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middleware.test.ts
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middleware.test.ts
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import { equal, deepEqual } from 'assert'
import { chainOfResponsibility } from './chain-of-responsibility'
import { getSweetsSentence } from './sweets'
import { fetchPerson } from './promises'
describe('middleware', function () {
describe('chain of responsibility', function () {
it('Bob asks for £1335', function () {
deepEqual(
chainOfResponsibility({ name: 'Bob', ones: 1335 }),
{
name: 'Bob',
hasEnoughMoney: 'No',
ones: 5,
tens: 1,
twenties: 1,
hundreds: 13
}
)
})
it('Mary asks for £13.50', function () {
deepEqual(
chainOfResponsibility({ name: 'Mary', ones: 13.50 }),
{
name: 'Mary',
hasEnoughMoney: 'Yes!',
ones: 3.5,
tens: 1,
twenties: 0,
hundreds: 0
}
)
})
})
describe('sweets', function () {
it('should have eaten a lot of sweets', function () {
equal(
getSweetsSentence('Barney'),
'Barney ate 20 sweets and enjoyed it.'
)
})
})
describe('promises', function () {
it('should successfully fetch helen', function () {
return fetchPerson({ data: { id: 'helen' } })
.then((res) => {
equal(res.data!.name, 'Helen')
equal(res.data!.age, 20)
})
})
it('should fail with bob', function () {
return fetchPerson({ data: { id: 'bob' } })
.then(() => {
throw new Error('should not run')
})
.catch((err) => {
equal(err.message, 'Must be an adult')
})
})
})
})