node_tests_rep2.md

[tansaku@Samuels-MBP:~/tmp ]$ 
→ mkdir node_tests_rep2
[tansaku@Samuels-MBP:~/tmp ]$ 
→ cd node_tests_rep2
[tansaku@Samuels-MBP:~/tmp/node_tests_rep2 ]$ 
→ npm init
This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.

See `npm help json` for definitive documentation on these fields
and exactly what they do.

Use `npm install <pkg> --save` afterwards to install a package and
save it as a dependency in the package.json file.

Press ^C at any time to quit.
name: (node_tests_rep2) 
version: (1.0.0) 
description: 
entry point: (index.js) 
test command: mocha test/**/*.js
git repository: 
keywords: 
author: 
license: (ISC) 
About to write to /Users/tansaku/tmp/node_tests_rep2/package.json:

{
  "name": "node_tests_rep2",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "mocha test/**/*.js"
  },
  "author": "",
  "license": "ISC"
}


Is this ok? (yes) 
[tansaku@Samuels-MBP:~/tmp/node_tests_rep2 ]$ 
→ npm install mocha chai --save-dev
[email protected] /Users/tansaku/tmp/node_tests_rep2
├─┬ [email protected] 
│ ├── [email protected] 
│ ├── [email protected] 
│ ├── [email protected] 
│ ├── [email protected] 
│ ├── [email protected] 
│ └── [email protected] 
└─┬ [email protected] 
  ├── [email protected] 
  ├─┬ [email protected] 
  │ └── [email protected] 
  ├─┬ [email protected] 
  │ └── [email protected] 
  ├── [email protected] 
  ├── [email protected] 
  ├─┬ [email protected] 
  │ ├── [email protected] 
  │ ├─┬ [email protected] 
  │ │ └── [email protected] 
  │ ├── [email protected] 
  │ ├─┬ [email protected] 
  │ │ └─┬ [email protected] 
  │ │   ├── [email protected] 
  │ │   └── [email protected] 
  │ ├── [email protected] 
  │ └── [email protected] 
  ├── [email protected] 
  ├── [email protected] 
  ├─┬ [email protected] 
  │ ├─┬ [email protected] 
  │ │ ├── [email protected] 
  │ │ └─┬ [email protected] 
  │ │   ├── [email protected] 
  │ │   ├── [email protected] 
  │ │   └── [email protected] 
  │ ├── [email protected] 
  │ └── [email protected] 
  ├─┬ [email protected] 
  │ └── [email protected] 
  └─┬ [email protected] 
    └── [email protected] 

npm WARN [email protected] No description
npm WARN [email protected] No repository field.
[tansaku@Samuels-MBP:~/tmp/node_tests_rep2 ]$ 
→ mkdir test lib
[tansaku@Samuels-MBP:~/tmp/node_tests_rep2 ]$ 
→ touch test/test_spec.js
[tansaku@Samuels-MBP:~/tmp/node_tests_rep2 ]$ 
→ touch lib/test.js
[tansaku@Samuels-MBP:~/tmp/node_tests_rep2 ]$ 
→ subl .
[tansaku@Samuels-MBP:~/tmp/node_tests_rep2 ]$ 
→ npm test

> [email protected] test /Users/tansaku/tmp/node_tests_rep2
> mocha test/**/*.js

/Users/tansaku/tmp/node_tests_rep2/test/test_spec.js:4
describe('Athletic reps',()={
                         ^^

ReferenceError: Invalid left-hand side in assignment
    at createScript (vm.js:56:10)
    at Object.runInThisContext (vm.js:97:10)
    at Module._compile (module.js:542:28)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at /Users/tansaku/tmp/node_tests_rep2/node_modules/mocha/lib/mocha.js:230:27
    at Array.forEach (native)
    at Mocha.loadFiles (/Users/tansaku/tmp/node_tests_rep2/node_modules/mocha/lib/mocha.js:227:14)
    at Mocha.run (/Users/tansaku/tmp/node_tests_rep2/node_modules/mocha/lib/mocha.js:513:10)
    at Object.<anonymous> (/Users/tansaku/tmp/node_tests_rep2/node_modules/mocha/bin/_mocha:480:18)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.runMain (module.js:604:10)
    at run (bootstrap_node.js:389:7)
    at startup (bootstrap_node.js:149:9)
    at bootstrap_node.js:504:3
npm ERR! Test failed.  See above for more details.
[tansaku@Samuels-MBP:~/tmp/node_tests_rep2 ]$ 
→ npm test

> [email protected] test /Users/tansaku/tmp/node_tests_rep2
> mocha test/**/*.js



  Athletic reps
    ✓ should get less painful


  1 passing (9ms)

with test file:

const expect = require('chai').expect;
const pain = require('../lib/test');

describe('Athletic reps',()=>{
  it('should get less painful',()=>{
    expect(pain).to.equal('less'); 
  });
});

and app file:

var pain = 'less'

module.exports = pain;