The JavaScript Database, for Node.js, nw.js, electron and the browser
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nedb/test/indexes.test.js

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2.6 KiB

var Index = require('../lib/indexes')
, customUtils = require('../lib/customUtils')
, should = require('chai').should()
, assert = require('chai').assert
, _ = require('underscore')
, async = require('async')
, model = require('../lib/model')
;
describe('Indexing', function () {
describe('Insertion', function () {
it('Can insert pointers to documents in the index correctly when they have the field', function () {
var idx = new Index({ fieldName: 'tf' })
, doc1 = { a: 5, tf: 'hello' }
, doc2 = { a: 8, tf: 'world' }
, doc3 = { a: 2, tf: 'bloup' }
;
idx.insert(doc1);
idx.insert(doc2);
idx.insert(doc3);
// The underlying BST now has 3 nodes which contain the docs where it's expected
idx.tree.getNumberOfKeys().should.equal(3);
assert.deepEqual(idx.tree.search('hello'), [{ a: 5, tf: 'hello' }]);
assert.deepEqual(idx.tree.search('world'), [{ a: 8, tf: 'world' }]);
assert.deepEqual(idx.tree.search('bloup'), [{ a: 2, tf: 'bloup' }]);
// The nodes contain pointers to the actual documents
idx.tree.search('world')[0].should.equal(doc2);
idx.tree.search('bloup')[0].a = 42;
doc3.a.should.equal(42);
});
it('Inserting twice for the same fieldName in a unique index will result in an error thrown', function () {
var idx = new Index({ fieldName: 'tf', unique: true })
, doc1 = { a: 5, tf: 'hello' }
;
idx.insert(doc1);
idx.tree.getNumberOfKeys().should.equal(1);
(function () { idx.insert(doc1); }).should.throw();
});
it('Inserting twice for a fieldName the docs dont have with a unique index results in an error thrown', function () {
var idx = new Index({ fieldName: 'nope', unique: true })
, doc1 = { a: 5, tf: 'hello' }
, doc2 = { a: 5, tf: 'world' }
;
idx.insert(doc1);
idx.tree.getNumberOfKeys().should.equal(1);
(function () { idx.insert(doc2); }).should.throw();
});
it('Inserting twice for a fieldName the docs dont have with a unique and sparse index will not throw, since the docs will be non indexed', function () {
var idx = new Index({ fieldName: 'nope', unique: true, sparse: true })
, doc1 = { a: 5, tf: 'hello' }
, doc2 = { a: 5, tf: 'world' }
;
idx.insert(doc1);
idx.insert(doc2);
idx.tree.getNumberOfKeys().should.equal(0); // Docs are not indexed
assert.deepEqual(idx.nonindexedDocs, [doc1, doc2]); // Pointers are stored in the non indexed documents
idx.nonindexedDocs[1].a = 12;
doc2.a.should.equal(12);
});
}); // ==== End of 'Insertion' ==== //
});