lelopez-io/leetcode-js

Solutions for various LeetCode problems including explanations with plans to later post video walkthroughs. DM me for an invite to my Discord Server where I help participants solve these problems live.

Setting up a test environment for interview questions

I'll be using macOS but most of these tools are available on linux Windows systems may require you use different tools that what I have

Get NVM to manage multiple node version

GitHub - nvm-sh/nvm: Node Version Manager - POSIX-compliant bash script to manage multiple active node.js versions

1. Install

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.2/install.sh | bash

2. Add to profile This is added to whatever shell profile you are using. Usually .bashrc or .zshrc

export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm")"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm

3. Reload profile should only have to load the one you edited

source ~/.zshrc
source ~/.bashrc

4. Verify NVM is installed

nvm -v

Install Node

Now that NVM is installed, this becomes really simple. Unless you need a specific version, you can install the Latest LongTermSupport

1. Install

nvm install --lts

2. Verify install

node -v

which node
which npm

Prepare Project Folder

1. Initialize the folder

npm init -y

2. Install mocha and should

npm install --save-dev mocha should

3. Create the Test File

/* test/test.js */
var should = require("should");

describe("Array", function() {
  describe("#indexOf()", function() {
    it("should return -1 when the value is not present", function() {
      [1, 2, 3].indexOf(5).should.equal(-1);
    });
  });
});