noflo/spec/Port.js

Flow-Based Programming environment for JavaScript

var chai, noflo;

if (typeof process !== 'undefined' && process.execPath && process.execPath.match(/node|iojs/)) {
  if (!chai) {
    chai = require('chai');
  }
  noflo = require('../src/lib/NoFlo.coffee');
} else {
  noflo = require('noflo');
}

describe('Legacy Port', function() {
  describe('Untyped port instance', function() {
    return it('should be of type "all"', function() {
      var p;
      p = new noflo.Port;
      chai.expect(p.type).to.equal('all');
      return chai.expect(p.getDataType()).to.equal('all');
    });
  });
  describe('Port instance', function() {
    var p;
    p = null;
    describe('initially', function() {
      it('should retain the given type', function() {
        p = new noflo.Port('string');
        return chai.expect(p.type).to.equal('string');
      });
      it('should not have a name', function() {
        return chai.expect(p.name).to.be.a('null');
      });
      it('should not have a node name', function() {
        return chai.expect(p.node).to.be.a('null');
      });
      return it('should return "Port" as identifier', function() {
        return chai.expect(p.getId()).to.equal('Port');
      });
    });
    describe('with given name and node', function() {
      return it('should return correct ID', function() {
        p.name = 'out';
        p.node = 'Foo';
        return chai.expect(p.getId()).to.equal('Foo OUT');
      });
    });
    describe('without attached socket', function() {
      it('should not be attached initially', function() {
        return chai.expect(p.isAttached()).to.equal(false);
      });
      it('should allow a connection', function() {
        return chai.expect(p.canAttach()).to.equal(true);
      });
      it('should not be connected initially', function() {
        return chai.expect(p.isConnected()).to.equal(false);
      });
      it('should not contain a socket initially', function() {
        return chai.expect(p.socket).to.not.exist;
      });
      it('should not allow connecting', function() {
        return chai.expect(function() {
          return p.connect();
        }).to["throw"](Error);
      });
      it('should not allow beginning groups', function() {
        return chai.expect(function() {
          return p.beginGroup('Foo');
        }).to["throw"](Error);
      });
      it('should not allow sending data', function() {
        return chai.expect(function() {
          return p.send('Foo');
        }).to["throw"](Error);
      });
      it('should not allow ending groups', function() {
        return chai.expect(function() {
          return p.endGroup();
        }).to["throw"](Error);
      });
      return it('should not allow disconnecting', function() {
        return chai.expect(function() {
          return p.disconnect();
        }).to["throw"](Error);
      });
    });
    return describe('with attached socket', function() {
      var s, s2;
      s = new noflo.internalSocket.InternalSocket;
      s2 = new noflo.internalSocket.InternalSocket;
      it('should emit an event', function(done) {
        p.once('attach', function(sock) {
          chai.expect(sock).to.equal(s);
          return done();
        });
        return p.attach(s);
      });
      it('should be marked as attached', function() {
        return chai.expect(p.isAttached()).to.equal(true);
      });
      it('should not be connected initially', function() {
        return chai.expect(p.isConnected()).to.equal(false);
      });
      it('should have a reference to the socket', function() {
        chai.expect(p.sockets.length).to.equal(1);
        return chai.expect(p.sockets[0]).to.equal(s);
      });
      it('should allow other sockets to be attached', function(done) {
        chai.expect(p.canAttach()).to.equal(true);
        p.once('attach', function(sock) {
          chai.expect(p.sockets.length).to.equal(2);
          chai.expect(sock).to.equal(s2);
          return done();
        });
        return p.attach(s2);
      });
      it('should emit an event on detaching', function(done) {
        p.once('detach', function(sock) {
          chai.expect(sock).to.equal(s);
          chai.expect(p.sockets.length).to.equal(1);
          return done();
        });
        return p.detach();
      });
      it('should still be attached', function(done) {
        chai.expect(p.isAttached()).to.equal(true);
        p.once('detach', function(sock) {
          chai.expect(sock).to.equal(s2);
          return done();
        });
        return p.detach(s2);
      });
      it('should not be attached any longer', function() {
        return chai.expect(p.isAttached()).to.equal(false);
      });
      return it('should not contain a socket any longer', function() {
        return chai.expect(p.socket).to.not.exist;
      });
    });
  });
  describe('Input port', function() {
    var p, s;
    p = new noflo.Port;
    s = new noflo.internalSocket.InternalSocket;
    p.attach(s);
    it('should emit connection events', function(done) {
      p.once('connect', function(sock, id) {
        chai.expect(sock).to.equal(s);
        chai.expect(id).to.equal(null);
        return done();
      });
      return s.connect();
    });
    it('should be connected after that', function() {
      return chai.expect(p.isConnected()).to.equal(true);
    });
    it('should emit begin group events', function(done) {
      p.once('begingroup', function(group, id) {
        chai.expect(group).to.equal('Foo');
        chai.expect(id).to.equal(null);
        return done();
      });
      return s.beginGroup('Foo');
    });
    it('should emit data events', function(done) {
      p.once('data', function(data, id) {
        chai.expect(data).to.equal('Bar');
        chai.expect(id).to.equal(null);
        return done();
      });
      return s.send('Bar');
    });
    it('should emit end group events', function(done) {
      p.once('endgroup', function(group, id) {
        chai.expect(group).to.equal('Foo');
        chai.expect(id).to.equal(null);
        return done();
      });
      return s.endGroup();
    });
    it('should emit disconnection events', function(done) {
      p.once('disconnect', function(sock, id) {
        chai.expect(sock).to.equal(s);
        chai.expect(id).to.equal(null);
        return done();
      });
      return s.disconnect();
    });
    it('should not be connected after that', function() {
      return chai.expect(p.isConnected()).to.equal(false);
    });
    return it('should connect automatically when sending', function(done) {
      p.once('connect', function(sock, id) {
        chai.expect(sock).to.equal(s);
        chai.expect(id).to.equal(null);
        chai.expect(p.isConnected()).to.equal(true);
        return p.once('data', function(data, id) {
          chai.expect(data).to.equal('Baz');
          chai.expect(id).to.equal(null);
          return done();
        });
      });
      return s.send('Baz');
    });
  });
  return describe('Output port', function() {
    var p, s;
    p = new noflo.Port;
    s = new noflo.internalSocket.InternalSocket;
    p.attach(s);
    it('should connect the socket', function(done) {
      s.once('connect', function() {
        chai.expect(p.isConnected()).to.equal(true);
        return done();
      });
      return p.connect();
    });
    it('should begin groups on the socket', function(done) {
      s.once('begingroup', function(group) {
        chai.expect(group).to.equal('Baz');
        return done();
      });
      return p.beginGroup('Baz');
    });
    it('should send data to the socket', function(done) {
      s.once('data', function(data) {
        chai.expect(data).to.equal('Foo');
        return done();
      });
      return p.send('Foo');
    });
    it('should end groups on the socket', function(done) {
      s.once('endgroup', function(group) {
        chai.expect(group).to.equal('Baz');
        return done();
      });
      return p.endGroup();
    });
    it('should disconnect the socket', function(done) {
      s.once('disconnect', function() {
        chai.expect(p.isConnected()).to.equal(false);
        return done();
      });
      return p.disconnect();
    });
    return it('should connect automatically when sending', function(done) {
      s.once('connect', function() {
        chai.expect(p.isConnected()).to.equal(true);
        return s.once('data', function(data) {
          chai.expect(data).to.equal('Bar');
          return done();
        });
      });
      return p.send('Bar');
    });
  });
});