transaction.test.js
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var chai = require('chai')
, expect = chai.expect
, Support = require(__dirname + '/support')
, dialect = Support.getTestDialect()
, Transaction = require(__dirname + '/../lib/transaction')
, sinon = require('sinon')
describe(Support.getTestDialectTeaser("Transaction"), function () {
this.timeout(4000);
describe('constructor', function() {
it('stores options', function() {
var transaction = new Transaction(this.sequelize)
expect(transaction.options).to.be.an.instanceOf(Object)
})
it('generates an identifier', function() {
var transaction = new Transaction(this.sequelize)
expect(transaction.id).to.exist
})
})
describe('commit', function() {
it('is a commit method available', function() {
expect(Transaction).to.respondTo('commit')
})
})
describe('rollback', function() {
it('is a rollback method available', function() {
expect(Transaction).to.respondTo('rollback')
})
})
if (dialect !== 'sqlite') {
describe('row locking', function () {
this.timeout(10000);
it('supports for update', function (done) {
var User = this.sequelize.define('user', {
username: Support.Sequelize.STRING,
awesome: Support.Sequelize.BOOLEAN
})
, self = this
, t1Spy = sinon.spy()
, t2Spy = sinon.spy()
this.sequelize.sync({ force: true }).then(function () {
return User.create({ username: 'jan'})
}).then(function () {
self.sequelize.transaction(function (t1) {
return User.find({
where: {
username: 'jan'
}
}, {
lock: t1.LOCK.UPDATE,
transaction: t1
}).then(function (t1Jan) {
self.sequelize.transaction({
isolationLevel: Transaction.ISOLATION_LEVELS.READ_COMMITTED
}, function (t2) {
User.find({
where: {
username: 'jan'
},
}, {
lock: t2.LOCK.UPDATE,
transaction: t2
}).then(function () {
t2Spy()
t2.commit().then(function () {
expect(t2Spy).to.have.been.calledAfter(t1Spy) // Find should not succeed before t1 has comitted
done()
})
})
t1Jan.updateAttributes({
awesome: true
}, { transaction: t1}).then(function () {
t1Spy()
setTimeout(t1.commit.bind(t1), 2000)
})
})
})
})
})
})
it('supports for share', function (done) {
var User = this.sequelize.define('user', {
username: Support.Sequelize.STRING,
awesome: Support.Sequelize.BOOLEAN
})
, self = this
, t1Spy = sinon.spy()
, t2FindSpy = sinon.spy()
, t2UpdateSpy = sinon.spy()
this.sequelize.sync({ force: true }).then(function () {
return User.create({ username: 'jan'})
}).then(function () {
self.sequelize.transaction(function (t1) {
return User.find({
where: {
username: 'jan'
}
}, {
lock: t1.LOCK.SHARE,
transaction: t1
}).then(function (t1Jan) {
self.sequelize.transaction({
isolationLevel: Transaction.ISOLATION_LEVELS.READ_COMMITTED
}, function (t2) {
User.find({
where: {
username: 'jan'
}
}, { transaction: t2}).then(function (t2Jan) {
t2FindSpy()
t2Jan.updateAttributes({
awesome: false
}, {
transaction: t2
}).then(function () {
t2UpdateSpy()
t2.commit().then(function () {
expect(t2FindSpy).to.have.been.calledBefore(t1Spy) // The find call should have returned
expect(t2UpdateSpy).to.have.been.calledAfter(t1Spy) // But the update call should not happen before the first transaction has committed
done()
})
})
})
t1Jan.updateAttributes({
awesome: true
}, {
transaction: t1
}).then(function () {
setTimeout(function () {
t1Spy()
t1.commit()
}, 2000)
})
})
})
})
})
})
})
}
})