deferrable.test.js
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'use strict';
const chai = require('chai'),
expect = chai.expect,
Support = require('../support'),
Sequelize = require('../../../index');
if (!Support.sequelize.dialect.supports.deferrableConstraints) {
return;
}
describe(Support.getTestDialectTeaser('Sequelize'), () => {
describe('Deferrable', () => {
const describeDeferrableTest = (title, defineModels) => {
describe(title, () => {
beforeEach(function() {
this.run = async function(deferrable, options) {
options = options || {};
const taskTableName = options.taskTableName || `tasks_${Support.rand()}`;
const transactionOptions = { deferrable: Sequelize.Deferrable.SET_DEFERRED, ...options };
const userTableName = `users_${Support.rand()}`;
const { Task, User } = await defineModels({ sequelize: this.sequelize, userTableName, deferrable, taskTableName });
return this.sequelize.transaction(transactionOptions, async t => {
const task0 = await Task
.create({ title: 'a task', user_id: -1 }, { transaction: t });
const [task, user] = await Promise.all([task0, User.create({}, { transaction: t })]);
task.user_id = user.id;
return task.save({ transaction: t });
});
};
});
describe('NOT', () => {
it('does not allow the violation of the foreign key constraint', async function() {
await expect(this.run(Sequelize.Deferrable.NOT)).to.eventually.be.rejectedWith(Sequelize.ForeignKeyConstraintError);
});
});
describe('INITIALLY_IMMEDIATE', () => {
it('allows the violation of the foreign key constraint if the transaction is deferred', async function() {
const task = await this
.run(Sequelize.Deferrable.INITIALLY_IMMEDIATE);
expect(task.title).to.equal('a task');
expect(task.user_id).to.equal(1);
});
it('does not allow the violation of the foreign key constraint if the transaction is not deffered', async function() {
await expect(this.run(Sequelize.Deferrable.INITIALLY_IMMEDIATE, {
deferrable: undefined
})).to.eventually.be.rejectedWith(Sequelize.ForeignKeyConstraintError);
});
it('allows the violation of the foreign key constraint if the transaction deferres only the foreign key constraint', async function() {
const taskTableName = `tasks_${Support.rand()}`;
const task = await this
.run(Sequelize.Deferrable.INITIALLY_IMMEDIATE, {
deferrable: Sequelize.Deferrable.SET_DEFERRED([`${taskTableName}_user_id_fkey`]),
taskTableName
});
expect(task.title).to.equal('a task');
expect(task.user_id).to.equal(1);
});
});
describe('INITIALLY_DEFERRED', () => {
it('allows the violation of the foreign key constraint', async function() {
const task = await this
.run(Sequelize.Deferrable.INITIALLY_DEFERRED);
expect(task.title).to.equal('a task');
expect(task.user_id).to.equal(1);
});
});
});
};
describeDeferrableTest('set in define', async ({ sequelize, userTableName, deferrable, taskTableName }) => {
const User = sequelize.define(
'User', { name: Sequelize.STRING }, { tableName: userTableName }
);
const Task = sequelize.define(
'Task', {
title: Sequelize.STRING,
user_id: {
allowNull: false,
type: Sequelize.INTEGER,
references: {
model: userTableName,
key: 'id',
deferrable
}
}
}, {
tableName: taskTableName
}
);
await User.sync({ force: true });
await Task.sync({ force: true });
return { Task, User };
});
describeDeferrableTest('set in addConstraint', async ({ sequelize, userTableName, deferrable, taskTableName }) => {
const User = sequelize.define(
'User', { name: Sequelize.STRING }, { tableName: userTableName }
);
const Task = sequelize.define(
'Task', {
title: Sequelize.STRING,
user_id: {
allowNull: false,
type: Sequelize.INTEGER
}
}, {
tableName: taskTableName
}
);
await User.sync({ force: true });
await Task.sync({ force: true });
await sequelize.getQueryInterface().addConstraint(taskTableName, {
fields: ['user_id'],
type: 'foreign key',
name: `${taskTableName}_user_id_fkey`,
deferrable,
references: {
table: userTableName,
field: 'id'
}
});
return { Task, User };
});
});
});