@mysql/xdevapi
Version:
MySQL Connector/Node.js - A Node.js driver for MySQL using the X Protocol and X DevAPI.
217 lines (173 loc) • 8.7 kB
JavaScript
/*
* Copyright (c) 2018, 2023, Oracle and/or its affiliates.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2.0, as
* published by the Free Software Foundation.
*
* This program is also distributed with certain software (including
* but not limited to OpenSSL) that is licensed under separate terms,
* as designated in a particular file or component or in included license
* documentation. The authors of MySQL hereby grant you an
* additional permission to link the program and your derivative works
* with the separately licensed software that they have included with
* MySQL.
*
* Without limiting anything contained in the foregoing, this file,
* which is part of MySQL Connector/Node.js, is also subject to the
* Universal FOSS Exception, version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License, version 2.0, for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
'use strict';
/* eslint-env node, mocha */
const expect = require('chai').expect;
const rowResult = require('../../../lib/DevAPI/RowResult');
const td = require('testdouble');
describe('RowResult', () => {
let toArray;
beforeEach('create fakes', () => {
toArray = td.function();
});
afterEach('reset fakes', () => {
td.reset();
});
context('fetchAll()', () => {
it('returns an empty array when there are no items in the result set', () => {
expect(rowResult().fetchAll()).to.deep.equal([]);
expect(rowResult({ results: undefined }).fetchAll()).to.deep.equal([]);
expect(rowResult({ results: [] }).fetchAll()).to.deep.equal([]);
expect(rowResult({ results: [[]] }).fetchAll()).to.deep.equal([]);
expect(rowResult({ results: [null] }).fetchAll()).to.deep.equal([]);
expect(rowResult({ results: [[null]] }).fetchAll()).to.deep.equal([]);
});
it('returns an array containing the data counterpart of each item in the result set', () => {
const row = { toArray };
const rows = ['foo', 'bar'];
const integerType = 'baz';
td.when(toArray({ integerType })).thenReturn(rows[1]);
td.when(toArray({ integerType }), { times: 1 }).thenReturn(rows[0]);
expect(rowResult({ results: [[row, row]], integerType }).fetchAll()).to.deep.equal(rows);
});
it('is aware that fetchOne() might have been used before', () => {
const row = { toArray };
const rows = ['foo', 'bar'];
const integerType = 'baz';
td.when(toArray({ integerType })).thenReturn(rows[1]);
td.when(toArray({ integerType }), { times: 1 }).thenReturn(rows[0]);
const results = [[null, null, row, row]];
expect(rowResult({ results, integerType }).fetchAll()).to.deep.equal(rows);
});
});
context('fetchOne()', () => {
it('returns undefined when there are no items in the result set', () => {
/* eslint-disable no-unused-expressions */
expect(rowResult().fetchOne()).to.not.exist;
expect(rowResult({ results: undefined }).fetchOne()).to.not.exist;
expect(rowResult({ results: [] }).fetchOne()).to.not.exist;
expect(rowResult({ results: [[]] }).fetchOne()).to.not.exist;
expect(rowResult({ results: [null] }).fetchOne()).to.not.exist;
/* eslint-enable no-unused-expressions */
return expect(rowResult({ results: [[null]] }).fetchOne()).to.not.exist;
});
it('returns the next available item in the result set', () => {
const row = { toArray };
const rows = [['foo']];
const integerType = 'bar';
td.when(toArray({ integerType })).thenReturn(rows[0]);
expect(rowResult({ results: [[row]], integerType }).fetchOne()).to.equal(rows[0]);
});
it('deallocates the memory when a result set item has been consumed', () => {
const row = { toArray };
const res = rowResult({ results: [[row, row]] });
td.when(toArray()).thenReturn(['bar']);
td.when(toArray(), { times: 1 }).thenReturn(['foo']);
res.fetchOne();
const state = res.getResults();
expect(state).to.be.an('array').and.have.lengthOf(1);
expect(state[0]).to.be.an('array').and.have.lengthOf(2);
// eslint-disable-next-line no-unused-expressions
expect(state[0][0]).to.be.null;
expect(state[0][1]).to.equal(row);
});
it('deallocates the memory when the entire result set has been consumed', () => {
const row = { toArray };
const res = rowResult({ results: [[row]] });
res.fetchOne();
const state = res.getResults();
expect(state).to.be.an('array').and.have.lengthOf(1);
return expect(state[0]).to.be.null;
});
});
context('getColumns()', () => {
let getAlias;
beforeEach('create fakes', () => {
getAlias = td.function();
});
afterEach('reset fakes', () => {
td.reset();
});
it('returns the metadata for each item in the result set wrapped as a Column instance', () => {
const res = rowResult({ metadata: [[{ getAlias }, { getAlias }]] });
const columns = res.getColumns();
td.when(getAlias()).thenReturn('bar');
td.when(getAlias(), { times: 1 }).thenReturn('foo');
expect(columns).to.have.lengthOf(2);
expect(columns[0]).to.contain.keys('getColumnLabel');
expect(columns[0].getColumnLabel()).to.equal('foo');
expect(columns[1]).to.contain.keys('getColumnLabel');
expect(columns[1].getColumnLabel()).to.equal('bar');
});
it('returns an empty list if there is no metadata available in the result set', () => {
expect(rowResult({ results: undefined }).getColumns()).to.deep.equal([]);
expect(rowResult({ results: [] }).getColumns()).to.deep.equal([]);
});
});
context('getWarnings()', () => {
it('returns the list of warnings generated by the server for a given operation', () => {
const warnings = ['foo', 'bar'];
expect(rowResult({ warnings }).getWarnings()).to.deep.equal(warnings);
});
});
context('getWarningsCount()', () => {
it('returns the number of warnings generated by the server for a given operation', () => {
const warnings = ['foo', 'bar', 'baz'];
expect(rowResult({ warnings }).getWarningsCount()).to.deep.equal(3);
});
});
context('nextResult()', () => {
let fstCall, sndCall;
beforeEach('create fakes', () => {
fstCall = td.function();
sndCall = td.function();
});
it('returns false if there are no other result sets available', () => {
/* eslint-disable no-unused-expressions */
expect(rowResult().nextResult()).to.be.false;
expect(rowResult({ results: undefined }).nextResult()).to.be.false;
expect(rowResult({ results: [] }).nextResult()).to.be.false;
/* eslint-enable no-unused-expressions */
return expect(rowResult({ results: [['foo']] }).nextResult()).to.be.false;
});
it('returns true if the subsequent result set is empty', () => {
return expect(rowResult({ results: [['foo'], []] }).nextResult()).to.be.true;
});
it('moves the cursor to the next available result set', () => {
const integerType = 'foo';
const res = rowResult({ results: [[{ toArray: fstCall }], [{ toArray: sndCall }]], integerType });
td.when(fstCall({ integerType })).thenReturn(['bar']);
td.when(sndCall({ integerType })).thenReturn(['baz']);
// eslint-disable-next-line no-unused-expressions
expect(res.nextResult()).to.be.true;
expect(res.fetchOne()).to.deep.equal(['baz']);
});
});
});