transaction.test.js
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'use strict';
var chai = require('chai')
, expect = chai.expect
, Support = require(__dirname + '/support')
, dialect = Support.getTestDialect()
, Promise = require(__dirname + '/../lib/promise')
, Transaction = require(__dirname + '/../lib/transaction')
, sinon = require('sinon')
, current = Support.sequelize;
if (current.dialect.supports.transactions) {
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');
});
});
describe('autoCallback', function() {
it('supports automatically committing', function() {
return this.sequelize.transaction(function(t) {
return Promise.resolve();
});
});
it('supports automatically rolling back with a thrown error', function() {
return expect(this.sequelize.transaction(function(t) {
throw new Error('Yolo');
})).to.eventually.be.rejected;
});
it('supports automatically rolling back with a rejection', function() {
return expect(this.sequelize.transaction(function(t) {
return Promise.reject('Swag');
})).to.eventually.be.rejected;
});
it('errors when no promise chain is returned', function() {
return expect(this.sequelize.transaction(function(t) {
})).to.eventually.be.rejected;
});
});
it('does not allow queries after commit', function() {
var self = this;
return expect(
this.sequelize.transaction().then(function(t) {
return self.sequelize.query('SELECT 1+1', null, {transaction: t, raw: true}).then(function() {
return t.commit();
}).then(function() {
return self.sequelize.query('SELECT 1+1', null, {transaction: t, raw: true});
});
})
).to.eventually.be.rejected;
});
it('does not allow queries after rollback', function() {
var self = this;
return expect(
this.sequelize.transaction().then(function(t) {
return self.sequelize.query('SELECT 1+1', null, {transaction: t, raw: true}).then(function() {
return t.commit();
}).then(function() {
return self.sequelize.query('SELECT 1+1', null, {transaction: t, raw: true});
});
})
).to.eventually.be.rejected;
});
if (current.dialect.supports.lock) {
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().then(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
}).then(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().then(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
}).then(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);
});
});
});
});
});
});
});
}
});
}