Chapter 11, Lab 2 Problem

Hi, just getting right to the subject... I have tried to use Buffer.from(str), but after asserting, i notice that the error returned had a completly different number of bytes than the one with which is compared to.
So, i used Buffer.from(asserted_array_of_bytes).toString() and the value of that is YnVmZmVycyBhcmUgbmVhdA==.
My question here is ( because i don't want the answer, i rather find the answer by myself, but a little bit of guidance is welcomed ): Am i doing something wrong, and the assert should work just fine if str is being converted properly ?
Thanks.
Best Answer
-
hey @assist it needs to be a base64 representation of
str
, but what you're creating is is a Buffer ofstr
. So you need to modify your answer so that it's a string containing a base64 ofstr
1
Answers
-
Guys, I am also struggling with this one. Can someone give me a light here?
What i tried so far:
"use strict"; const assert = require("assert"); const str = "buffers are neat"; const buffer = Buffer.from(str); const base64string = buffer.toString("base64"); const base64 = Buffer.from(base64string, "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!");
I've also tried:
"use strict"; const assert = require("assert"); const str = "buffers are neat"; const base64 = Buffer.from(str, "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!");
Unfortunately there's something that I am not getting here... I tried to re-read the material, but i could not find anything to help me. Can someone share a solution? This one seems silly but there's something that I am not getting yet...
0 -
@jwandekoken said:
Guys, I am also struggling with this one. Can someone give me a light here?What i tried so far:
"use strict"; const assert = require("assert"); const str = "buffers are neat"; const buffer = Buffer.from(str); const base64string = buffer.toString("base64"); const base64 = Buffer.from(base64string, "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!");
I've also tried:
"use strict"; const assert = require("assert"); const str = "buffers are neat"; const base64 = Buffer.from(str, "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!");
Unfortunately there's something that I am not getting here... I tried to re-read the material, but i could not find anything to help me. Can someone share a solution? This one seems silly but there's something that I am not getting yet...
@gregsheppard reply on another topic:
"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."
It was indeed that. Thanks
0
Categories
- 9.1K All Categories
- 15 LFX Mentorship
- 68 LFX Mentorship: Linux Kernel
- 382 Linux Foundation Boot Camps
- 234 Cloud Engineer Boot Camp
- 76 Advanced Cloud Engineer Boot Camp
- 30 DevOps Engineer Boot Camp
- 9 Cloud Native Developer Boot Camp
- 983 Training Courses
- 15 LFC110 Class Forum
- 16 LFD102 Class Forum
- 106 LFD103 Class Forum
- 6 LFD121 Class Forum
- 56 LFD201 Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- 19 LFD254 Class Forum
- 450 LFD259 Class Forum
- 90 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 16 LFS200 Class Forum
- 715 LFS201 Class Forum
- LFS201-JP クラス フォーラム
- 283 LFS211 Class Forum
- 51 LFS216 Class Forum
- 27 LFS241 Class Forum
- 28 LFS242 Class Forum
- 19 LFS243 Class Forum
- 6 LFS244 Class Forum
- 12 LFS250 Class Forum
- LFS250-JP クラス フォーラム
- 113 LFS253 Class Forum
- 814 LFS258 Class Forum
- 8 LFS258-JP クラス フォーラム
- 54 LFS260 Class Forum
- 81 LFS261 Class Forum
- 18 LFS262 Class Forum
- 76 LFS263 Class Forum
- 15 LFS264 Class Forum
- 10 LFS266 Class Forum
- 10 LFS267 Class Forum
- 9 LFS268 Class Forum
- 6 LFS269 Class Forum
- 183 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 191 LFW211 Class Forum
- 114 LFW212 Class Forum
- 880 Hardware
- 207 Drivers
- 74 I/O Devices
- 44 Monitors
- 115 Multimedia
- 205 Networking
- 98 Printers & Scanners
- 82 Storage
- 730 Linux Distributions
- 85 Debian
- 64 Fedora
- 12 Linux Mint
- 13 Mageia
- 22 openSUSE
- 127 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 349 Ubuntu
- 450 Linux System Administration
- 33 Cloud Computing
- 64 Command Line/Scripting
- Github systems admin projects
- 89 Linux Security
- 76 Network Management
- 105 System Management
- 45 Web Management
- 51 Mobile Computing
- 19 Android
- 19 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 501 Off Topic
- 121 Introductions
- 193 Small Talk
- 19 Study Material
- 756 Programming and Development
- 243 Kernel Development
- 479 Software Development
- 903 Software
- 247 Applications
- 178 Command Line
- 2 Compiling/Installing
- 73 Games
- 314 Installation
- 26 All In Program
- 26 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)