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events.test.ts
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321 lines (264 loc) · 8.28 KB
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import assert from 'assert'
import { EventEmitter } from 'events'
import { feathers } from '../src'
describe('Service events', () => {
it('app is an event emitter', (done) => {
const app = feathers()
assert.strictEqual(typeof app.on, 'function')
app.on('test', (data: any) => {
assert.deepStrictEqual(data, { message: 'app' })
done()
})
app.emit('test', { message: 'app' })
})
it('works with service that is already an EventEmitter', (done) => {
const app = feathers()
const service: any = new EventEmitter()
service.create = async function (data: any) {
return data
}
service.on('created', (data: any) => {
assert.deepStrictEqual(data, {
message: 'testing'
})
done()
})
app.use('/emitter', service)
app.service('emitter').create({
message: 'testing'
})
})
describe('emits event data on a service', () => {
it('.create and created', (done) => {
const app = feathers().use('/creator', {
async create(data: any) {
return data
}
})
const service = app.service('creator')
service.on('created', (data: any) => {
assert.deepStrictEqual(data, { message: 'Hello' })
done()
})
service.create({ message: 'Hello' })
})
it('allows to skip event emitting', (done) => {
const app = feathers().use('/creator', {
async create(data: any) {
return data
}
})
const service = app.service('creator')
service.hooks({
before: {
create(context: any) {
context.event = null
return context
}
}
})
service.on('created', () => {
done(new Error('Should never get here'))
})
service.create({ message: 'Hello' }).then(() => done())
})
it('.update and updated', (done) => {
const app = feathers().use('/creator', {
async update(id: any, data: any) {
return Object.assign({ id }, data)
}
})
const service = app.service('creator')
service.on('updated', (data: any) => {
assert.deepStrictEqual(data, { id: 10, message: 'Hello' })
done()
})
service.update(10, { message: 'Hello' })
})
it('.patch and patched', (done) => {
const app = feathers().use('/creator', {
async patch(id: any, data: any) {
return Object.assign({ id }, data)
}
})
const service = app.service('creator')
service.on('patched', (data: any) => {
assert.deepStrictEqual(data, { id: 12, message: 'Hello' })
done()
})
service.patch(12, { message: 'Hello' })
})
it('.remove and removed', (done) => {
const app = feathers().use('/creator', {
async remove(id: any) {
return { id }
}
})
const service = app.service('creator')
service.on('removed', (data: any) => {
assert.deepStrictEqual(data, { id: 22 })
done()
})
service.remove(22)
})
})
describe('emits event data arrays on a service', () => {
it('.create and created with array', async () => {
const app = feathers().use('/creator', {
async create(data: any) {
if (Array.isArray(data)) {
return Promise.all(data.map((current) => (this as any).create(current)))
}
return data
}
})
const service = app.service('creator')
const createItems = [{ message: 'Hello 0' }, { message: 'Hello 1' }]
const events = Promise.all(
createItems.map((element, index) => {
return new Promise<void>((resolve) => {
service.on('created', (data: any) => {
if (data.message === element.message) {
assert.deepStrictEqual(data, { message: `Hello ${index}` })
resolve()
}
})
})
})
)
await service.create(createItems)
await events
})
it('.update and updated with array', async () => {
const app = feathers().use('/creator', {
async update(id: any, data: any) {
if (Array.isArray(data)) {
return Promise.all(data.map((current, index) => (this as any).update(index, current)))
}
return Object.assign({ id }, data)
}
})
const service = app.service('creator')
const updateItems = [{ message: 'Hello 0' }, { message: 'Hello 1' }]
const events = Promise.all(
updateItems.map((element, index) => {
return new Promise<void>((resolve) => {
service.on('updated', (data: any) => {
if (data.message === element.message) {
assert.deepStrictEqual(data, {
id: index,
message: `Hello ${index}`
})
resolve()
}
})
})
})
)
await service.update(null, updateItems)
await events
})
it('.patch and patched with array', async () => {
const app = feathers().use('/creator', {
async patch(id: any, data: any) {
if (Array.isArray(data)) {
return Promise.all(data.map((current, index) => (this as any).patch(index, current)))
}
return Object.assign({ id }, data)
}
})
const service = app.service('creator')
const patchItems = [{ message: 'Hello 0' }, { message: 'Hello 1' }]
const events = Promise.all(
patchItems.map((element, index) => {
return new Promise<void>((resolve) => {
service.on('patched', (data: any) => {
if (data.message === element.message) {
assert.deepStrictEqual(data, {
id: index,
message: `Hello ${index}`
})
resolve()
}
})
})
})
)
await service.patch(null, patchItems)
await events
})
it('.remove and removed with array', async () => {
const removeItems = [{ message: 'Hello 0' }, { message: 'Hello 1' }]
const app = feathers().use('/creator', {
async remove(id: any, data: any) {
if (id === null) {
return Promise.all(removeItems.map((current, index) => (this as any).remove(index, current)))
}
return Object.assign({ id }, data)
}
})
const service = app.service('creator')
const events = Promise.all(
removeItems.map((element, index) => {
return new Promise<void>((resolve) => {
service.on('removed', (data: any) => {
if (data.message === element.message) {
assert.deepStrictEqual(data, {
id: index,
message: `Hello ${index}`
})
resolve()
}
})
})
})
)
await service.remove(null)
await events
})
})
describe('event format', () => {
it('also emits the actual hook object', (done) => {
const app = feathers().use('/creator', {
async create(data: any) {
return data
}
})
const service = app.service('creator')
service.hooks({
after(hook: any) {
hook.changed = true
}
})
service.on('created', (data: any, hook: any) => {
try {
assert.deepStrictEqual(data, { message: 'Hi' })
assert.ok(hook.changed)
assert.strictEqual(hook.service, service)
assert.strictEqual(hook.method, 'create')
assert.strictEqual(hook.type, 'around')
done()
} catch (error: any) {
done(error)
}
})
service.create({ message: 'Hi' })
})
it('events indicated by the service are not sent automatically', (done) => {
class Creator {
events = ['created']
async create(data: any) {
return data
}
}
const app = feathers().use('/creator', new Creator())
const service = app.service('creator')
service.on('created', (data: any) => {
assert.deepStrictEqual(data, { message: 'custom event' })
done()
})
service.create({ message: 'hello' })
service.emit('created', { message: 'custom event' })
})
})
})