loopback-datasource-juggler/test/basic-querying.test.js

349 lines
11 KiB
JavaScript

// This test written in mocha+should.js
var should = require('./init.js');
var db, User;
describe('basic-querying', function() {
before(function(done) {
db = getSchema();
User = db.define('User', {
name: {type: String, sort: true},
email: {type: String, index: true},
role: {type: String, index: true},
order: {type: Number, index: true, sort: true}
});
db.automigrate(done);
});
describe('findById', function() {
before(function(done) {
User.destroyAll(done);
});
it('should query by id: not found', function(done) {
User.findById(1, function(err, u) {
should.not.exist(u);
should.not.exist(err);
done();
});
});
it('should query by id: found', function(done) {
User.create(function(err, u) {
should.not.exist(err);
should.exist(u.id);
User.findById(u.id, function(err, u) {
should.exist(u);
should.not.exist(err);
u.should.be.an.instanceOf(User);
done();
});
});
});
});
describe('find', function() {
before(seed);
it('should query collection', function(done) {
User.find(function(err, users) {
should.exists(users);
should.not.exists(err);
users.should.have.lengthOf(6);
done();
});
});
it('should query limited collection', function(done) {
User.find({limit: 3}, function(err, users) {
should.exists(users);
should.not.exists(err);
users.should.have.lengthOf(3);
done();
});
});
it('should query offset collection with limit', function(done) {
User.find({skip: 1, limit: 4}, function(err, users) {
should.exists(users);
should.not.exists(err);
users.should.have.lengthOf(4);
done();
});
});
it('should query filtered collection', function(done) {
User.find({where: {role: 'lead'}}, function(err, users) {
should.exists(users);
should.not.exists(err);
users.should.have.lengthOf(2);
done();
});
});
it('should query collection sorted by numeric field', function(done) {
User.find({order: 'order'}, function(err, users) {
should.exists(users);
should.not.exists(err);
users.forEach(function(u, i) {
u.order.should.eql(i + 1);
});
done();
});
});
it('should query collection desc sorted by numeric field', function(done) {
User.find({order: 'order DESC'}, function(err, users) {
should.exists(users);
should.not.exists(err);
users.forEach(function(u, i) {
u.order.should.eql(users.length - i);
});
done();
});
});
it('should query collection sorted by string field', function(done) {
User.find({order: 'name'}, function(err, users) {
should.exists(users);
should.not.exists(err);
users.shift().name.should.equal('George Harrison');
users.shift().name.should.equal('John Lennon');
users.pop().name.should.equal('Stuart Sutcliffe');
done();
});
});
it('should query collection desc sorted by string field', function(done) {
User.find({order: 'name DESC'}, function(err, users) {
should.exists(users);
should.not.exists(err);
users.pop().name.should.equal('George Harrison');
users.pop().name.should.equal('John Lennon');
users.shift().name.should.equal('Stuart Sutcliffe');
done();
});
});
it('should only include fields as specified', function(done) {
var remaining = 0;
function sample(fields) {
return {
expect: function (arr) {
remaining++;
User.find({fields: fields}, function(err, users) {
remaining--;
if(err) return done(err);
should.exists(users);
if(remaining === 0) {
done();
}
users.forEach(function (user) {
var obj = user.toObject();
Object.keys(obj)
.forEach(function (key) {
// if the obj has an unexpected value
if(obj[key] !== undefined && arr.indexOf(key) === -1) {
console.log('Given fields:', fields);
console.log('Got:', key, obj[key]);
console.log('Expected:', arr);
throw new Error('should not include data for key: '+ key);
}
});
});
});
}
}
}
sample({name: true}).expect(['name']);
sample({name: false}).expect(['id', 'email', 'role', 'order']);
sample({name: false, id: true}).expect(['id']);
sample({id: true}).expect(['id']);
sample('id').expect(['id']);
sample(['id']).expect(['id']);
sample(['email']).expect(['email']);
});
});
describe('count', function() {
before(seed);
it('should query total count', function(done) {
User.count(function(err, n) {
should.not.exist(err);
should.exist(n);
n.should.equal(6);
done();
});
});
it('should query filtered count', function(done) {
User.count({role: 'lead'}, function(err, n) {
should.not.exist(err);
should.exist(n);
n.should.equal(2);
done();
});
});
});
describe('findOne', function() {
before(seed);
it('should find first record (default sort by id)', function(done) {
User.all({order: 'id'}, function(err, users) {
User.findOne(function(e, u) {
should.not.exist(e);
should.exist(u);
u.id.toString().should.equal(users[0].id.toString());
done();
});
});
});
it('should find first record', function(done) {
User.findOne({order: 'order'}, function(e, u) {
should.not.exist(e);
should.exist(u);
u.order.should.equal(1);
u.name.should.equal('Paul McCartney');
done();
});
});
it('should find last record', function(done) {
User.findOne({order: 'order DESC'}, function(e, u) {
should.not.exist(e);
should.exist(u);
u.order.should.equal(6);
u.name.should.equal('Ringo Starr');
done();
});
});
it('should find last record in filtered set', function(done) {
User.findOne({
where: {role: 'lead'},
order: 'order DESC'
}, function(e, u) {
should.not.exist(e);
should.exist(u);
u.order.should.equal(2);
u.name.should.equal('John Lennon');
done();
});
});
it('should work even when find by id', function(done) {
User.findOne(function(e, u) {
User.findOne({where: {id: u.id}}, function(err, user) {
should.not.exist(err);
should.exist(user);
done();
});
});
});
});
describe('exists', function() {
before(seed);
it('should check whether record exist', function(done) {
User.findOne(function(e, u) {
User.exists(u.id, function(err, exists) {
should.not.exist(err);
should.exist(exists);
exists.should.be.ok;
done();
});
});
});
it('should check whether record not exist', function(done) {
User.destroyAll(function() {
User.exists(42, function(err, exists) {
should.not.exist(err);
exists.should.not.be.ok;
done();
});
});
});
});
describe('destroyAll', function() {
before(seed);
it('should check whether record not exist', function(done) {
User.destroyAll({name: 'John Lennon'}, function() {
User.find({where: {name: 'John Lennon'}}, function(err, data) {
should.not.exist(err);
data.length.should.equal(0);
User.find({where: {name: 'Paul McCartney'}}, function(err, data) {
should.not.exist(err);
data.length.should.equal(1);
done();
});
});
});
});
});
});
function seed(done) {
var count = 0;
var beatles = [
{
name: 'John Lennon',
mail: 'john@b3atl3s.co.uk',
role: 'lead',
order: 2
}, {
name: 'Paul McCartney',
mail: 'paul@b3atl3s.co.uk',
role: 'lead',
order: 1
},
{name: 'George Harrison', order: 5},
{name: 'Ringo Starr', order: 6},
{name: 'Pete Best', order: 4},
{name: 'Stuart Sutcliffe', order: 3}
];
User.destroyAll(function() {
beatles.forEach(function(beatle) {
User.create(beatle, ok);
});
});
function ok() {
if (++count === beatles.length) {
done();
}
}
}