Update the vendor folder (#53)

* Update the vendor folder

* Update the Gopkg.lock by running dep ensure

vendor/github.com/opencontainers/runc/libcontainer/state_linux_test.go

@@ -0,0 +1,79 @@
+// +build linux
+
+package libcontainer
+
+import "testing"
+
+func TestStateStatus(t *testing.T) {
+	states := map[containerState]Status{
+		&stoppedState{}:  Destroyed,
+		&runningState{}:  Running,
+		&restoredState{}: Running,
+		&pausedState{}:   Paused,
+	}
+	for s, status := range states {
+		if s.status() != status {
+			t.Fatalf("state returned %s but expected %s", s.status(), status)
+		}
+	}
+}
+
+func isStateTransitionError(err error) bool {
+	_, ok := err.(*stateTransitionError)
+	return ok
+}
+
+func TestStoppedStateTransition(t *testing.T) {
+	s := &stoppedState{c: &linuxContainer{}}
+	valid := []containerState{
+		&stoppedState{},
+		&runningState{},
+		&restoredState{},
+	}
+	for _, v := range valid {
+		if err := s.transition(v); err != nil {
+			t.Fatal(err)
+		}
+	}
+	err := s.transition(&pausedState{})
+	if err == nil {
+		t.Fatal("transition to paused state should fail")
+	}
+	if !isStateTransitionError(err) {
+		t.Fatal("expected stateTransitionError")
+	}
+}
+
+func TestPausedStateTransition(t *testing.T) {
+	s := &pausedState{c: &linuxContainer{}}
+	valid := []containerState{
+		&pausedState{},
+		&runningState{},
+		&stoppedState{},
+	}
+	for _, v := range valid {
+		if err := s.transition(v); err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func TestRestoredStateTransition(t *testing.T) {
+	s := &restoredState{c: &linuxContainer{}}
+	valid := []containerState{
+		&stoppedState{},
+		&runningState{},
+	}
+	for _, v := range valid {
+		if err := s.transition(v); err != nil {
+			t.Fatal(err)
+		}
+	}
+	err := s.transition(&createdState{})
+	if err == nil {
+		t.Fatal("transition to created state should fail")
+	}
+	if !isStateTransitionError(err) {
+		t.Fatal("expected stateTransitionError")
+	}
+}