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function orderTotal(fetch, order) {
fetch('https://vatapi.com/v1/country-code-check?code=' + order.country)
return Promise.resolve(order.items.reduce((prev, cur) =>
cur.price * (cur.quantity || 1) + prev, 0))
}
module.exports = orderTotal
const orderTotal = require('./order-total')
const emptyFunction = () => {}
it('calls vatapi.com correctly', () => {
let isFakeFetchCalled = false
const fakeFetch = (url) => {
expect(url).toBe('https://vatapi.com/v1/country-code-check?code=DE')
isFakeFetchCalled = true
}
orderTotal(fakeFetch, {
country: 'DE',
items: [
{ 'name': 'Dragon waffles', price: 20, quantity: 2 }
]
}).then(result => {
expect(isFakeFetchCalled).toBe(true)
})
})
it('if country code specified')
it('Quantity', () =>
orderTotal(emptyFunction, {
items: [
{ 'name': 'Dragon candy', price: 2, quantity: 3 }
]
}).then(result => expect(result).toBe(6)))
it('No quantity specified', () =>
orderTotal(emptyFunction, {
items: [
{ 'name': 'Dragon candy', price: 3 }
]
}).then(result => expect(result).toBe(3)))
it('Happy path (Example 1)', () =>
orderTotal(emptyFunction,{
items: [
{ name: 'Dragon food', price: 8, quantity: 1 },
{ name: 'Dragon cage (small)', price: 800, quantity: 1 }
]
}).then(result => expect(result).toBe(808)))
it('Happy path (Example 2)', () =>
orderTotal(emptyFunction, {
items: [
{ name: 'Dragon collar', price: 20, quantity: 1 },
{ name: 'Dragon chew toy', price: 40, quantity: 1 }
]
}).then(result => expect(result).toBe(60)))
{
"name": "test-runners",
"version": "1.0.0",
"description": "",
"main": "code-and-tests.js",
"scripts": {
"test": "jest",
"watch": "jest --watch *.js"
},
"author": "",
"license": "ISC",
"devDependencies": {
"jest": "^21.2.1"
}
}
const fetch = require('node-fetch')
const result =
fetch('https://vatapi.com/v1/country-code-check?code=DE', {
headers: {
'apikey': process.env.VAT_API_KEY
}
})
.then(response => response.json())
.then(data => data.rates.standard.value)
result
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