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// +build linux
package libcontainer
import (
"reflect"
"testing"
)
var states = map[containerState]Status{
&createdState{}: Created,
&runningState{}: Running,
&restoredState{}: Running,
&pausedState{}: Paused,
&stoppedState{}: Stopped,
&loadedState{s: Running}: Running,
}
func TestStateStatus(t *testing.T) {
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 testTransitions(t *testing.T, initialState containerState, valid []containerState) {
validMap := map[reflect.Type]interface{}{}
for _, validState := range valid {
validMap[reflect.TypeOf(validState)] = nil
t.Run(validState.status().String(), func(t *testing.T) {
if err := initialState.transition(validState); err != nil {
t.Fatal(err)
}
})
}
for state := range states {
if _, ok := validMap[reflect.TypeOf(state)]; ok {
continue
}
t.Run(state.status().String(), func(t *testing.T) {
err := initialState.transition(state)
if err == nil {
t.Fatal("transition should fail")
}
if !isStateTransitionError(err) {
t.Fatal("expected stateTransitionError")
}
})
}
}
func TestStoppedStateTransition(t *testing.T) {
testTransitions(
t,
&stoppedState{c: &linuxContainer{}},
[]containerState{
&stoppedState{},
&runningState{},
&restoredState{},
},
)
}
func TestPausedStateTransition(t *testing.T) {
testTransitions(
t,
&pausedState{c: &linuxContainer{}},
[]containerState{
&pausedState{},
&runningState{},
&stoppedState{},
},
)
}
func TestRestoredStateTransition(t *testing.T) {
testTransitions(
t,
&restoredState{c: &linuxContainer{}},
[]containerState{
&stoppedState{},
&runningState{},
},
)
}
func TestRunningStateTransition(t *testing.T) {
testTransitions(
t,
&runningState{c: &linuxContainer{}},
[]containerState{
&stoppedState{},
&pausedState{},
&runningState{},
},
)
}
func TestCreatedStateTransition(t *testing.T) {
testTransitions(
t,
&createdState{c: &linuxContainer{}},
[]containerState{
&stoppedState{},
&pausedState{},
&runningState{},
&createdState{},
},
)
}
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