01: Node Ecosystem

Submission Instructions

• work in a fork of this repository
• work in a branch on your fork
• write all of your code in a directory named lab- + <your name> e.g. lab-susan
• submit a pull request to this repository
• submit a link to your pull request on canvas
• submit a question, observation, and how long you spent on canvas

Resources

• node assert docs
• mocha docs

Requirements

Configuration

• include the following:
  • README.md - contains documentation about your lab
  • .gitignore - contains a robust .gitignore file
  • .eslintrc - contains the provided .eslintrc file
  • .eslintignore - contains the provided .eslintignore file
  • lib/ - should contain your modules
  • test/ - should contain your unit tests

Feature Tasks

• create a node.js module (greet.js) that exports a single function
  • the greet function should have a single parameter that should expect a string as it's input
  • the greet function should return the input name, concatenated with "hello "
  • the greet function should return null if the input is not a string
• create a node.js module named arithmetic.js
  • this module should have add and sub methods
  • the add method should contain 2 parameters
    • these parameters should be numbers and the method should return the sum of the 2 numbers
  • the sub method should contain 2 parameters
    • these parameters should be numbers and the method should return the first number minus the second number
• decide on the expected behavior for non-number inputs

Testing

• write a test the expects the greet module to return "hello world!"
  • this should happen when invoked with "world!" as a parameter
• write a test for the add and subtract methods on the arithmetic module
  • this should ensure that your functions work with number inputs

Documentation

• write a description of your project (this should be in your README.md file)

BONUS 1pt

• write a test that expects the greet module to return null when you use non string values
• write a test that ensures the functions work as expected with non number inputs

Rubric

• 2pts configuration
• 3pts feature tasks
• 3pts tests
• 2pts documentation