fix lint errors

machine.go

@@ -25,7 +25,7 @@ type Definition struct {
 }
 
 func New(initial State) Stater {
-  return &Definition{ model: NewModel(initial), triggers: make(map[string]Transitioner) }
+	return &Definition{model: NewModel(initial), triggers: make(map[string]Transitioner)}
 }
 
 func (d *Definition) AddStates(name ...State) {
@@ -38,7 +38,7 @@ func (d *Definition) AddTransition(trigger string, source State, dest State) {
 
 func (d *Definition) GetState(name string) State {
 	var r State
-  for _,s := range(d.states) {
+	for _, s := range d.states {
 		if string(s) == name {
 			return s
 		}
@@ -59,7 +59,7 @@ func (d *Definition) CurrentState() State {
 }
 
 func (d *Definition) AddSubscription(transition string, subscription Subscriber) error {
-  if t,ok := d.triggers[transition]; ok {
+	if t, ok := d.triggers[transition]; ok {
 		t.Subscribe(subscription)
 		return nil
 	}

machine_test.go

@@ -2,10 +2,10 @@
 
 package machine
 
-import(
+import (
+	"github.com/stretchr/testify/assert"
 	"log"
 	"testing"
-	"github.com/stretchr/testify/assert"
 )
 
 func setupStater(initial State) Stater {
@@ -58,8 +58,8 @@ func TestMachineAddSubscription(t *testing.T) {
 	assert.Nil(t, s.AddSubscription("connect", x))
 	s.AddModel(setupModel("disconnected"))
 	s.Trigger("connect")
-  exitMessage := <- *x.(*EventChannel)
+	exitMessage := <-*x.(*EventChannel)
-  enterMessage := <- *x.(*EventChannel)
+	enterMessage := <-*x.(*EventChannel)
 	if exitMessage.on == EXITSTATEEVENT && exitMessage.source == "disconnected" {
 		if enterMessage.on == ENTERSTATEEVENT && enterMessage.dest == "start_connection" {
 			return

model.go

@@ -13,7 +13,7 @@ type Model struct {
 }
 
 func NewModel(initial State) Modeler {
-  return &Model{ state: initial }
+	return &Model{state: initial}
 }
 
 func (m *Model) Trigger(transition Transitioner) error {

state.go

@@ -7,6 +7,5 @@ type mState struct {
 }
 
 func NewState(name string) *mState {
-  return &mState{ name: name }
+	return &mState{name: name}
 }
-

transition.go

@@ -3,8 +3,8 @@
 package machine
 
 import (
+	_ "errors"
 	"fmt"
-  "errors"
 )
 
 type Transitioner interface {
@@ -20,7 +20,7 @@ type Transition struct {
 }
 
 func NewTransition(trigger string, source State, dest State) Transitioner {
-  return &Transition{ trigger: trigger, source: source, dest: dest }
+	return &Transition{trigger: trigger, source: source, dest: dest}
 }
 
 func (r *Transition) Run(m Modeler) error {
@@ -33,7 +33,7 @@ func (r *Transition) Run(m Modeler) error {
 			return nil
 		}
 	}
-  return errors.New(fmt.Sprintf("Transition from %s to %s failed on model state %s", r.source, r.dest, currentState))
+	return fmt.Errorf("Transition from %s to %s failed on model state %s", r.source, r.dest, currentState)
 }
 
 func (r *Transition) Subscribe(s Subscriber) {
@@ -41,7 +41,7 @@ func (r *Transition) Subscribe(s Subscriber) {
 }
 
 func (r *Transition) Notify(on Eventtype, source State, dest State) {
-  for _,s := range r.subscriptions {
+	for _, s := range r.subscriptions {
-    s.Notify(&EventMessage{ on: on, source: source, dest: dest})
+		s.Notify(&EventMessage{on: on, source: source, dest: dest})
 	}
 }

transition_test.go

@@ -3,9 +3,9 @@
 package machine
 
 import (
+	"github.com/stretchr/testify/assert"
 	"log"
 	"testing"
-	"github.com/stretchr/testify/assert"
 )
 
 func setupTransition() Transitioner {
@@ -44,8 +44,8 @@ func TestTransitionSubscribe(t *testing.T) {
 	s.Subscribe(c)
 	m := setupModel("closed")
 	assert.Nil(t, s.Run(m))
-  exitEvent := <- *c.(*EventChannel)
+	exitEvent := <-*c.(*EventChannel)
-  enterEvent := <- *c.(*EventChannel)
+	enterEvent := <-*c.(*EventChannel)
 	if exitEvent.on != EXITSTATEEVENT {
 		t.Errorf("Invalid exit event")
 	}