@reedchan/koa-http-proxy/test/port.js

http proxy middleware for koa

var assert = require("assert");
var Koa = require("koa");
var agent = require("supertest").agent;
var proxy = require("../");

function proxyTarget(port) {
  "use strict";

  var other = new Koa();
  other.use(function (ctx) {
    ctx.status = 200;
    ctx.body = "Success";
  });
  return other.listen(port);
}

describe("proxies to requested port", function () {
  "use strict";

  var other, http;
  beforeEach(function () {
    http = new Koa();
    other = proxyTarget(8080);
  });

  afterEach(function () {
    other.close();
  });

  function assertSuccess(server, done) {
    agent(http.callback())
      .get("/")
      .expect(200)
      .end(function (err, res) {
        if (err) {
          return done(err);
        }
        assert(res.text === "Success");
        done();
      });
  }

  describe("when host is a String", function () {
    it("when passed as an option", function (done) {
      http.use(
        proxy("http://localhost", {
          port: 8080,
        }),
      );
      assertSuccess(http, done);
    });

    it("when passed on the host string", function (done) {
      http.use(proxy("http://localhost:8080"));
      assertSuccess(http, done);
    });
  });

  describe("when host is a function", function () {
    it("and port is on the String returned", function (done) {
      http.use(
        proxy(function () {
          return "http://localhost:8080";
        }),
      );
      assertSuccess(http, done);
    });

    it("and port passed as an option", function (done) {
      http.use(
        proxy(
          function () {
            return "http://localhost";
          },
          { port: 8080 },
        ),
      );
      assertSuccess(http, done);
    });
  });
});