alasql/test/test013.js

AlaSQL.js - JavaScript SQL database library for relational and graph data manipulation with support of localStorage, IndexedDB, and Excel

if(typeof exports === 'object') {
	var assert = require("assert");
	var alasql = require('..');
};

describe('Test 13', function() {
	it('Transactions', function(done){

		var db = new alasql.Database("mydb");

		db.exec("CREATE TABLE students (studentid INT, studentname STRING)");

		for(var i=0;i<1000;i++) {
			db.exec("INSERT INTO students VALUES (2,'Peter Peterson')");
		};
		var res = db.exec('SELECT VALUE COUNT(*) FROM students');		
		assert.equal(1000,res);

		db.transaction(function(tx) {
			for(var i=0;i<1000;i++) {
				tx.exec("INSERT INTO students VALUES (3,'Alemu Abebe')");
			};
//console.log(1);
			var res = tx.exec('SELECT VALUE COUNT(*) FROM students');
			assert.equal(2000,res);

			tx.rollback();

			var res = tx.exec('SELECT VALUE COUNT(*) FROM students');
			assert.equal(1000,res);
			
			done();
		});		

	});
});