alasql/test/test141.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 = '.';
};

describe('Test 141 text as source', function() {

	var myfn = function(i) {
		if(i>3) return;
		return {a:i, b:i*i};
	};
//	myfn.dontcache = true;

	var myfn2 = function(i) {
		if(i>3) return;
		return {a:i, b:i*i};
	};
	myfn2.dontcache = true;

	var myfn3 = function(i) {
		if(i>3) return;
		return {a:i, c:2*i};
	};
//	myfn3.dontcache = true;

	it("1. Create database", function(done){
		alasql('CREATE DATABASE test141; use test141');
		done();
	});

	it("2. On string", function(done){

		var txt = "one\ntwo\nthree\nfour\nfive\nsix\r\nseven\neight\r\nnine\nten";
		var days = alasql('select column _ from ? where len(_) <= 3',[txt]);
		assert.deepEqual(days, ['one','two','six','ten']);

		var res = alasql('select * from ?',[myfn]);
		assert.deepEqual(res, [ { a: 0, b: 0 }, { a: 1, b: 1 }, { a: 2, b: 4 }, { a: 3, b: 9 }]);
		done();
	});
	it("2. SELECT on function", function(done){


		var res = alasql('select * from ?',[myfn2]);
		assert.deepEqual(res, [ { a: 0, b: 0 }, { a: 1, b: 1 }, { a: 2, b: 4 }, { a: 3, b: 9 }]);
		done();
	});
	it("3. INNER JOIN on stream", function(done){


//		myfn3.dontcache = true;

		var res = alasql('select a, b, t.c from ? inner join ? t using a',[myfn,myfn3]);
		assert.deepEqual(res, [ { a: 0, b:0, c: 0 }, { a: 1, b:1, c: 2 }, 
			{ a: 2, b:4, c: 4 }, { a: 3, b:9, c: 6 }]);
//		console.log(res);
		done();
	});



	it("3. INNER JOIN on stream", function(done){


		var res = alasql('select a, b, t.c from ? right join ? t using a',[myfn,myfn3]);
		assert.deepEqual(res, [ { a: 0, b:0, c: 0 }, { a: 1, b:1, c: 2 }, 
			{ a: 2, b:4, c: 4 }, { a: 3, b:9, c: 6 }]);

		done();
	});




	it("99. Drop database", function(done){
		alasql('DROP DATABASE test141');
		done();
	});
});