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CoffeeSpec.scala
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CoffeeSpec.scala
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package me.rerun.akka.fsm
import akka.actor.FSM.{CurrentState, SubscribeTransitionCallBack, Transition}
import akka.actor.{ActorSystem, Props}
import akka.testkit.{ImplicitSender, TestActorRef, TestKit}
import me.rerun.akka.fsm.CoffeeMachine._
import me.rerun.akka.fsm.CoffeeProtocol._
import org.scalatest.{MustMatchers, FunSpecLike}
/**
* Created by Arun on 12/25/15.
*/
class CoffeeSpec extends TestKit(ActorSystem("coffee-system")) with MustMatchers with FunSpecLike with ImplicitSender {
describe("The Coffee Machine") {
it("should allow setting and getting of price of coffee") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(7)
coffeeMachine ! GetCostOfCoffee
expectMsg(7)
}
it("should allow setting and getting of maximum number of coffees") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetNumberOfCoffee(10)
coffeeMachine ! GetNumberOfCoffee
expectMsg(10)
}
it("should stay at Transacting when the Deposit is less then the price of the coffee") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(5)
coffeeMachine ! SetNumberOfCoffee(10)
coffeeMachine ! SubscribeTransitionCallBack(testActor)
expectMsg(CurrentState(coffeeMachine, Open))
coffeeMachine ! Deposit(2)
coffeeMachine ! GetNumberOfCoffee
expectMsg(10)
}
it("should transition to ReadyToBuy and then Open when the Deposit is equal to the price of the coffee") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(5)
coffeeMachine ! SetNumberOfCoffee(10)
coffeeMachine ! SubscribeTransitionCallBack(testActor)
expectMsg(CurrentState(coffeeMachine, Open))
coffeeMachine ! Deposit(5)
expectMsg(Transition(coffeeMachine, Open, ReadyToBuy))
coffeeMachine ! BrewCoffee
expectMsg(Transition(coffeeMachine, ReadyToBuy, Open))
coffeeMachine ! GetNumberOfCoffee
expectMsg(9)
}
it("should transition to ReadyToBuy and then Open when the Deposit is greater than the price of the coffee") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(5)
coffeeMachine ! SetNumberOfCoffee(10)
coffeeMachine ! SubscribeTransitionCallBack(testActor)
expectMsg(CurrentState(coffeeMachine, Open))
coffeeMachine ! Deposit(2)
coffeeMachine ! Deposit(2)
coffeeMachine ! Deposit(2)
expectMsg(Transition(coffeeMachine, Open, ReadyToBuy))
coffeeMachine ! BrewCoffee
expectMsgPF(){
case Balance(value)=>value==1
}
expectMsg(Transition(coffeeMachine, ReadyToBuy, Open))
coffeeMachine ! GetNumberOfCoffee
expectMsg(9)
}
it("should transition to Open after flushing out all the deposit when the coffee is canceled") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(5)
coffeeMachine ! SetNumberOfCoffee(10)
coffeeMachine ! SubscribeTransitionCallBack(testActor)
expectMsg(CurrentState(coffeeMachine, Open))
coffeeMachine ! Deposit(2)
coffeeMachine ! Deposit(2)
coffeeMachine ! Deposit(2)
expectMsg(Transition(coffeeMachine, Open, ReadyToBuy))
coffeeMachine ! Cancel
expectMsgPF(){
case Balance(value)=>value==6
}
expectMsg(Transition(coffeeMachine, ReadyToBuy, Open))
coffeeMachine ! GetNumberOfCoffee
expectMsg(10)
}
it("should transition to PoweredOff state if the machine is shut down from ReadyToBuyState") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(5)
coffeeMachine ! SetNumberOfCoffee(10)
coffeeMachine ! SubscribeTransitionCallBack(testActor)
expectMsg(CurrentState(coffeeMachine, Open))
coffeeMachine ! Deposit(2)
coffeeMachine ! Deposit(2)
coffeeMachine ! Deposit(2)
expectMsg(Transition(coffeeMachine, Open, ReadyToBuy))
coffeeMachine ! ShutDownMachine
expectMsgPF(){
case Balance(value)=>value==6
}
expectMsg(Transition(coffeeMachine, ReadyToBuy, PoweredOff))
coffeeMachine ! GetNumberOfCoffee
expectMsg(MachineError("Machine Powered down. Please start machine first with StartUpMachine"))
}
it("should transition to PoweredOff state if the machine is shut down from Open State") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(5)
coffeeMachine ! SetNumberOfCoffee(10)
coffeeMachine ! SubscribeTransitionCallBack(testActor)
expectMsg(CurrentState(coffeeMachine, Open))
coffeeMachine ! Deposit(2)
coffeeMachine ! Deposit(2)
coffeeMachine ! ShutDownMachine
expectMsgPF(){
case Balance(value)=>value==4
}
expectMsg(Transition(coffeeMachine, Open, PoweredOff))
coffeeMachine ! GetNumberOfCoffee
expectMsg(MachineError("Machine Powered down. Please start machine first with StartUpMachine"))
}
it("should open the machine to operation if powered on") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(5)
coffeeMachine ! SetNumberOfCoffee(10)
coffeeMachine ! SubscribeTransitionCallBack(testActor)
expectMsg(CurrentState(coffeeMachine, Open))
coffeeMachine ! Deposit(2)
coffeeMachine ! Deposit(2)
coffeeMachine ! ShutDownMachine
expectMsgPF(){
case Balance(value)=>value==4
}
expectMsg(Transition(coffeeMachine, Open, PoweredOff))
coffeeMachine ! GetNumberOfCoffee
expectMsg(MachineError("Machine Powered down. Please start machine first with StartUpMachine"))
coffeeMachine ! BrewCoffee
expectMsg(MachineError("Machine Powered down. Please start machine first with StartUpMachine"))
coffeeMachine ! StartUpMachine
expectMsg(Transition(coffeeMachine, PoweredOff,Open))
}
it("should power down if there is no coffee in the first place") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(5)
coffeeMachine ! SetNumberOfCoffee(0)
coffeeMachine ! GetNumberOfCoffee
expectMsg(MachineError("No more coffee"))
}
it("should power down if there is no coffee left.") {
val coffeeMachine = TestActorRef(Props(new CoffeeMachine()))
coffeeMachine ! SetCostOfCoffee(5)
coffeeMachine ! SetNumberOfCoffee(5)
(1 to 5).foreach{count=>
println (count)
coffeeMachine ! Deposit(5)
coffeeMachine ! BrewCoffee
}
coffeeMachine ! GetNumberOfCoffee
expectMsg(MachineError("No more coffee"))
}
}
}