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248 lines
8.3 KiB
248 lines
8.3 KiB
var Index = require('../lib/indexes')
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, customUtils = require('../lib/customUtils')
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, should = require('chai').should()
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, assert = require('chai').assert
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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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;
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describe('Indexes', function () {
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describe('Insertion', function () {
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it('Can insert pointers to documents in the index correctly when they have the field', function () {
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var idx = new Index({ fieldName: 'tf' })
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, doc1 = { a: 5, tf: 'hello' }
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, doc2 = { a: 8, tf: 'world' }
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, doc3 = { a: 2, tf: 'bloup' }
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;
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idx.insert(doc1);
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idx.insert(doc2);
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idx.insert(doc3);
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// The underlying BST now has 3 nodes which contain the docs where it's expected
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idx.tree.getNumberOfKeys().should.equal(3);
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assert.deepEqual(idx.tree.search('hello'), [{ a: 5, tf: 'hello' }]);
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assert.deepEqual(idx.tree.search('world'), [{ a: 8, tf: 'world' }]);
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assert.deepEqual(idx.tree.search('bloup'), [{ a: 2, tf: 'bloup' }]);
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// The nodes contain pointers to the actual documents
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idx.tree.search('world')[0].should.equal(doc2);
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idx.tree.search('bloup')[0].a = 42;
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doc3.a.should.equal(42);
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});
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it('Inserting twice for the same fieldName in a unique index will result in an error thrown', function () {
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var idx = new Index({ fieldName: 'tf', unique: true })
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, doc1 = { a: 5, tf: 'hello' }
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;
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idx.insert(doc1);
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idx.tree.getNumberOfKeys().should.equal(1);
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(function () { idx.insert(doc1); }).should.throw();
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});
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it('Inserting twice for a fieldName the docs dont have with a unique index results in an error thrown', function () {
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var idx = new Index({ fieldName: 'nope', unique: true })
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, doc1 = { a: 5, tf: 'hello' }
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, doc2 = { a: 5, tf: 'world' }
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;
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idx.insert(doc1);
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idx.tree.getNumberOfKeys().should.equal(1);
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(function () { idx.insert(doc2); }).should.throw();
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});
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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 () {
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var idx = new Index({ fieldName: 'nope', unique: true, sparse: true })
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, doc1 = { a: 5, tf: 'hello' }
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, doc2 = { a: 5, tf: 'world' }
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;
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idx.insert(doc1);
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idx.insert(doc2);
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idx.tree.getNumberOfKeys().should.equal(0); // Docs are not indexed
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assert.deepEqual(idx.nonindexedDocs, [doc1, doc2]); // Pointers are stored in the non indexed documents
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idx.nonindexedDocs[1].a = 12;
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doc2.a.should.equal(12);
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});
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it('Works with dot notation', function () {
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var idx = new Index({ fieldName: 'tf.nested' })
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, doc1 = { a: 5, tf: { nested: 'hello' } }
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, doc2 = { a: 8, tf: { nested: 'world', additional: true } }
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, doc3 = { a: 2, tf: { nested: 'bloup', age: 42 } }
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;
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idx.insert(doc1);
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idx.insert(doc2);
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idx.insert(doc3);
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// The underlying BST now has 3 nodes which contain the docs where it's expected
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idx.tree.getNumberOfKeys().should.equal(3);
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assert.deepEqual(idx.tree.search('hello'), [doc1]);
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assert.deepEqual(idx.tree.search('world'), [doc2]);
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assert.deepEqual(idx.tree.search('bloup'), [doc3]);
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// The nodes contain pointers to the actual documents
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idx.tree.search('bloup')[0].a = 42;
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doc3.a.should.equal(42);
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});
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it('Can insert an array of documents', function () {
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var idx = new Index({ fieldName: 'tf' })
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, doc1 = { a: 5, tf: 'hello' }
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, doc2 = { a: 8, tf: 'world' }
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, doc3 = { a: 2, tf: 'bloup' }
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;
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idx.insert([doc1, doc2, doc3]);
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idx.tree.getNumberOfKeys().should.equal(3);
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assert.deepEqual(idx.tree.search('hello'), [doc1]);
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assert.deepEqual(idx.tree.search('world'), [doc2]);
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assert.deepEqual(idx.tree.search('bloup'), [doc3]);
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});
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}); // ==== End of 'Insertion' ==== //
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describe('Removal', function () {
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it('Can remove pointers from the index, even when multiple documents have the same key', function () {
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var idx = new Index({ fieldName: 'tf' })
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, doc1 = { a: 5, tf: 'hello' }
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, doc2 = { a: 8, tf: 'world' }
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, doc3 = { a: 2, tf: 'bloup' }
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, doc4 = { a: 23, tf: 'world' }
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;
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idx.insert(doc1);
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idx.insert(doc2);
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idx.insert(doc3);
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idx.insert(doc4);
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idx.tree.getNumberOfKeys().should.equal(3);
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idx.remove(doc1);
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idx.tree.getNumberOfKeys().should.equal(2);
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idx.tree.search('hello').length.should.equal(0);
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idx.remove(doc2);
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idx.tree.getNumberOfKeys().should.equal(2);
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idx.tree.search('world').length.should.equal(1);
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idx.tree.search('world')[0].should.equal(doc4);
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});
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it('If we have a sparse index, we remove the doc from the nonindexedDocs array', function () {
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var idx = new Index({ fieldName: 'nope', sparse: true })
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, doc1 = { a: 5, tf: 'hello' }
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, doc2 = { a: 5, tf: 'world' }
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;
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idx.insert(doc1);
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idx.insert(doc2);
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idx.tree.getNumberOfKeys().should.equal(0);
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assert.deepEqual(idx.nonindexedDocs, [doc1, doc2]);
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idx.remove(doc1);
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idx.tree.getNumberOfKeys().should.equal(0);
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assert.deepEqual(idx.nonindexedDocs, [doc2]);
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});
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it('Works with dot notation', function () {
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var idx = new Index({ fieldName: 'tf.nested' })
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, doc1 = { a: 5, tf: { nested: 'hello' } }
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, doc2 = { a: 8, tf: { nested: 'world', additional: true } }
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, doc3 = { a: 2, tf: { nested: 'bloup', age: 42 } }
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, doc4 = { a: 2, tf: { nested: 'world', fruits: ['apple', 'carrot'] } }
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;
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idx.insert(doc1);
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idx.insert(doc2);
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idx.insert(doc3);
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idx.insert(doc4);
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idx.tree.getNumberOfKeys().should.equal(3);
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idx.remove(doc1);
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idx.tree.getNumberOfKeys().should.equal(2);
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idx.tree.search('hello').length.should.equal(0);
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idx.remove(doc2);
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idx.tree.getNumberOfKeys().should.equal(2);
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idx.tree.search('world').length.should.equal(1);
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idx.tree.search('world')[0].should.equal(doc4);
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});
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it('Can remove an array of documents', function () {
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var idx = new Index({ fieldName: 'tf' })
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, doc1 = { a: 5, tf: 'hello' }
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, doc2 = { a: 8, tf: 'world' }
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, doc3 = { a: 2, tf: 'bloup' }
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;
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idx.insert([doc1, doc2, doc3]);
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idx.tree.getNumberOfKeys().should.equal(3);
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idx.remove([doc1, doc3]);
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idx.tree.getNumberOfKeys().should.equal(1);
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assert.deepEqual(idx.tree.search('hello'), []);
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assert.deepEqual(idx.tree.search('world'), [doc2]);
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assert.deepEqual(idx.tree.search('bloup'), []);
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});
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}); // ==== End of 'Removal' ==== //
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describe('Update', function () {
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it('Can update a document whose key did or didnt change', function () {
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var idx = new Index({ fieldName: 'tf' })
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, doc1 = { a: 5, tf: 'hello' }
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, doc2 = { a: 8, tf: 'world' }
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, doc3 = { a: 2, tf: 'bloup' }
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, doc4 = { a: 23, tf: 'world' }
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, doc5 = { a: 1, tf: 'changed' }
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;
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idx.insert(doc1);
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idx.insert(doc2);
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idx.insert(doc3);
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idx.tree.getNumberOfKeys().should.equal(3);
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assert.deepEqual(idx.tree.search('world'), [doc2]);
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idx.update(doc2, doc4);
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idx.tree.getNumberOfKeys().should.equal(3);
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assert.deepEqual(idx.tree.search('world'), [doc4]);
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idx.update(doc1, doc5);
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idx.tree.getNumberOfKeys().should.equal(3);
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assert.deepEqual(idx.tree.search('hello'), []);
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assert.deepEqual(idx.tree.search('changed'), [doc5]);
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});
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}); // ==== End of 'Update' ==== //
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describe('Get matching documents', function () {
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it('Get all documents where fieldName is equal to the given value, or an empty array if no match', function () {
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var idx = new Index({ fieldName: 'tf' })
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, doc1 = { a: 5, tf: 'hello' }
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, doc2 = { a: 8, tf: 'world' }
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, doc3 = { a: 2, tf: 'bloup' }
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, doc4 = { a: 23, tf: 'world' }
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;
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idx.insert(doc1);
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idx.insert(doc2);
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idx.insert(doc3);
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idx.insert(doc4);
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assert.deepEqual(idx.getMatching('bloup'), [doc3]);
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assert.deepEqual(idx.getMatching('world'), [doc2, doc4]);
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assert.deepEqual(idx.getMatching('nope'), []);
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});
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}); // ==== End of 'Get matching documents' ==== //
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});
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