70 lines
1.9 KiB
Go
70 lines
1.9 KiB
Go
// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
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package machine
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import (
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"github.com/stretchr/testify/assert"
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"log"
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"testing"
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)
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func setupStater(initial State) Stater {
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s := New(initial)
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if s == nil {
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log.Fatal("Failed creating new Stater")
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}
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return s
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}
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func TestMachineStater(t *testing.T) {
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s := setupStater("disconnected")
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s.AddStates("disconnected", "start_connection", "connected")
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r := s.GetState("connected")
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if r != "connected" {
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t.Errorf("Failed checking state: %s", r)
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}
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}
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func TestMachineCurrentState(t *testing.T) {
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s := setupStater("disconnected")
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s.AddStates("disconnected", "start_connection", "connected")
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r := s.CurrentState()
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if r != "disconnected" {
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t.Errorf("Failed checking state: %s", r)
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}
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}
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func TestMachineAddTransition(t *testing.T) {
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s := setupStater("disconnected")
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s.AddStates("disconnected", "start_connection", "connected")
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s.AddTransition("connect", "disconnected", "start_connection")
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s.AddModel(setupModel("disconnected"))
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// worker gets a trigger message
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assert.Nil(t, s.Trigger("connect"))
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// machine generates transition event mesages
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if s.CurrentState() != "start_connection" {
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t.Errorf("State transition failed for: connect - %s", s.CurrentState())
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}
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}
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func TestMachineAddSubscription(t *testing.T) {
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x := setupSubscriber()
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s := setupStater("disconnected")
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s.AddStates("disconnected", "start_connection", "connected")
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s.AddTransition("connect", "disconnected", "start_connection")
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assert.Nil(t, s.AddSubscription("connect", x))
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s.AddModel(setupModel("disconnected"))
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s.Trigger("connect")
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exitMessage := <-*x.(*EventChannel)
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enterMessage := <-*x.(*EventChannel)
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if exitMessage.on == EXITSTATEEVENT && exitMessage.source == "disconnected" {
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if enterMessage.on == ENTERSTATEEVENT && enterMessage.dest == "start_connection" {
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return
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}
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}
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t.Errorf("Unexpected event message in state transition notification: exit: %s, enter: %s", exitMessage, enterMessage)
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}
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