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|
package agent
import (
"context"
"testing"
"time"
"github.com/docker/swarmkit/agent/exec"
"github.com/docker/swarmkit/api"
"github.com/sirupsen/logrus"
"github.com/stretchr/testify/assert"
)
func init() {
logrus.SetLevel(logrus.DebugLevel)
}
func TestTaskManager(t *testing.T) {
ctx := context.Background()
task := &api.Task{
Status: api.TaskStatus{},
DesiredState: api.TaskStateAccepted,
}
accepted := make(chan struct{})
ready := make(chan struct{})
shutdown := make(chan struct{})
ctlr := &controllerStub{t: t, calls: map[string]int{}}
tm := newTaskManager(ctx, task, ctlr, statusReporterFunc(func(ctx context.Context, taskID string, status *api.TaskStatus) error {
switch status.State {
case api.TaskStateAccepted:
select {
case <-accepted:
default:
close(accepted)
}
case api.TaskStatePreparing:
case api.TaskStateReady:
select {
case <-ready:
default:
close(ready)
}
case api.TaskStateStarting:
case api.TaskStateRunning:
select {
case <-ready:
default:
t.Fatal("should be running before ready")
}
case api.TaskStateCompleted:
select {
case <-shutdown:
default:
close(shutdown)
}
default:
t.Fatalf("unexpected state encountered: %v", status.State)
}
return nil
}))
acceptedWait := accepted
readyWait := ready
shutdownWait := shutdown
for {
select {
case <-acceptedWait:
task.DesiredState = api.TaskStateReady // proceed to ready
assert.NoError(t, tm.Update(ctx, task))
acceptedWait = nil
case <-readyWait:
time.Sleep(time.Second)
task.DesiredState = api.TaskStateRunning // proceed to running.
assert.NoError(t, tm.Update(ctx, task))
readyWait = nil
case <-shutdownWait:
assert.NoError(t, tm.Close())
select {
case <-tm.closed:
default:
t.Fatal("not actually closed")
}
assert.NoError(t, tm.Close()) // hit a second time to make sure it behaves
assert.Equal(t, tm.Update(ctx, task), ErrClosed)
assert.Equal(t, map[string]int{
"start": 1,
"wait": 1,
"prepare": 1,
"update": 2}, ctlr.calls)
return
case <-ctx.Done():
t.Fatal(ctx.Err())
}
}
}
type controllerStub struct {
t *testing.T
exec.Controller
calls map[string]int
}
func (cs *controllerStub) Prepare(ctx context.Context) error {
cs.calls["prepare"]++
cs.t.Log("(*controllerStub).Prepare")
return nil
}
func (cs *controllerStub) Start(ctx context.Context) error {
cs.calls["start"]++
cs.t.Log("(*controllerStub).Start")
return nil
}
func (cs *controllerStub) Wait(ctx context.Context) error {
cs.calls["wait"]++
cs.t.Log("(*controllerStub).Wait")
return nil
}
func (cs *controllerStub) Update(ctx context.Context, task *api.Task) error {
cs.calls["update"]++
cs.t.Log("(*controllerStub).Update")
return nil
}
func (cs *controllerStub) Remove(ctx context.Context) error {
cs.calls["remove"]++
cs.t.Log("(*controllerStub).Remove")
return nil
}
func (cs *controllerStub) Close() error {
cs.calls["close"]++
cs.t.Log("(*controllerStub).Close")
return nil
}
|
