Brandon

README.md

@@ -1,52 +1,8 @@
 ![CF](https://camo.githubusercontent.com/70edab54bba80edb7493cad3135e9606781cbb6b/687474703a2f2f692e696d6775722e636f6d2f377635415363382e706e67) 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`
-* Open a pull request to this repository
-* Submit on canvas a question and observation, how long you spent, and a link to your pull request
+## Greet
+  Greet contains a function that accepts the user's name(for example, Brandon) as its only airity and returns the greeting "hello Brandon".  The function will return "null" if the airity is empty or a number.
 
-## Resources  
-* [Jest Getting Started](https://facebook.github.io/jest/docs/en/getting-started.html)
-* [Jest Globals](https://facebook.github.io/jest/docs/en/api.html#content)
-* [Jest Expect](https://facebook.github.io/jest/docs/en/expect.html#content)
-
-## Configuration 
-Configure the root of your repository with the following files and directories. Thoughfully name and organize any aditional configuration or module files.
-* **README.md** - contains documentation
-* **.gitignore** - contains a [robust](http://gitignore.io) `.gitignore` file 
-* **.eslintrc** - contains the course linter configuratoin
-* **.eslintignore** - contains the course linter ignore configuration
-* **lib/** - contains module definitions
-* **__test__/** - contains unit tests
-
-## Feature Tasks
-#### Greet Module
-Create a NodeJS module in the lib/ directory named `greet.js` that exports a single function. 
-* The `greet` function should have a single parameter (arity of one) that should expect a string as it's input
-* The `greet` function should return the input name, concatenated with "hello ": eg. ("hello susan")
-* The `greet` function should return `null` if the input is not a string
-
-#### Arithmetic Module
-Create a NodeJS module in the lib/ directory named `arithmetic.js` that exports an object. This module should have `add` and `sub` methods that implament addition and subtraction.  
-* The `add` method should have an arity of two (define two paramiters)
-  * If either parameter is a non-number the function should return null
-  * Else return the sum of the 2 numbers
-* The `sub` method should have an arity of two (define two paramiters)
-  * If either parameter is a non-number the function should return null
-  * Else return the second paramiter subtracted from the first paramiter
-
-## Testing  
-#### Greet Module Tests
-* Write a test that expects the greet module to return `null` when you supply non string values
-* Write a test the expects the greet module to return `'hello world'`
-  * This should happen when invoked with `'world'` as the first argument
-
-#### Arithmetic Module Tests
-* Test each method for proper use (invoded with number arguments)
-* Test each method for inproper use (invoded with one or more non-numner arguments)
-
-## Documentation  
-In your README.md describe the exported values of each module defined in your lib/ directory. Every function description should include it's airty (expected number of paramiters), the expected data for each paramiter (data-type and limitations), and it's behavior (for both valid and invalued use). Feel free to write any additional information in your README.md.
+## Arithmetic
+  Arithmetic has 2 functions that individually adds and subtracts 2 airities.  If neither input has a number in its airity, then the function will return null.  The tests check for numbers, and for nothing or a letter/word being inputed.  Both of which will return back "null".

lab-brandon/__test__/arithmetic.test.js

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+'use strict'
+const arithmetic = require('../lib/arithmetic');
+
+test('add() should return null', () => {
+	let result = arithmetic.add()
+	expect(result).toEqual(null)
+})
+
+test('sub() should return null', () => {
+	let result = arithmetic.sub()
+	expect(result).toEqual(null)
+})
+
+test('add(\"aayy\") should return null', () => {
+	let result = arithmetic.add("aayy")
+	expect(result).toEqual(null)
+})
+
+test('sub(\"aayy\") should return null', () => {
+	let result = arithmetic.sub("aayy")
+	expect(result).toEqual(null)
+})
+
+test('add(5,5) should return 10', () => {
+	let result = arithmetic.add(5,5)
+	expect(result).toEqual(10)
+})
+
+test('sub(5,1) should return 4', () => {
+	let result = arithmetic.sub(5,1)
+	expect(result).toEqual(4)
+})

lab-brandon/__test__/greet.test.js

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+const greet = require('../lib/greet');
+
+test('greet() should return null', () => {
+	let result = greet()
+	expect(result).toEqual(null)
+})
+
+test('greet(\"world\") should return “hello world”', () => {
+	let result = greet('world')
+	expect(result).toEqual('hello world')
+})
+
+test('greet(5) should return “hello world”', () => {
+	let result = greet(5)
+	expect(result).toEqual(null)
+})

lab-brandon/lib/arithmetic.js

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+'use strict'
+
+module.exports.add = function(a,b){
+  if(typeof a !== "number" || typeof b !== "number")
+    return null
+  return a + b
+}
+
+
+module.exports.sub = function(a,b){
+  if(typeof a !== "number" || typeof b !== "number")
+    return null
+  return a - b
+}

lab-brandon/lib/greet.js

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+'use strict'
+
+module.exports = function(name){
+  if(typeof name !== "string")
+    return null
+  return `hello ${name}`
+}