Unable to solve ch-11 > labs-2

htsiah

'use strict'
const assert = require('assert')
const str = 'buffers are neat'
const base64 = Buffer.from(str, 'base64') // convert str to base64

console.log(base64)

assert.equal(base64, Buffer.from([
89,110,86,109,90,109,86,121,99,
121,66,104,99,109,85,103,98,109,
86,104,100,65,61,61]))

console.log('passed!')

nayib

The challenge state is "Convert a String to base64 Encoded String by Using a Buffer". The result for this challenge is "YnVmZmVycyBhcmUgbmVhdA==" given the string "buffers are neat" . Taking this into account there might be a mistake either in the challenge statement or the assertion .

Looking forward to getting an answer from @davidmarkclements

olmryoung

Im stuck on this one too

xwarzdev

Hello, I can confirm this pass with 0 errors. If you want the solution =>

const base64 = Buffer.from(str).toString('base64');

davidmarkclements

@xwarzdev is correct.

SyuheiSaito

Thanks to teacher David, and @xwarzdev.
The string was transfered to base64.

jwandekoken

When i implement this answer that xwardev pointed, i still could not manage it to pass:

"use strict";
const assert = require("assert");
const str = "buffers are neat";

const base64 = Buffer.from(str).toString("base64");
console.log("base64: ", base64);

assert.strictEqual(
  base64,
  Buffer.from([
    89, 110, 86, 109, 90, 109, 86, 121, 99, 121, 66, 104, 99, 109, 85, 103, 98,
    109, 86, 104, 100, 65, 61, 61,
  ])
);

console.log("passed!");

The output I am getting:

base64:  YnVmZmVycyBhcmUgbmVhdA==
node:assert:123
  throw new AssertionError(obj);
  ^

AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
+ actual - expected

+ 'YnVmZmVycyBhcmUgbmVhdA=='
- Buffer(24) [Uint8Array] [
-   89,
-   110,
-   86,
-   109,
-   90,
-   109,
-   86,
-   121,
-   99,
-   121,
-   66,
-   104,
-   99,
-   109,
-   85,
-   103,
-   98,
-   109,
-   86,
-   104,
-   100,
-   65,
-   61,
-   61
- ]
    at Object.<anonymous> (/home/jwandekoken/coding/nodejs_JSNAD-labs/ch-11/labs-2/index.js:8:8)
    at Module._compile (node:internal/modules/cjs/loader:1095:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1124:10)
    at Module.load (node:internal/modules/cjs/loader:975:32)
    at Function.Module._load (node:internal/modules/cjs/loader:816:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:79:12)
    at node:internal/main/run_main_module:17:47 {
  generatedMessage: true,
  code: 'ERR_ASSERTION',
  actual: 'YnVmZmVycyBhcmUgbmVhdA==',
  expected: Buffer(24) [Uint8Array] [
     89, 110,  86, 109,  90, 109,  86,
    121,  99, 121,  66, 104,  99, 109,
     85, 103,  98, 109,  86, 104, 100,
     65,  61,  61
  ],
  operator: 'strictEqual'
}

gregsheppard

@jwandekoken, you're using assert.strictEqual rather than assert.equal, which is what I see in the course code and coerces the buffer to a string (or maybe the other way around?). Try either switching to assert.equal or adding the toString() method to the buffer.

jwandekoken

@gregsheppard said:
@jwandekoken, you're using assert.strictEqual rather than assert.equal, which is what I see in the course code and coerces the buffer to a string (or maybe the other way around?). Try either switching to assert.equal or adding the toString() method to the buffer.

Thanks for the reply, @gregsheppard. It was indeed that. It worked. I am using strictEqual because it says on my editor that assert.equal is being deprecated, heheh.

gregsheppard

Fantastic @jwandekoken! Thanks for helping me clarify the difference between the two assert methods myself. I hadn't properly wrapped my head around it until I looked into this after your post.