WIP

task/scheduler_test.go

@@ -0,0 +1,124 @@
+package task
+
+import (
+	"context"
+	"io/ioutil"
+	"log"
+	"os"
+	"sync"
+	"testing"
+
+	"github.com/play-with-docker/play-with-docker/pwd/types"
+	"github.com/play-with-docker/play-with-docker/storage"
+	"github.com/stretchr/testify/assert"
+)
+
+type mockTask struct {
+	name string
+	run  func(ctx context.Context, instance *types.Instance) error
+}
+
+func (m *mockTask) Name() string {
+	return m.name
+}
+func (m *mockTask) Run(ctx context.Context, instance *types.Instance) error {
+	return m.run(ctx, instance)
+}
+
+func mockStorage() storage.StorageApi {
+	tmpfile, err := ioutil.TempFile("", "pwd")
+	if err != nil {
+		log.Fatal(err)
+	}
+	tmpfile.Close()
+	os.Remove(tmpfile.Name())
+	store, _ := storage.NewFileStorage(tmpfile.Name())
+	return store
+}
+
+func TestNew(t *testing.T) {
+	store := mockStorage()
+
+	s := &types.Session{
+		Id: "aaabbbccc",
+		Instances: map[string]*types.Instance{
+			"node1": &types.Instance{
+				Name: "node1",
+				IP:   "10.0.0.1",
+			},
+		},
+	}
+	err := store.SessionPut(s)
+	assert.Nil(t, err)
+
+	sch, err := NewScheduler(store)
+	assert.Nil(t, err)
+	assert.Len(t, sch.scheduledSessions, 1)
+}
+
+func TestAddTask(t *testing.T) {
+	store := mockStorage()
+	sch, err := NewScheduler(store)
+	assert.Nil(t, err)
+
+	task := &mockTask{name: "FooBar"}
+	err = sch.AddTask(task)
+	assert.Nil(t, err)
+
+	err = sch.AddTask(task)
+	assert.NotNil(t, err)
+
+	assert.Equal(t, map[string]Task{"FooBar": task}, sch.tasks)
+}
+
+func TestRemoveTask(t *testing.T) {
+	store := mockStorage()
+	sch, err := NewScheduler(store)
+	assert.Nil(t, err)
+
+	task := &mockTask{name: "FooBar"}
+	err = sch.AddTask(task)
+	assert.Nil(t, err)
+
+	err = sch.RemoveTask(task)
+	assert.Nil(t, err)
+
+	err = sch.RemoveTask(task)
+	assert.NotNil(t, err)
+
+	assert.Equal(t, map[string]Task{}, sch.tasks)
+}
+
+func TestStart(t *testing.T) {
+	store := mockStorage()
+
+	s := &types.Session{
+		Id: "aaabbbccc",
+		Instances: map[string]*types.Instance{
+			"node1": &types.Instance{
+				Name: "node1",
+				IP:   "10.0.0.1",
+			},
+		},
+	}
+	err := store.SessionPut(s)
+	assert.Nil(t, err)
+
+	sch, err := NewScheduler(store)
+	assert.Nil(t, err)
+
+	wg := sync.WaitGroup{}
+	wg.Add(1)
+	ran := false
+	task := &mockTask{name: "FooBar", run: func(ctx context.Context, instance *types.Instance) error {
+		ran = true
+		wg.Done()
+		return nil
+	}}
+	err = sch.AddTask(task)
+	assert.Nil(t, err)
+
+	sch.Start()
+	wg.Wait()
+	assert.True(t, ran)
+}