feat: create customer events

src/domain/event/customer/customer-change-address-event.spec.ts

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+import { EventDispatcher } from '../@shared/event-dispatcher'
+import { CustomerChangeAddressEvent } from './customer-change-address-event'
+import { SendConsoleLogHandler } from './handlers/send-console-log-handler'
+
+describe('Customer change address events tests', () => {
+  it('should register an event handler', () => {
+    const eventDispatcher = new EventDispatcher()
+    const eventHandler = new SendConsoleLogHandler()
+    eventDispatcher.register('CustomerChangeAddressEvent', eventHandler)
+    expect(eventDispatcher.getEventHandlers.CustomerChangeAddressEvent).toBeDefined()
+    expect(eventDispatcher.getEventHandlers.CustomerChangeAddressEvent.length).toBe(1)
+    expect(eventDispatcher.getEventHandlers.CustomerChangeAddressEvent[0]).toMatchObject(eventHandler)
+  })
+
+  it('should notify all event handlers', () => {
+    const eventDispatcher = new EventDispatcher()
+    const eventHandler = new SendConsoleLogHandler()
+    const spyEventHandler = jest.spyOn(eventHandler, 'handler')
+
+    eventDispatcher.register('CustomerChangeAddressEvent', eventHandler)
+    expect(eventDispatcher.getEventHandlers.CustomerChangeAddressEvent[0]).toMatchObject(eventHandler)
+
+    const customerCreatedEvent = new CustomerChangeAddressEvent({
+      id: '123',
+      name: 'John',
+      street: 'Street 1',
+      number: 123,
+      zip: '12345-678',
+      city: 'São Paulo',
+      state: 'SP'
+    })
+
+    eventDispatcher.notify(customerCreatedEvent)
+    expect(spyEventHandler).toHaveBeenCalled()
+  })
+})

src/domain/event/customer/customer-change-address-event.ts

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+import { EventInterface } from '../@shared/event-interface'
+
+export class CustomerChangeAddressEvent implements EventInterface {
+  readonly dataTimeOccurred: Date
+  readonly eventData: any
+
+  constructor (eventData: any) {
+    this.dataTimeOccurred = new Date()
+    this.eventData = eventData
+  }
+}

src/domain/event/customer/customer-created-event.spec.ts

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+import { EventDispatcher } from '../@shared/event-dispatcher'
+import { CustomerCreatedEvent } from './customer-created-event'
+import { SendConsoleLog1Handler } from './handlers/send-console-log1-handler'
+import { SendConsoleLog2Handler } from './handlers/send-console-log2-handler'
+
+describe('Customer created events tests', () => {
+  it('should register an event handler', () => {
+    const eventDispatcher = new EventDispatcher()
+    const eventHandler = new SendConsoleLog1Handler()
+    eventDispatcher.register('CustomerCreatedEvent', eventHandler)
+    expect(eventDispatcher.getEventHandlers.CustomerCreatedEvent).toBeDefined()
+    expect(eventDispatcher.getEventHandlers.CustomerCreatedEvent.length).toBe(1)
+    expect(eventDispatcher.getEventHandlers.CustomerCreatedEvent[0]).toMatchObject(eventHandler)
+  })
+
+  it('should notify all event handlers', () => {
+    const eventDispatcher = new EventDispatcher()
+    const eventHandler1 = new SendConsoleLog1Handler()
+    const eventHandler2 = new SendConsoleLog2Handler()
+
+    const spyEventHandler1 = jest.spyOn(eventHandler1, 'handler')
+    const spyEventHandler2 = jest.spyOn(eventHandler2, 'handler')
+
+    eventDispatcher.register('CustomerCreatedEvent', eventHandler1)
+    eventDispatcher.register('CustomerCreatedEvent', eventHandler2)
+
+    expect(eventDispatcher.getEventHandlers.CustomerCreatedEvent[0]).toMatchObject(eventHandler1)
+    expect(eventDispatcher.getEventHandlers.CustomerCreatedEvent[1]).toMatchObject(eventHandler2)
+
+    const customerCreatedEvent = new CustomerCreatedEvent({
+      name: 'John'
+    })
+
+    eventDispatcher.notify(customerCreatedEvent)
+    expect(spyEventHandler1).toHaveBeenCalled()
+    expect(spyEventHandler2).toHaveBeenCalled()
+  })
+})

src/domain/event/customer/customer-created-event.ts

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+import { EventInterface } from '../@shared/event-interface'
+
+export class CustomerCreatedEvent implements EventInterface {
+  readonly dataTimeOccurred: Date
+  readonly eventData: any
+
+  constructor (eventData: any) {
+    this.dataTimeOccurred = new Date()
+    this.eventData = eventData
+  }
+}

src/domain/event/customer/handlers/send-console-log-handler.ts

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+import { EventHandlerInterface } from '../../@shared/event-handler-interface'
+import { EventInterface } from '../../@shared/event-interface'
+import { CustomerCreatedEvent } from '../customer-created-event'
+
+export class SendConsoleLogHandler implements EventHandlerInterface<CustomerCreatedEvent> {
+  handler (event: EventInterface): void {
+    console.log(`endereço do cliente: ${event.eventData.id as string}, ${event.eventData.name as string} alterado para: ${event.eventData.street as string}, ${event.eventData.number.toString() as string}`)
+  }
+}

src/domain/event/customer/handlers/send-console-log1-handler.ts

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+import { EventHandlerInterface } from '../../@shared/event-handler-interface'
+import { EventInterface } from '../../@shared/event-interface'
+import { CustomerCreatedEvent } from '../customer-created-event'
+
+export class SendConsoleLog1Handler implements EventHandlerInterface<CustomerCreatedEvent> {
+  handler (event: EventInterface): void {
+    console.log('esse é o primeiro console.log do evento: CustomerCreated')
+  }
+}

src/domain/event/customer/handlers/send-console-log2-handler.ts

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+import { EventHandlerInterface } from '../../@shared/event-handler-interface'
+import { EventInterface } from '../../@shared/event-interface'
+import { CustomerCreatedEvent } from '../customer-created-event'
+
+export class SendConsoleLog2Handler implements EventHandlerInterface<CustomerCreatedEvent> {
+  handler (event: EventInterface): void {
+    console.log('esse é o segundo console.log do evento: CustomerCreated')
+  }
+}