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// Copyright IBM Corp. 2015,2019. All Rights Reserved.
// Node module: loopback-connector
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT
'use strict';
const expect = require('chai').expect;
const SQLConnector = require('../lib/sql');
const ParameterizedSQL = SQLConnector.ParameterizedSQL;
const testConnector = require('./connectors/test-sql-connector');
const juggler = require('loopback-datasource-juggler');
const ds = new juggler.DataSource({
connector: testConnector,
debug: true,
});
/* eslint-disable one-var */
let connector;
let Customer;
let Order;
/* eslint-enable one-var */
describe('sql connector', function() {
before(function() {
connector = ds.connector;
connector._tables = {};
connector._models = {};
Customer = ds.createModel('customer',
{
name: {
id: true,
type: String,
testdb: {
column: 'NAME',
dataType: 'VARCHAR',
dataLength: 32,
},
}, middleName: {
type: String,
name: 'middle_name',
postgresql: {
column: 'MIDDLENAME',
},
}, lastName: {
type: String,
name: 'last_name',
testdb: {
column: 'LASTNAME',
},
}, vip: {
type: Boolean,
testdb: {
column: 'VIP',
},
}, primaryAddress: {
type: String,
name: 'primary_address',
}, token: {
type: String,
name: 'token',
readOnly: true,
testdb: {
column: 'TOKEN',
},
},
address: String,
},
{testdb: {table: 'CUSTOMER'}});
Order = ds.createModel('order',
{
id: {
id: true,
generated: true,
type: Number,
testdb: {
column: 'orderId',
dataType: 'INTEGER',
},
}, des: {
type: String,
name: 'des',
testdb: {
column: 'description',
},
},
},
{testdb: {table: 'ORDER'}});
});
// tests for column names mapping are moved to name-mapping.test.js
it('should map table name', function() {
const table = connector.table('customer');
expect(table).to.eql('CUSTOMER');
});
it('should find column metadata', function() {
const column = connector.columnMetadata('customer', 'name');
expect(column).to.eql({
column: 'NAME',
dataType: 'VARCHAR',
dataLength: 32,
});
});
it('should map property name', function() {
const prop = connector.propertyName('customer', 'NAME');
expect(prop).to.eql('name');
});
it('should find escaped id column name', function() {
const idCol = connector.idColumnEscaped('customer');
expect(idCol).to.eql('`NAME`');
});
it('should find escaped table name', function() {
const table = connector.tableEscaped('customer');
expect(table).to.eql('`CUSTOMER`');
});
it('should find escaped column name', function() {
const column = connector.columnEscaped('customer', 'vip');
expect(column).to.eql('`VIP`');
});
it('should convert to escaped id column value', function() {
const column = connector.idColumnValue('customer', 'John');
expect(column).to.eql('John');
});
it('builds where', function() {
const where = connector.buildWhere('customer', {name: 'John'});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME`=?',
params: ['John'],
});
});
it('builds where with null', function() {
const where = connector.buildWhere('customer', {name: null});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME` IS NULL',
params: [],
});
});
it('builds where with inq', function() {
const where = connector.buildWhere('customer', {name: {inq: ['John', 'Mary']}});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME` IN (?,?)',
params: ['John', 'Mary'],
});
});
it('builds where with or', function() {
const where = connector.buildWhere('customer',
{or: [{name: 'John'}, {name: 'Mary'}]});
expect(where.toJSON()).to.eql({
sql: 'WHERE ((`NAME`=?) OR (`NAME`=?))',
params: ['John', 'Mary'],
});
});
it('builds where with and', function() {
const where = connector.buildWhere('customer',
{and: [{name: 'John'}, {vip: true}]});
expect(where.toJSON()).to.eql({
sql: 'WHERE ((`NAME`=?) AND (`VIP`=?))',
params: ['John', true],
});
});
it('builds where with a regexp string that does not have flags', function() {
const where = connector.buildWhere('customer', {
name: {
regexp: '^J',
},
});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME` REGEXP ?',
params: ['^J'],
});
});
it('builds where with a regexp string that has flags', function() {
const where = connector.buildWhere('customer', {
name: {
regexp: '^J/i',
},
});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME` REGEXP ?',
params: ['^J/i'],
});
});
it('builds where with a regexp literal that does not have flags', function() {
const where = connector.buildWhere('customer', {
name: {
regexp: /^J/,
},
});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME` REGEXP ?',
params: [/^J/],
});
});
it('builds where with a regexp literal that has flags', function() {
const where = connector.buildWhere('customer', {
name: {
regexp: /^J/i,
},
});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME` REGEXP ?',
params: [/^J/i],
});
});
it('builds where with a regexp object that does not have flags', function() {
const where = connector.buildWhere('customer', {
name: {
regexp: new RegExp(/^J/),
},
});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME` REGEXP ?',
params: [/^J/],
});
});
it('builds where with a regexp object that has flags', function() {
const where = connector.buildWhere('customer', {
name: {
regexp: new RegExp(/^J/i),
},
});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME` REGEXP ?',
params: [new RegExp(/^J/i)],
});
});
it('builds where with nesting and/or', function() {
const where = connector.buildWhere('customer',
{and: [{name: 'John'}, {or: [{vip: true}, {address: null}]}]});
expect(where.toJSON()).to.eql({
sql: 'WHERE ((`NAME`=?) AND (((`VIP`=?) OR (`ADDRESS` IS NULL))))',
params: ['John', true],
});
});
it('builds where and ignores invalid clauses in or', function() {
const where = connector.buildWhere('customer', {
name: 'icecream',
or: [{notAColumnName: ''}, {notAColumnNameEither: ''}],
});
expect(where.sql).to.not.match(/ AND $/);
});
it('builds where and drops an or with only invalid clauses', function() {
const where = connector.buildWhere('customer', {
name: 'icecream',
or: [{notAColumnName: ''}, {notAColumnNameEither: ''}],
});
expect(where.toJSON()).to.eql({
sql: 'WHERE `NAME`=?',
params: ['icecream'],
});
});
it('builds empty where for an or with only invalid clauses', function() {
const where = connector.buildWhere('customer', {
or: [{notAColumnName: ''}, {notAColumnNameEither: ''}],
});
expect(where.toJSON()).to.eql({
sql: '',
params: [],
});
});
it('builds empty where for an and with only invalid clauses', function() {
const where = connector.buildWhere('customer', {
and: [{notAColumnName: ''}, {notAColumnNameEither: ''}],
});
expect(where.toJSON()).to.eql({
sql: '',
params: [],
});
});
it('builds where and drops a nested or with only invalid clauses', function() {
const where = connector.buildWhere('customer', {
and: [{name: 'John'}, {or: [{notAColumnName: ''}]}],
});
expect(where.toJSON()).to.eql({
sql: 'WHERE ((`NAME`=?))',
params: ['John'],
});
});
it('builds order by with one field', function() {
const orderBy = connector.buildOrderBy('customer', 'name');
expect(orderBy).to.eql('ORDER BY `NAME`');
});
it('builds order by with two fields', function() {
const orderBy = connector.buildOrderBy('customer', ['name', 'vip']);
expect(orderBy).to.eql('ORDER BY `NAME`,`VIP`');
});
it('builds order by with two fields and dirs', function() {
const orderBy = connector.buildOrderBy('customer', ['name ASC', 'vip DESC']);
expect(orderBy).to.eql('ORDER BY `NAME` ASC,`VIP` DESC');
});
it('builds fields for columns', function() {
const fields = connector.buildFields('customer',
{name: 'John', vip: true, unknown: 'Random'});
expect(fields.names).to.eql(['`NAME`', '`VIP`']);
expect(fields.columnValues[0].toJSON()).to.eql(
{sql: '?', params: ['John']},
);
expect(fields.columnValues[1].toJSON()).to.eql(
{sql: '?', params: [true]},
);
});
it('builds fields for UPDATE without readOnlys', function() {
const fields = connector.buildFieldsForReplace('customer', {
middleName: '',
lastName: 'Libert',
vip: true,
token: null,
address: '1031 NW 7th Ave, Fort Lauderdale, Florida, United States',
primaryAddress: '1031 NW 7th Ave, Fort Lauderdale, Florida, United States',
});
expect(fields.toJSON()).to.eql({
sql: 'SET `middle_name`=?,`LASTNAME`=?,`VIP`=?,`primary_address`=?,`ADDRESS`=?',
params: [
'',
'Libert',
true,
'1031 NW 7th Ave, Fort Lauderdale, Florida, United States',
'1031 NW 7th Ave, Fort Lauderdale, Florida, United States',
],
});
});
it('builds fields for UPDATE without ids', function() {
const fields = connector.buildFieldsForUpdate('customer',
{name: 'John', vip: true});
expect(fields.toJSON()).to.eql({
sql: 'SET `VIP`=?',
params: [true],
});
});
it('builds fields for UPDATE with ids', function() {
const fields = connector.buildFieldsForUpdate('customer',
{name: 'John', vip: true}, false);
expect(fields.toJSON()).to.eql({
sql: 'SET `NAME`=?,`VIP`=?',
params: ['John', true],
});
});
it('builds column names for SELECT', function() {
const cols = connector.buildColumnNames('customer');
expect(cols).to.eql('`NAME`,`middle_name`,`LASTNAME`,`VIP`,' +
'`primary_address`,`TOKEN`,`ADDRESS`');
});
it('builds column names with true fields filter for SELECT', function() {
const cols = connector.buildColumnNames('customer', {fields: {name: true}});
expect(cols).to.eql('`NAME`');
});
it('builds column names with false fields filter for SELECT', function() {
const cols = connector.buildColumnNames('customer', {
fields: {
name: false,
primaryAddress: false,
lastName: false,
token: false,
middleName: false,
},
});
expect(cols).to.eql('`VIP`,`ADDRESS`');
});
it('builds column names with array fields filter for SELECT', function() {
const cols = connector.buildColumnNames('customer', {fields: ['name']});
expect(cols).to.eql('`NAME`');
});
it('builds DELETE', function() {
const sql = connector.buildDelete('customer', {name: 'John'});
expect(sql.toJSON()).to.eql({
sql: 'DELETE FROM `CUSTOMER` WHERE `NAME`=$1',
params: ['John'],
});
});
it('builds UPDATE', function() {
const sql = connector.buildUpdate('customer', {name: 'John'}, {vip: false});
expect(sql.toJSON()).to.eql({
sql: 'UPDATE `CUSTOMER` SET `VIP`=$1 WHERE `NAME`=$2',
params: [false, 'John'],
});
});
it('builds SELECT', function() {
const sql = connector.buildSelect('customer', {
order: 'name',
limit: 5,
where: {or: [{name: 'Top Cat'}, {address: 'Trash can'}], vip: true},
});
expect(sql.toJSON()).to.eql({
sql:
'SELECT `NAME`,`middle_name`,`LASTNAME`,`VIP`,`primary_address`,' +
'`TOKEN`,`ADDRESS` FROM `CUSTOMER` WHERE ((`NAME`=$1) OR (`ADDRESS`=$2)) ' +
'AND `VIP`=$3 ORDER BY `NAME` LIMIT 5',
params: ['Top Cat', 'Trash can', true],
});
});
it('builds SELECT with where', function() {
const sql = connector.buildSelect('customer',
{order: 'name', limit: 5, where: {name: 'John'}});
expect(sql.toJSON()).to.eql({
sql: 'SELECT `NAME`,`middle_name`,`LASTNAME`,`VIP`,`primary_address`,`TOKEN`,' +
'`ADDRESS` FROM `CUSTOMER`' +
' WHERE `NAME`=$1 ORDER BY `NAME` LIMIT 5',
params: ['John'],
});
});
it('builds INSERT', function() {
const sql = connector.buildInsert('customer', {name: 'John', vip: true});
expect(sql.toJSON()).to.eql({
sql: 'INSERT INTO `CUSTOMER`(`NAME`,`VIP`) VALUES($1,$2)',
params: ['John', true],
});
});
it('normalizes a SQL statement from string', function() {
const sql = 'SELECT * FROM `CUSTOMER`';
const stmt = new ParameterizedSQL(sql);
expect(stmt.toJSON()).to.eql({sql: sql, params: []});
});
it('normalizes a SQL statement from object without params', function() {
const sql = {sql: 'SELECT * FROM `CUSTOMER`'};
const stmt = new ParameterizedSQL(sql);
expect(stmt.toJSON()).to.eql({sql: sql.sql, params: []});
});
it('normalizes a SQL statement from object with params', function() {
const sql =
{sql: 'SELECT * FROM `CUSTOMER` WHERE `NAME`=?', params: ['John']};
const stmt = new ParameterizedSQL(sql);
expect(stmt.toJSON()).to.eql({sql: sql.sql, params: ['John']});
});
it('should throw if the statement is not a string or object', function() {
expect(function() {
/* jshint unused:false */
const stmt = new ParameterizedSQL(true);
}).to.throw('sql must be a string');
});
it('concats SQL statements', function() {
let stmt1 = {sql: 'SELECT * from `CUSTOMER`'};
const where = {sql: 'WHERE `NAME`=?', params: ['John']};
stmt1 = ParameterizedSQL.append(stmt1, where);
expect(stmt1.toJSON()).to.eql(
{sql: 'SELECT * from `CUSTOMER` WHERE `NAME`=?', params: ['John']},
);
});
it('concats string SQL statements', function() {
let stmt1 = 'SELECT * from `CUSTOMER`';
const where = {sql: 'WHERE `NAME`=?', params: ['John']};
stmt1 = ParameterizedSQL.append(stmt1, where);
expect(stmt1.toJSON()).to.eql(
{sql: 'SELECT * from `CUSTOMER` WHERE `NAME`=?', params: ['John']},
);
});
it('should throw if params does not match placeholders', function() {
expect(function() {
let stmt1 = 'SELECT * from `CUSTOMER`';
const where = {sql: 'WHERE `NAME`=?', params: ['John', 'Mary']};
stmt1 = ParameterizedSQL.append(stmt1, where);
}).to.throw('must match the number of params');
});
it('should allow execute(sql, callback)', function(done) {
connector.execute('SELECT * FROM `CUSTOMER`', done);
});
it('should allow execute(sql, params, callback)', function(done) {
connector.execute('SELECT * FROM `CUSTOMER` WHERE `NAME`=$1',
['xyz'], done);
});
it('should allow execute(sql, params, options, callback)', function(done) {
connector.execute('SELECT * FROM `CUSTOMER` WHERE `NAME`=$1',
['xyz'], {transaction: true}, done);
});
it('should throw if params is not an array for execute()', function() {
expect(function() {
connector.execute('SELECT * FROM `CUSTOMER`', 'xyz', function() {
});
}).to.throw('params must be an array');
});
it('should throw if options is not an object for execute()', function() {
expect(function() {
connector.execute('SELECT * FROM `CUSTOMER`', [], 'xyz', function() {
});
}).to.throw('options must be an object');
});
it('should throw if callback is not a function for execute()', function() {
expect(function() {
connector.execute('SELECT * FROM `CUSTOMER`', [], {}, 'xyz');
}).to.throw('callback must be a function');
});
it('should invoke hooks', function(done) {
const events = [];
connector.observe('before execute', function(ctx, next) {
expect(ctx.req.sql).be.a('string');
expect(ctx.req.params).be.a('array');
events.push('before execute');
next();
});
connector.observe('after execute', function(ctx, next) {
expect(ctx.res).be.an('array');
events.push('after execute');
next();
});
Customer.find(function(err, results) {
expect(events).to.eql(['before execute', 'after execute']);
done(err, results);
});
});
it('should throw if the event listener limit is reached', function() {
ds.connected = false;
function runExecute() {
return connector.execute('SELECT * FROM `CUSTOMER`', function(err) {
throw err;
});
}
for (let i = 0; i < 16; i++) {
runExecute();
}
expect(function() { runExecute(); }).to.throw(
'Event listener limit reached. ' +
'Increase maxOfflineRequests value in datasources.json.',
);
ds.connected = true;
ds.removeAllListeners(['connected']);
});
it('should not throw if the event listener limit is not reached', function() {
ds.connected = false;
function runExecute() {
return connector.execute('SELECT * FROM `CUSTOMER`', function(err) {
throw err;
});
}
for (let i = 0; i < 15; i++) {
runExecute();
}
expect(function() { runExecute(); }).to.not.throw();
ds.connected = true;
});
it('should return null for INSERT multiple rows if multiInsertSupported is false',
function() {
connector.multiInsertSupported = false;
const sql = connector.buildInsertAll('customer', [
{name: 'Adam', middleName: 'abc', vip: true},
{name: 'Test', middleName: null, vip: false},
]);
// eslint-disable-next-line no-unused-expressions
expect(sql).to.be.null;
});
it('should return null for INSERT multiple rows if multiInsertSupported not set',
function() {
const sql = connector.buildInsertAll('customer', [
{name: 'Adam', middleName: 'abc', vip: true},
{name: 'Test', middleName: null, vip: false},
]);
// eslint-disable-next-line no-unused-expressions
expect(sql).to.be.null;
});
context('when multiInsertSupported is true', function() {
beforeEach(function() {
connector.multiInsertSupported = true;
});
it('should build INSERT for multiple rows', function() {
connector.multiInsertSupported = true;
const sql = connector.buildInsertAll('customer', [
{name: 'Adam', middleName: 'abc', vip: true},
{name: 'Test', middleName: null, vip: false},
]);
expect(sql.toJSON()).to.eql({
sql:
'INSERT INTO `CUSTOMER`(`NAME`,`middle_name`,`VIP`) VALUES ($1,$2,$3), ($4,$5,$6)',
params: ['Adam', 'abc', true, 'Test', null, false],
});
});
it('should build INSERT for array w/ undefined properties in first row', function() {
connector.multiInsertSupported = true;
const sql = connector.buildInsertAll('customer', [
{name: 'Adam', middleName: 'abc'},
{name: 'Test', middleName: null, vip: false},
]);
expect(sql.toJSON()).to.eql({
sql:
'INSERT INTO `CUSTOMER`(`NAME`,`middle_name`,`VIP`) VALUES ($1,$2,$3), ($4,$5,$6)',
params: ['Adam', 'abc', null, 'Test', null, false],
});
});
context('getInsertedDataArray', function() {
context('when id column is auto-generated', function() {
it('should return back data with id column', function() {
connector.multiInsertSupported = true;
const insertedArr = connector.getInsertedDataArray('order', [1, 2], [
{des: 'Description 1'},
{des: 'Description 2'},
]);
expect(insertedArr).to.eql([
{id: 1, des: 'Description 1'},
{id: 2, des: 'Description 2'},
]);
});
});
context('when id column is not auto-generated', function() {
it('should return back same data', function() {
connector.multiInsertSupported = true;
const insertedArr = connector.getInsertedDataArray('customer', [], [
{name: 'Adam', middleName: 'abc', vip: true},
{name: 'Test', middleName: null, vip: false},
]);
expect(insertedArr).to.eql([
{name: 'Adam', middleName: 'abc', vip: true},
{name: 'Test', middleName: null, vip: false},
]);
});
});
});
});
});
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