Tests is not working

[lays147]

I'm using this project at a KDE Neon(Ubuntu based) and even with the files with the expected answer, the tests aren't working.

`# Separation of Concerns 3 (Exercise 4 of 8)

✓ should not have a function called increaseBalance()
✓ should not have a function called getBalance()
✓ should not have a function called canAfford()
✓ should not have a function called decreaseBalance()
✓ should not have a function called getAmount()
✓ should not have a function called insertCoin()
✓ should not have a function called releaseChange()

1. should have a function called getProducts()
2. should have a function called getProduct()
   ✓ should not have a function called isValidAmount()

8 passing (10ms)
2 failing

1. should have a function called getProducts():

   AssertionError: expected 'undefined' to equal 'function'

   • expected - actual

   -undefined
   +function

   at Context. (/usr/local/lib/node_modules/js-best-practices/exercises/decompose_productinventory/exercise.js:39:53)

2. should have a function called getProduct():

   AssertionError: expected 'undefined' to equal 'function'

   • expected - actual

   -undefined
   +function

   at Context. (/usr/local/lib/node_modules/js-best-practices/exercises/decompose_productinventory/exercise.js:43:52)
   `

And productInventory.js
`var products = [
{
name: 'Skittles',
price: 85,
id: 'A1'
}
];

module.exports = {
getProducts: function() {
return products;
},

getProduct: function(productId) {
var product = products.find(function(p) { return p.id === productId; });
return product;
}
};`

So I think that should work. I had similar issues at Exercise 1 and 2.