node-postgres/packages/pg-native/test/notify.js

var Client = require("../");
var ok = require("okay");

var notify = function (channel, payload) {
  var client = new Client();
  client.connectSync();
  client.querySync("NOTIFY " + channel + ", '" + payload + "'");
  client.end();
};

describe("simple LISTEN/NOTIFY", function () {
  before(function (done) {
    var client = (this.client = new Client());
    client.connect(done);
  });

  it("works", function (done) {
    var client = this.client;
    client.querySync("LISTEN boom");
    client.on("notification", function (msg) {
      done();
    });
    notify("boom", "sup");
  });

  after(function (done) {
    this.client.end(done);
  });
});

if (!process.env.TRAVIS_CI) {
  describe("async LISTEN/NOTIFY", function () {
    before(function (done) {
      var client = (this.client = new Client());
      client.connect(done);
    });

    it("works", function (done) {
      var client = this.client;
      var count = 0;
      var check = function () {
        count++;
        if (count >= 2) return done();
      };
      client.on("notification", check);
      client.query(
        "LISTEN test",
        ok(done, function () {
          notify("test", "bot");
          client.query(
            "SELECT pg_sleep(.05)",
            ok(done, function () {
              notify("test", "bot");
            }),
          );
        }),
      );
    });

    after(function (done) {
      this.client.end(done);
    });
  });
}