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import { opine } from "../../mod.ts";import { expect, superdeno } from "../deps.ts";import { describe, it } from "../utils.ts";
describe("res", function () {  describe(".append(field, val)", function () {    it("should append multiple headers", function (done) {      const app = opine();
      app.use(function (req, res, next) {        res.append("Link", "<http://localhost/>");        next();      });
      app.use(function (req, res) {        res.append("Link", "<http://localhost:80/>");        res.end();      });
      superdeno(app)        .get("/")        .expect("Link", "<http://localhost/>, <http://localhost:80/>", done);    });
    it("should accept array of values", function (done) {      const app = opine();
      app.use(function (req, res, next) {        res.append(          "Link",          [            'https://www.google.com; rel="dns-prefetch"',            'https://www.youtube.com; rel="preconnect"',          ],        );
        res.append("cache-control", ["public", "max-age=604800", "immutable"]);        res.end();      });
      superdeno(app)        .get("/")        .expect(          "Link",          'https://www.google.com; rel="dns-prefetch", https://www.youtube.com; rel="preconnect"',        )        .expect("Cache-Control", "public, max-age=604800, immutable")        .expect(200, done);    });
    it("should ignore empty arrays", function (done) {      const app = opine();
      app.use(function (req, res, next) {        res.set("cache-control", "no-store").append("cache-control", []).end();      });
      superdeno(app)        .get("/")        .expect("Cache-Control", "no-store")        .expect(200, done);    });
    it("should get reset by res.set(field, val)", function (done) {      const app = opine();
      app.use(function (req, res, next) {        res.append("Link", "<http://localhost/>");        res.append("Link", "<http://localhost:80/>");        next();      });
      app.use(function (req, res) {        res.set("Link", "<http://127.0.0.1/>");        res.end();      });
      superdeno(app)        .get("/")        .expect("Link", "<http://127.0.0.1/>", done);    });
    it("should work with res.set(field, val) first", function (done) {      const app = opine();
      app.use(function (req, res, next) {        res.set("Link", "<http://localhost/>");        next();      });
      app.use(function (req, res) {        res.append("Link", "<http://localhost:80/>");        res.end();      });
      superdeno(app)        .get("/")        .expect("Link", "<http://localhost/>, <http://localhost:80/>", done);    });
    it("should work with cookies", function (done) {      const app = opine();
      app.use(function (req, res, next) {        res.cookie({ name: "foo", value: "bar" });        next();      });
      app.use(function (req, res) {        res.append("set-cookie", "bar=baz");        res.append("set-cookie", ["bar=bang", "curl=wget; Path=/"]);        res.append("set-cookie", ["bar=bang", "express=js; Path=/"]);
        // Holds the values of all the `set-cookie` headers sent.        const cookieVals = [];
        for (const [key, val] of res.headers!) {          if (key.toLowerCase() === "set-cookie") {            cookieVals.push(val);          }        }
        res.json({ cookies: cookieVals.sort() });      });
      superdeno(app)        .get("/")        .expect(200, {          cookies: [            "bar=bang",            "bar=bang",            "bar=baz",            "curl=wget; Path=/",            "express=js; Path=/",            "foo=bar; Path=/",          ],        }, done);    });  });});