igo/test/db/SqlTest.js

Igo is a Node.js Web Framework based on Express

var assert    = require('assert');
var _         = require('lodash');

var Sql     = require('../../src/db/Sql');

describe('db.Sql', function() {

  var query = {
    table: 'books',
    where: []
  };

  //
  describe('selectSQL', function() {

    it('should return correct SQL', function() {
      var selectSQL = new Sql(query).selectSQL();
      assert.equal('SELECT `books`.* FROM `books`', selectSQL.sql);
      assert.equal(0, selectSQL.params.length);
    });

    it('should allow order by', function() {
      query.order = [ '`title`' ];
      var selectSQL = new Sql(query).selectSQL();
      assert.equal('SELECT `books`.* FROM `books` ORDER BY `title`', selectSQL.sql);
      assert.equal(0, selectSQL.params.length);
      delete query.order;
    });

    it('should allow limit', function() {
      query.limit = 3;
      var selectSQL = new Sql(query).selectSQL();
      assert.equal('SELECT `books`.* FROM `books` LIMIT ?, ?', selectSQL.sql);
      assert.equal(2, selectSQL.params.length);
      assert.equal(0, selectSQL.params[0]);
      assert.equal(3, selectSQL.params[1]);
    });

    it('should allow distinct', function() {
      query.distinct  = [ 'type' ];
      query.limit     = null;
      var selectSQL   = new Sql(query).selectSQL();
      assert.equal('SELECT DISTINCT `type` FROM `books`', selectSQL.sql);
      assert.equal(0, selectSQL.params.length);
    })
  });

  //
  describe('countSQL', function() {
    it('should return correct SQL', function() {
      var selectSQL = new Sql(query).countSQL();
      assert.equal('SELECT COUNT(0) as `count` FROM `books`', selectSQL.sql);
    });
  });

  //
  describe('whereSQL', function() {

    it('should allow string as query param', function() {
      var params  = [];
      query.where = [[ 'field like ?', '%soon%' ]];
      var sql     = new Sql(query).whereSQL(params);
      assert.equal('WHERE field like ? ', sql);
      assert.equal('%soon%', params[0]);
    });

    it('should allow integer as query param', function() {
      var params  = [];
      query.where = [[ 'id=?', 12 ]];
      var sql     = new Sql(query).whereSQL(params);
      assert.equal('WHERE id=? ', sql);
      assert.equal(12, params[0]);
    });

    it('should allow array as query param', function() {
      var params  = [];
      query.where = [[ 'field like ?', ['%soon%'] ]];
      var sql     = new Sql(query).whereSQL(params);
      assert.equal('WHERE field like ? ', sql);
      assert.equal('%soon%', params[0]);
    });

    it('should allow object as criterion', function() {
      var params  = [];
      query.where = [{ id: 123 }];
      var sql     = new Sql(query).whereSQL(params);
      assert.equal('WHERE `id`=? ', sql);
      assert.equal(123, params[0]);
    });
  });
});