loopback-datasource-juggler/test/scope.test.js

// This test written in mocha+should.js
var should = require('./init.js');

var db, Railway, Station;

describe('scope', function () {

  before(function () {
    db = getSchema();
    Railway = db.define('Railway', {
      URID: {type: String, index: true}
    });
    Station = db.define('Station', {
      USID: {type: String, index: true},
      capacity: {type: Number, index: true},
      thoughput: {type: Number, index: true},
      isActive: {type: Boolean, index: true},
      isUndeground: {type: Boolean, index: true}
    });
  });

  beforeEach(function (done) {
    Railway.destroyAll(function () {
      Station.destroyAll(done);
    });
  });

  it('should define scope with query', function (done) {
    Station.scope('active', {where: {isActive: true}});
    Station.active.create(function (err, station) {
      should.not.exist(err);
      should.exist(station);
      should.exist(station.isActive);
      station.isActive.should.be.true;
      done();
    });
  });

  it('should allow scope chaining', function (done) {
    Station.scope('active', {where: {isActive: true}});
    Station.scope('subway', {where: {isUndeground: true}});
    Station.active.subway.create(function (err, station) {
      should.not.exist(err);
      should.exist(station);
      station.isActive.should.be.true;
      station.isUndeground.should.be.true;
      done();
    })
  });

  it('should query all', function (done) {
    Station.scope('active', {where: {isActive: true}});
    Station.scope('inactive', {where: {isActive: false}});
    Station.scope('ground', {where: {isUndeground: true}});
    Station.active.ground.create(function () {
      Station.inactive.ground.create(function () {
        Station.ground.inactive(function (err, ss) {
          ss.should.have.lengthOf(1);
          done();
        });
      });
    });
  });
});