alasql/test/test145.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('..');
} else {
	__dirname = '.';
};


// Only for browser
if(typeof exports != 'object') {
describe('Test 145 - localStorage', function() {

	it("1. window object", function(done){
		// For browser only // For node - another
		if(typeof exports === 'object') {
			var res = alasql('SELECT [0], [1] FROM ?', [process.argv]);
		} else {
			var res = alasql('SELECT * FROM ? WHERE [0] = "firstname"', [{firstname:"Bruce", lastname:"Lee"}]);
			var res = alasql('SELECT [0], [1]->textContent FROM ?', [document.getElementsByTagName("body")]);
		}
//		alasql('SELECT window->document->getElementsByTags("body")->0->style->background');
//		alasql("SELECT window->([0])->name FROM ? WHERE window->([0])->name",[window]); 
		done();
	});

	it("2. Simple localStorage interface: localStorage as a function", function(done){
		localStorage['one'] = JSON.stringify([{a:1,b:2},{a:2,b:4}, {a:3,b:6}]);
		localStorage['two'] = 1;
		localStorage['three'] = undefined;

		// Transfer to stdlib
		alasql.fn.localStorage = function(key) {
			return JSON.parse(localStorage[key]);
		};

		var res = alasql('SELECT * FROM ?', [JSON.parse(localStorage['one'])]);
		assert.deepEqual(res,[{a:1,b:2},{a:2,b:4}, {a:3,b:6}]);
		var res = alasql('SELECT a FROM ? WHERE a = localStorage("two")', [JSON.parse(localStorage['one'])]);
		assert.deepEqual(res,[{a:1}]);
		localStorage['three'] = JSON.stringify(res);

		delete alasql.fn.localStorage;

		done();
	});

	it("3. localStorage as a table name with key, value", function(done){
if(false) {
		var lsfn = function(i) {
				if(i >= localStorage.length) return;
				var k = localStorage.key(i);
				var v;
				try {
					v = JSON.parse(localStorage.getItem(k));
				} catch(err){}
				return [k,v];
			};

		alasql.from.LOCALSTORAGE = function () {
			return lsfn;
		};
		var res = alasql('SELECT COLUMN [1] FROM localStorage() WHERE [0] LIKE "one"');
		assert.deepEqual(res,[[{a:1,b:2},{a:2,b:4}, {a:3,b:6}]]);

		var res = alasql('SELECT COLUMN [1] FROM ? WHERE [0] LIKE "one"',[lsfn]);
		assert.deepEqual(res,[[{a:1,b:2},{a:2,b:4}, {a:3,b:6}]]);
}
//		console.log(res);
if(false) {
//console.log(1);
		alasql.into.localStorage = function (r,i) {
			console.log('save to LS',r,i);
			localStorage[r[0]] = JSON.stringify(r[1]);
		};

//		alasql('INSERT INTO localStorage() VALUES ("mytable.1",@[1,2,3]), ("mytable.2",@{a:1,b:2})'); // key=value

		var res = alasql('SELECT * INTO localStorage() FROM ?',[[1,"wind"],[2,"fire"]]);
		console.log(res);
		console.log(localStorage[1],localStorage[2]);
};
		done();
	});
if(false) {

	it("3. localStorage AS a database", function(done){

		// SELECT * FROM localStorage("and")

		alasql('ATTACH DATABASE localStorage');  // Do we really need this?
		alasql('SELECT * INTO localStorage.two FROM localStorage.one');

		alasql('USE localStorage');
		alasql('SHOW TABLES');
		alasql('CREATE TABLE one');

		alasql('BEGIN TRANSACTION');
		alasql('INSERT INTO one VALUES @{a:1,b:10}, @{a:2,b:20}, @{a:1,b:30}, @{a:3, b:40');
		alasql('SELECT * FROM one WHERE a = 1')

		alasql('DELETE FROM one WHERE a = 2');
		alasql('SELECT * FROM one');
		// check localStorage

		alasql('UPDATE one SET b = a*1000 WHERE a = 2');
		alasql('SELECT * FROM one');
		// check localStorage
		alasql('COMMIT TRANSACTION');

		alasql('DROP TABLE one');
		alasql('SHOW TABLES');

		alasql('CREATE TABLE two (a INT PRIMARY KEY, b Object)');
		alasql('INSERT INTO two VALUES @{a:1,b:10}, @{a:2,b:20}, @{a:1,b:30}, @{a:3, b:40');
		alasql('SELECT * FROM two WHERE a = 1');
		alasql('DROP TABLE two');

//;String.fromCharCode(0)

		done();
	});

	it("99. Detach database", function(done){
		alasql('DETACH DATABASE localStorage'); // Do we really need this?
		done();
	});
};
});

}