test-Chain.js

/* ===== Executable Test ==================================
|  Use this file to pow_test your project.
|  =========================================================*/

const BlockChain = require('./BlockChain.js');
const Block = require('./Block.js');

let myBlockChain = new BlockChain.Blockchain();

// setTimeout(function () {
//     console.log("Waiting...")
// }, 10000);

/******************************************
 ** Function for Create Tests Blocks   ****
 ******************************************/

// (function theLoop(i) {
//     setTimeout(function () {
//         let blockTest = new Block.Block("Test Block - " + (i + 1));
//         // Be careful this only will work if your method 'addBlock' in the Blockchain.js file return a Promise
//         myBlockChain.addBlock(blockTest).then((result) => {
//             console.log(result);
//             i++;
//             if (i < 10) theLoop(i);
//         });
//     }, 1000);
// })(0);

//myBlockChain.addBlock(new Block.Block("1"));
/***********************************************
 ** Function to get the Height of the Chain ****
 ***********************************************/


// Be careful this only will work if `getBlockHeight` method in Blockchain.js file return a Promise
// myBlockChain.getBlockHeight().then((height) => {
//     console.log(height);
// }).catch((err) => {
//     console.log(err);
// });


/***********************************************
 ******** Function to Get a Block  *************
 ***********************************************/


//Be careful this only will work if `getBlock` method in Blockchain.js file return a Promise
// myBlockChain.getBlock(0).then((block) => {
// 	console.log(JSON.stringify(block));
// }).catch((err) => { console.log(err);});


/***********************************************
 ***************** Validate Block  *************
 ***********************************************/


// Be careful this only will work if `validateBlock` method in Blockchain.js file return a Promise
// myBlockChain.validateBlock(8)
// 	.then((valid) => {
// 	console.log(valid);
// })
// .catch((error) => {
// 	console.log(error);
// })


/** Tampering a Block this is only for the purpose of testing the validation methods */

// myBlockChain.getBlock(5).then((block) => {
// 	let blockAux = block;
// 	blockAux.body = "Tampered Block";
// 	myBlockChain._modifyBlock(blockAux.height, blockAux).then((blockModified) => {
// 		if(blockModified){
// 			myBlockChain.validateBlock(blockAux.height).then((valid) => {
// 				console.log(`Block #${blockAux.height}, is valid? = ${valid}`);
// 			})
// 			.catch((error) => {
// 				console.log(error);
// 			})
// 		} else {
// 			console.log("The Block wasn't modified");
// 		}
// 	}).catch((err) => { console.log(err);});
// }).catch((err) => { console.log(err);});
//
// myBlockChain.getBlock(6).then((block) => {
// 	let blockAux = block;
// 	blockAux.previousBlockHash = "jndininuud94j9i3j49dij9ijij39idj9oi";
// 	myBlockChain._modifyBlock(blockAux.height, blockAux).then((blockModified) => {
// 		if(blockModified){
// 			console.log("The Block was modified");
// 		} else {
// 			console.log("The Block wasn't modified");
// 		}
// 	}).catch((err) => { console.log(err);});
// }).catch((err) => { console.log(err);});

/***********************************************
 ***************** Validate Chain  *************
 ***********************************************/


// Be careful this only will work if `validateChain` method in Blockchain.js file return a Promise
myBlockChain.validateChain().then((errorLog) => {
    if (errorLog.length > 0) {
        console.log("The chain is not valid:");
        errorLog.forEach(error => {
            console.log(error);
        });
    } else {
        console.log("No errors found, The chain is Valid!");
    }
}).catch((error) => {
    console.log(error);
});