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545 lines
17 KiB
545 lines
17 KiB
var should = require('chai').should()
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, assert = require('chai').assert
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, testDb = 'workspace/test.db'
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, fs = require('fs')
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, path = require('path')
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, _ = require('underscore')
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, async = require('async')
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, model = require('../lib/model')
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, Datastore = require('../lib/datastore')
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, Persistence = require('../lib/persistence')
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, Cursor = require('../lib/cursor')
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;
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describe('Cursor', function () {
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var d;
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beforeEach(function (done) {
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d = new Datastore({ filename: testDb });
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d.filename.should.equal(testDb);
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d.inMemoryOnly.should.equal(false);
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async.waterfall([
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function (cb) {
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Persistence.ensureDirectoryExists(path.dirname(testDb), function () {
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fs.exists(testDb, function (exists) {
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if (exists) {
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fs.unlink(testDb, cb);
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} else { return cb(); }
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});
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});
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}
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, function (cb) {
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d.loadDatabase(function (err) {
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assert.isNull(err);
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d.getAllData().length.should.equal(0);
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return cb();
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});
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}
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], done);
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});
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describe('Without sorting', function () {
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beforeEach(function (done) {
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d.insert({ age: 5 }, function (err) {
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d.insert({ age: 57 }, function (err) {
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d.insert({ age: 52 }, function (err) {
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d.insert({ age: 23 }, function (err) {
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d.insert({ age: 89 }, function (err) {
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return done();
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});
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});
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});
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});
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});
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});
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it('Without query, an empty query or a simple query and no skip or limit', function (done) {
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async.waterfall([
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function (cb) {
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var cursor = new Cursor(d);
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cursor.exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(5);
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_.filter(docs, function(doc) { return doc.age === 5; })[0].age.should.equal(5);
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_.filter(docs, function(doc) { return doc.age === 57; })[0].age.should.equal(57);
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_.filter(docs, function(doc) { return doc.age === 52; })[0].age.should.equal(52);
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_.filter(docs, function(doc) { return doc.age === 23; })[0].age.should.equal(23);
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_.filter(docs, function(doc) { return doc.age === 89; })[0].age.should.equal(89);
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cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d, {});
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cursor.exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(5);
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_.filter(docs, function(doc) { return doc.age === 5; })[0].age.should.equal(5);
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_.filter(docs, function(doc) { return doc.age === 57; })[0].age.should.equal(57);
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_.filter(docs, function(doc) { return doc.age === 52; })[0].age.should.equal(52);
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_.filter(docs, function(doc) { return doc.age === 23; })[0].age.should.equal(23);
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_.filter(docs, function(doc) { return doc.age === 89; })[0].age.should.equal(89);
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cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d, { age: { $gt: 23 } });
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cursor.exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(3);
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_.filter(docs, function(doc) { return doc.age === 57; })[0].age.should.equal(57);
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_.filter(docs, function(doc) { return doc.age === 52; })[0].age.should.equal(52);
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_.filter(docs, function(doc) { return doc.age === 89; })[0].age.should.equal(89);
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cb();
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});
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}
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], done);
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});
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it('With an empty collection', function (done) {
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async.waterfall([
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function (cb) {
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d.remove({}, { multi: true }, function(err) { return cb(err); })
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}
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, function (cb) {
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var cursor = new Cursor(d);
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cursor.exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(0);
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cb();
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});
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}
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], done);
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});
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it('With a limit', function (done) {
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var cursor = new Cursor(d);
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cursor.limit(3);
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cursor.exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(3);
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// No way to predict which results are returned of course ...
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done();
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});
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});
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it('With a skip', function (done) {
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var cursor = new Cursor(d);
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cursor.skip(2).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(3);
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// No way to predict which results are returned of course ...
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done();
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});
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});
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it('With a limit and a skip and method chaining', function (done) {
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var cursor = new Cursor(d);
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cursor.limit(4).skip(3); // Only way to know that the right number of results was skipped is if limit + skip > number of results
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cursor.exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(2);
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// No way to predict which results are returned of course ...
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done();
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});
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});
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}); // ===== End of 'Without sorting' =====
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describe('Sorting of the results', function () {
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beforeEach(function (done) {
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// We don't know the order in which docs wil be inserted but we ensure correctness by testing both sort orders
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d.insert({ age: 5 }, function (err) {
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d.insert({ age: 57 }, function (err) {
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d.insert({ age: 52 }, function (err) {
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d.insert({ age: 23 }, function (err) {
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d.insert({ age: 89 }, function (err) {
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return done();
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});
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});
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});
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});
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});
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});
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it('Using one sort', function (done) {
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var cursor, i;
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cursor = new Cursor(d, {});
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cursor.sort({ age: 1 });
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cursor.exec(function (err, docs) {
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assert.isNull(err);
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// Results are in ascending order
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for (i = 0; i < docs.length - 1; i += 1) {
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assert(docs[i].age < docs[i + 1].age)
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}
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cursor.sort({ age: -1 });
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cursor.exec(function (err, docs) {
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assert.isNull(err);
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// Results are in descending order
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for (i = 0; i < docs.length - 1; i += 1) {
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assert(docs[i].age > docs[i + 1].age)
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}
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done();
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});
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});
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});
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it('With an empty collection', function (done) {
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async.waterfall([
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function (cb) {
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d.remove({}, { multi: true }, function(err) { return cb(err); })
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}
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, function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 });
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cursor.exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(0);
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cb();
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});
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}
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], done);
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});
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it('Ability to chain sorting and exec', function (done) {
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var i;
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async.waterfall([
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function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).exec(function (err, docs) {
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assert.isNull(err);
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// Results are in ascending order
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for (i = 0; i < docs.length - 1; i += 1) {
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assert(docs[i].age < docs[i + 1].age)
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}
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cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: -1 }).exec(function (err, docs) {
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assert.isNull(err);
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// Results are in descending order
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for (i = 0; i < docs.length - 1; i += 1) {
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assert(docs[i].age > docs[i + 1].age)
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}
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cb();
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});
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}
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], done);
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});
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it('Using limit and sort', function (done) {
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var i;
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async.waterfall([
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function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).limit(3).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(3);
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docs[0].age.should.equal(5);
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docs[1].age.should.equal(23);
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docs[2].age.should.equal(52);
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cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: -1 }).limit(2).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(2);
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docs[0].age.should.equal(89);
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docs[1].age.should.equal(57);
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cb();
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});
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}
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], done);
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});
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it('Using a limit higher than total number of docs shouldnt cause an error', function (done) {
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var i;
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async.waterfall([
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function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).limit(7).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(5);
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docs[0].age.should.equal(5);
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docs[1].age.should.equal(23);
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docs[2].age.should.equal(52);
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docs[3].age.should.equal(57);
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docs[4].age.should.equal(89);
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cb();
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});
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}
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], done);
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});
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it('Using limit and skip with sort', function (done) {
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var i;
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async.waterfall([
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function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).limit(1).skip(2).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(1);
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docs[0].age.should.equal(52);
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cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).limit(3).skip(1).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(3);
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docs[0].age.should.equal(23);
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docs[1].age.should.equal(52);
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docs[2].age.should.equal(57);
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cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: -1 }).limit(2).skip(2).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(2);
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docs[0].age.should.equal(52);
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docs[1].age.should.equal(23);
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cb();
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});
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}
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], done);
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});
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it('Using too big a limit and a skip with sort', function (done) {
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var i;
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async.waterfall([
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function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).limit(8).skip(2).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(3);
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docs[0].age.should.equal(52);
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docs[1].age.should.equal(57);
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docs[2].age.should.equal(89);
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cb();
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});
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}
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], done);
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});
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it('Using too big a skip with sort should return no result', function (done) {
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var i;
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async.waterfall([
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function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).skip(5).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(0);
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cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).skip(7).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(0);
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cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).limit(3).skip(7).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(0);
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cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d);
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cursor.sort({ age: 1 }).limit(6).skip(7).exec(function (err, docs) {
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assert.isNull(err);
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docs.length.should.equal(0);
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cb();
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});
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}
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], done);
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});
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it('Sorting strings', function (done) {
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async.waterfall([
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function (cb) {
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d.remove({}, { multi: true }, function (err) {
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if (err) { return cb(err); }
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d.insert({ name: 'jako'}, function () {
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d.insert({ name: 'jakeb' }, function () {
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d.insert({ name: 'sue' }, function () {
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return cb();
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});
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});
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});
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});
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}
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, function (cb) {
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var cursor = new Cursor(d, {});
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cursor.sort({ name: 1 }).exec(function (err, docs) {
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docs.length.should.equal(3);
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docs[0].name.should.equal('jakeb');
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docs[1].name.should.equal('jako');
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docs[2].name.should.equal('sue');
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return cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d, {});
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cursor.sort({ name: -1 }).exec(function (err, docs) {
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docs.length.should.equal(3);
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docs[0].name.should.equal('sue');
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docs[1].name.should.equal('jako');
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docs[2].name.should.equal('jakeb');
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return cb();
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});
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}
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], done);
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});
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it('Sorting nested fields with dates', function (done) {
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var doc1, doc2, doc3;
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async.waterfall([
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function (cb) {
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d.remove({}, { multi: true }, function (err) {
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if (err) { return cb(err); }
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d.insert({ event: { recorded: new Date(400) } }, function (err, _doc1) {
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doc1 = _doc1;
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d.insert({ event: { recorded: new Date(60000) } }, function (err, _doc2) {
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doc2 = _doc2;
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d.insert({ event: { recorded: new Date(32) } }, function (err, _doc3) {
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doc3 = _doc3;
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return cb();
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});
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});
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});
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});
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}
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, function (cb) {
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var cursor = new Cursor(d, {});
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cursor.sort({ "event.recorded": 1 }).exec(function (err, docs) {
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docs.length.should.equal(3);
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docs[0]._id.should.equal(doc3._id);
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docs[1]._id.should.equal(doc1._id);
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docs[2]._id.should.equal(doc2._id);
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return cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d, {});
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cursor.sort({ "event.recorded": -1 }).exec(function (err, docs) {
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docs.length.should.equal(3);
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docs[0]._id.should.equal(doc2._id);
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docs[1]._id.should.equal(doc1._id);
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docs[2]._id.should.equal(doc3._id);
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return cb();
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});
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}
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], done);
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});
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it('Sorting when some fields are undefined', function (done) {
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async.waterfall([
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function (cb) {
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d.remove({}, { multi: true }, function (err) {
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if (err) { return cb(err); }
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d.insert({ name: 'jako', other: 2 }, function () {
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d.insert({ name: 'jakeb', other: 3 }, function () {
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d.insert({ name: 'sue' }, function () {
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d.insert({ name: 'henry', other: 4 }, function () {
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return cb();
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});
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});
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});
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});
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});
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}
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, function (cb) {
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var cursor = new Cursor(d, {});
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cursor.sort({ other: 1 }).exec(function (err, docs) {
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docs.length.should.equal(4);
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docs[0].name.should.equal('sue');
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assert.isUndefined(docs[0].other);
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docs[1].name.should.equal('jako');
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docs[1].other.should.equal(2);
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docs[2].name.should.equal('jakeb');
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docs[2].other.should.equal(3);
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docs[3].name.should.equal('henry');
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docs[3].other.should.equal(4);
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return cb();
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});
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}
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, function (cb) {
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var cursor = new Cursor(d, { name: { $in: [ 'suzy', 'jakeb', 'jako' ] } });
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cursor.sort({ other: -1 }).exec(function (err, docs) {
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docs.length.should.equal(2);
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docs[0].name.should.equal('jakeb');
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docs[0].other.should.equal(3);
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docs[1].name.should.equal('jako');
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docs[1].other.should.equal(2);
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return cb();
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});
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}
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], done);
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});
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it('Sorting when all fields are undefined', function (done) {
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async.waterfall([
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function (cb) {
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d.remove({}, { multi: true }, function (err) {
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if (err) { return cb(err); }
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d.insert({ name: 'jako'}, function () {
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d.insert({ name: 'jakeb' }, function () {
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d.insert({ name: 'sue' }, function () {
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return cb();
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});
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});
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});
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});
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}
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, function (cb) {
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var cursor = new Cursor(d, {});
|
|
cursor.sort({ other: 1 }).exec(function (err, docs) {
|
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docs.length.should.equal(3);
|
|
return cb();
|
|
});
|
|
}
|
|
, function (cb) {
|
|
var cursor = new Cursor(d, { name: { $in: [ 'sue', 'jakeb', 'jakob' ] } });
|
|
cursor.sort({ other: -1 }).exec(function (err, docs) {
|
|
docs.length.should.equal(2);
|
|
return cb();
|
|
});
|
|
}
|
|
], done);
|
|
});
|
|
|
|
}); // ===== End of 'Sorting' =====
|
|
|
|
});
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|
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