixtures"));
        app.render("user.tmpl", function (err: any) {          expect(err).toBeTruthy();          expect(err.name).toEqual("RenderError");          done();        });      });    });
    describe("when an extension is given", function () {      it("should render the template", function (done) {        const app = createApp();
        app.set("views", join(__dirname, "../fixtures"));
        app.render("email.tmpl", function (err: any, str: string) {          if (err) return done(err);          expect(str).toEqual("<p>This is an email</p>");          done();        });      });    });
    describe('when "view engine" is given', function () {      it("should render the template", function (done) {        const app = createApp();
        app.set("view engine", "tmpl");        app.set("views", join(__dirname, "../fixtures"));
        app.render("email", function (err: any, str: string) {          if (err) return done(err);          expect(str).toEqual("<p>This is an email</p>");          done();        });      });    });
    describe('when "views" is given', function () {      it("should lookup the file in the path", function (done) {        const app = createApp();
        app.set("views", join(__dirname, "../fixtures", "default_layout"));        app.locals.user = { name: "Deno" };
        app.render("user.tmpl", function (err: any, str: string) {          if (err) return done(err);          expect(str).toEqual("<p>Deno</p>");          done();        });      });
      describe("when array of paths", function () {        it("should lookup the file in the path", function (done) {          const app = createApp();          const views = [            join(__dirname, "../fixtures", "local_layout"),            join(__dirname, "../fixtures", "default_layout"),          ];
          app.set("views", views);          app.locals.user = { name: "Deno" };
          app.render("user.tmpl", function (err: any, str: string) {            if (err) return done(err);            expect(str).toEqual("<span>Deno</span>");            done();          });        });
        it("should lookup in later paths until found", function (done) {          const app = createApp();          const views = [            join(__dirname, "../fixtures", "local_layout"),            join(__dirname, "../fixtures", "default_layout"),          ];
          app.set("views", views);          app.locals.name = "Deno";
          app.render("name.tmpl", function (err: any, str: string) {            if (err) return done(err);            expect(str).toEqual("<p>Deno</p>");            done();          });        });
        it("should error if file does not exist", function (done) {          const app = createApp();          const views = [            join(__dirname, "../fixtures", "local_layout"),            join(__dirname, "../fixtures", "default_layout"),          ];
          app.set("views", views);          app.locals.name = "Deno";
          app.render("pet.tmpl", function (err: any, str: string) {            expect(err).toBeTruthy();            expect(err.message).toEqual(              'Failed to lookup view "pet.tmpl" in views directories "' +                fromFileUrl(views[0]) + '" or "' + fromFileUrl(views[1]) + '"',            );            done();          });        });      });    });
    describe('when a "view" constructor is given', function () {      it("should create an instance of it", function (done) {        const app = opine();
        function View(this: any, name: string, options: any) {          this.name = name;          this.pathPromise =            "path is required by application.js as a signal of success even though it is not used there.";        }
        View.prototype.render = function (options: any, fn: any) {          fn(null, "abstract engine");        };
        app.set("view", View);
        app.render("something", function (err: any, str: string) {          if (err) return done(err);          expect(str).toEqual("abstract engine");          done();        });      });    });
    describe("caching", function () {      it("should always lookup view without cache", function (done) {        const app = opine();        let count = 0;
        function View(this: any, name: string, options: any) {          this.name = name;          this.pathPromise = "fake";          count++;        }
        View.prototype.render = function (options: any, fn: any) {          fn(null, "abstract engine");        };
        app.set("view cache", false);        app.set("view", View);
        app.render("something", function (err: any, str: string) {          if (err) return done(err);          expect(count).toEqual(1);          expect(str).toEqual("abstract engine");          app.render("something", function (err: any, str: string) {            if (err) return done(err);            expect(count).toEqual(2);            expect(str).toEqual("abstract engine");            done();          });        });      });
      it('should cache with "view cache" setting', function (done) {        const app = opine();        let count = 0;
        function View(this: any, name: string, options: any) {          this.name = name;          this.pathPromise = "fake";          count++;        }
        View.prototype.render = function (options: any, fn: any) {          fn(null, "abstract engine");        };
        app.set("view cache", true);        app.set("view", View);
        app.render("something", function (err: any, str: string) {          if (err) return done(err);          expect(count).toEqual(1);          expect(str).toEqual("abstract engine");          app.render("something", function (err: any, str: string) {            if (err) return done(err);            expect(count).toEqual(1);            expect(str).toEqual("abstract engine");            done();          });        });      });    });  });
  describe(".render(name, options, fn)", function () {    it("should render the template", function (done) {      const app = createApp();
      app.set("views", join(__dirname, "../fixtures"));
      const user = { name: "Deno" };
      app.render("user.tmpl", { user: user }, function (err: any, str: string) {        if (err) return done(err);        expect(str).toEqual("<p>Deno</p>");        done();      });    });
    it("should expose app.locals", function (done) {      const app = createApp();
      app.set("views", join(__dirname, "../fixtures"));      app.locals.user = { name: "Deno" };
      app.render("user.tmpl", {}, function (err: any, str: string) {        if (err) return done(err);        expect(str).toEqual("<p>Deno</p>");        done();      });    });
    it("should give precedence to app.render() locals", function (done) {      const app = createApp();
      app.set("views", join(__dirname, "../fixtures"));      app.locals.user = { name: "Deno" };      const steve = { name: "steve" };
      app.render(        "user.tmpl",        { user: steve },        function (err: any, str: string) {          if (err) return done(err);          expect(str).toEqual("<p>steve</p>");          done();        },      );    });
    describe("caching", function () {      it("should cache with cache option", function (done) {        const app = opine();        let count = 0;
        function View(this: any, name: string, options: any) {          this.name = name;          this.pathPromise = "fake";          count++;        }
        View.prototype.render = function (options: any, fn: any) {          fn(null, "abstract engine");        };
        app.set("view cache", false);        app.set("view", View);
        app.render(          "something",          { cache: true },          function (err: any, str: string) {            if (err) return done(err);            expect(count).toEqual(1);            expect(str).toEqual("abstract engine");            app.render(              "something",              { cache: true },              function (err: any, str: string) {                if (err) return done(err);                expect(count).toEqual(1);                expect(str).toEqual("abstract engine");                done();              },            );          },        );      });    });  });});