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manager_test.go
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manager_test.go
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package connection
import (
"errors"
"github.com/mysterium/node/communication"
"github.com/mysterium/node/identity"
"github.com/mysterium/node/openvpn"
"github.com/mysterium/node/openvpn/middlewares/client/bytescount"
"github.com/mysterium/node/openvpn/middlewares/state"
"github.com/mysterium/node/server"
"github.com/mysterium/node/service_discovery/dto"
"github.com/mysterium/node/session"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/suite"
"sync"
"testing"
"time"
)
type testContext struct {
suite.Suite
connManager *connectionManager
fakeDiscoveryClient *server.ClientFake
fakeOpenVpn *fakeOpenvpnClient
fakeStatsKeeper *fakeSessionStatsKeeper
fakeDialog *fakeDialog
openvpnCreationError error
}
var (
myID = identity.FromAddress("identity-1")
activeProviderID = identity.FromAddress("vpn-node-1")
activeProviderContact = dto.Contact{}
activeProposal = dto.ServiceProposal{
ProviderID: activeProviderID.Address,
ProviderContacts: []dto.Contact{activeProviderContact},
}
)
func (tc *testContext) SetupTest() {
tc.fakeDiscoveryClient = server.NewClientFake()
tc.fakeDiscoveryClient.RegisterProposal(activeProposal, nil)
tc.fakeDialog = &fakeDialog{}
dialogCreator := func(consumer, provider identity.Identity, contact dto.Contact) (communication.Dialog, error) {
return tc.fakeDialog, nil
}
tc.fakeOpenVpn = &fakeOpenvpnClient{
nil,
[]openvpn.State{
openvpn.ConnectingState,
openvpn.WaitState,
openvpn.AuthenticatingState,
openvpn.GetConfigState,
openvpn.AssignIpState,
openvpn.ConnectedState,
},
[]openvpn.State{
openvpn.ExitingState,
},
nil,
sync.WaitGroup{},
}
tc.openvpnCreationError = nil
fakeVpnClientFactory := func(vpnSession session.SessionDto, consumerID identity.Identity, providerID identity.Identity, callback state.Callback) (openvpn.Client, error) {
//each test can set this value to simulate openvpn creation error, this flag is reset BEFORE each test
if tc.openvpnCreationError != nil {
return nil, tc.openvpnCreationError
}
tc.fakeOpenVpn.stateCallback = callback
return tc.fakeOpenVpn, nil
}
tc.fakeStatsKeeper = &fakeSessionStatsKeeper{}
tc.connManager = NewManager(tc.fakeDiscoveryClient, dialogCreator, fakeVpnClientFactory, tc.fakeStatsKeeper)
}
func (tc *testContext) TestWhenNoConnectionIsMadeStatusIsNotConnected() {
assert.Exactly(tc.T(), statusNotConnected(), tc.connManager.Status())
}
func (tc *testContext) TestWithUnknownProviderConnectionIsNotMade() {
noProposalsError := errors.New("provider has no service proposals")
assert.Equal(tc.T(), noProposalsError, tc.connManager.Connect(myID, identity.FromAddress("unknown-node")))
assert.Equal(tc.T(), statusNotConnected(), tc.connManager.Status())
assert.False(tc.T(), tc.fakeStatsKeeper.sessionStartMarked)
}
func (tc *testContext) TestOnConnectErrorStatusIsNotConnectedAndSessionStartIsNotMarked() {
fatalVpnError := errors.New("fatal connection error")
tc.fakeOpenVpn.onStartReturnError = fatalVpnError
assert.Error(tc.T(), tc.connManager.Connect(myID, activeProviderID))
assert.Equal(tc.T(), statusNotConnected(), tc.connManager.Status())
assert.True(tc.T(), tc.fakeDialog.closed)
assert.False(tc.T(), tc.fakeStatsKeeper.sessionStartMarked)
}
func (tc *testContext) TestWhenManagerMadeConnectionStatusReturnsConnectedStateAndSessionId() {
err := tc.connManager.Connect(myID, activeProviderID)
assert.NoError(tc.T(), err)
assert.Equal(tc.T(), statusConnected("vpn-connection-id"), tc.connManager.Status())
}
func (tc *testContext) TestWhenManagerMadeConnectionSessionStartIsMarked() {
err := tc.connManager.Connect(myID, activeProviderID)
assert.NoError(tc.T(), err)
assert.True(tc.T(), tc.fakeStatsKeeper.sessionStartMarked)
}
func (tc *testContext) TestStatusReportsConnectingWhenConnectionIsInProgress() {
tc.fakeOpenVpn.onStartReportStates = []openvpn.State{}
go func() {
tc.connManager.Connect(myID, activeProviderID)
assert.Fail(tc.T(), "This should never return")
}()
waitABit()
assert.Equal(tc.T(), statusConnecting(), tc.connManager.Status())
}
func (tc *testContext) TestStatusReportsDisconnectingThenNotConnected() {
tc.fakeOpenVpn.onStopReportStates = []openvpn.State{}
err := tc.connManager.Connect(myID, activeProviderID)
assert.NoError(tc.T(), err)
assert.Equal(tc.T(), statusConnected("vpn-connection-id"), tc.connManager.Status())
assert.NoError(tc.T(), tc.connManager.Disconnect())
assert.Equal(tc.T(), statusDisconnecting(), tc.connManager.Status())
tc.fakeOpenVpn.reportState(openvpn.ExitingState)
waitABit()
assert.Equal(tc.T(), statusNotConnected(), tc.connManager.Status())
assert.True(tc.T(), tc.fakeStatsKeeper.sessionEndMarked)
}
func (tc *testContext) TestConnectResultsInAlreadyConnectedErrorWhenConnectionExists() {
assert.NoError(tc.T(), tc.connManager.Connect(myID, activeProviderID))
assert.Equal(tc.T(), ErrAlreadyExists, tc.connManager.Connect(myID, activeProviderID))
}
func (tc *testContext) TestDisconnectReturnsErrorWhenNoConnectionExists() {
assert.Equal(tc.T(), ErrNoConnection, tc.connManager.Disconnect())
}
func (tc *testContext) TestReconnectingStatusIsReportedWhenOpenVpnGoesIntoReconnectingState() {
assert.NoError(tc.T(), tc.connManager.Connect(myID, activeProviderID))
tc.fakeOpenVpn.reportState(openvpn.ReconnectingState)
waitABit()
assert.Equal(tc.T(), statusReconnecting(), tc.connManager.Status())
}
func (tc *testContext) TestDoubleDisconnectResultsInError() {
assert.NoError(tc.T(), tc.connManager.Connect(myID, activeProviderID))
assert.Equal(tc.T(), statusConnected("vpn-connection-id"), tc.connManager.Status())
assert.NoError(tc.T(), tc.connManager.Disconnect())
waitABit()
assert.Equal(tc.T(), statusNotConnected(), tc.connManager.Status())
assert.Equal(tc.T(), ErrNoConnection, tc.connManager.Disconnect())
}
func (tc *testContext) TestTwoConnectDisconnectCyclesReturnNoError() {
assert.NoError(tc.T(), tc.connManager.Connect(myID, activeProviderID))
assert.Equal(tc.T(), statusConnected("vpn-connection-id"), tc.connManager.Status())
assert.NoError(tc.T(), tc.connManager.Disconnect())
waitABit()
assert.Equal(tc.T(), statusNotConnected(), tc.connManager.Status())
assert.NoError(tc.T(), tc.connManager.Connect(myID, activeProviderID))
assert.Equal(tc.T(), statusConnected("vpn-connection-id"), tc.connManager.Status())
assert.NoError(tc.T(), tc.connManager.Disconnect())
waitABit()
assert.Equal(tc.T(), statusNotConnected(), tc.connManager.Status())
}
func (tc *testContext) TestConnectFailsIfOpenvpnFactoryReturnsError() {
tc.openvpnCreationError = errors.New("failed to create vpn instanse")
assert.Error(tc.T(), tc.connManager.Connect(myID, activeProviderID))
}
func (tc *testContext) TestStatusIsConnectedWhenConnectCommandReturnsWithoutError() {
tc.connManager.Connect(myID, activeProviderID)
assert.Equal(tc.T(), statusConnected("vpn-connection-id"), tc.connManager.Status())
}
func (tc *testContext) TestConnectingInProgressCanBeCanceled() {
tc.fakeOpenVpn.onStartReportStates = []openvpn.State{}
connectWaiter := &sync.WaitGroup{}
connectWaiter.Add(1)
var err error
go func() {
defer connectWaiter.Done()
err = tc.connManager.Connect(myID, activeProviderID)
}()
waitABit()
assert.Equal(tc.T(), statusConnecting(), tc.connManager.Status())
assert.NoError(tc.T(), tc.connManager.Disconnect())
connectWaiter.Wait()
assert.Equal(tc.T(), ErrConnectionCancelled, err)
}
func (tc *testContext) TestConnectMethodReturnsErrorIfOpenvpnClientExitsDuringConnect() {
tc.fakeOpenVpn.onStartReportStates = []openvpn.State{}
tc.fakeOpenVpn.onStopReportStates = []openvpn.State{}
connectWaiter := sync.WaitGroup{}
connectWaiter.Add(1)
var err error
go func() {
defer connectWaiter.Done()
err = tc.connManager.Connect(myID, activeProviderID)
}()
waitABit()
tc.fakeOpenVpn.reportState(openvpn.ExitingState)
connectWaiter.Wait()
assert.Equal(tc.T(), ErrOpenvpnProcessDied, err)
}
func TestConnectionManagerSuite(t *testing.T) {
suite.Run(t, new(testContext))
}
type fakeOpenvpnClient struct {
onStartReturnError error
onStartReportStates []openvpn.State
onStopReportStates []openvpn.State
stateCallback state.Callback
fakeProcess sync.WaitGroup
}
func (foc *fakeOpenvpnClient) Start() error {
if foc.onStartReturnError != nil {
return foc.onStartReturnError
}
foc.fakeProcess.Add(1)
for _, openvpnState := range foc.onStartReportStates {
foc.reportState(openvpnState)
}
return nil
}
func (foc *fakeOpenvpnClient) Wait() error {
foc.fakeProcess.Wait()
return nil
}
func (foc *fakeOpenvpnClient) Stop() error {
for _, openvpnState := range foc.onStopReportStates {
foc.reportState(openvpnState)
}
foc.fakeProcess.Done()
return nil
}
func (foc *fakeOpenvpnClient) reportState(state openvpn.State) {
foc.stateCallback(state)
}
type fakeDialog struct {
peerId identity.Identity
closed bool
}
func (fd *fakeDialog) PeerID() identity.Identity {
return fd.peerId
}
func (fd *fakeDialog) Close() error {
fd.closed = true
return nil
}
func (fd *fakeDialog) Receive(consumer communication.MessageConsumer) error {
return nil
}
func (fd *fakeDialog) Respond(consumer communication.RequestConsumer) error {
return nil
}
func (fd *fakeDialog) Send(producer communication.MessageProducer) error {
return nil
}
func (fd *fakeDialog) Request(producer communication.RequestProducer) (responsePtr interface{}, err error) {
return &session.SessionCreateResponse{
Success: true,
Message: "Everything is great!",
Session: session.SessionDto{
ID: "vpn-connection-id",
Config: "vpn-connection-config",
},
},
nil
}
type fakeSessionStatsKeeper struct {
sessionStartMarked, sessionEndMarked bool
}
func (fsk *fakeSessionStatsKeeper) Save(stats bytescount.SessionStats) {
}
func (fsk *fakeSessionStatsKeeper) Retrieve() bytescount.SessionStats {
return bytescount.SessionStats{}
}
func (fsk *fakeSessionStatsKeeper) MarkSessionStart() {
fsk.sessionStartMarked = true
}
func (fsk *fakeSessionStatsKeeper) GetSessionDuration() time.Duration {
return time.Duration(0)
}
func (fsk *fakeSessionStatsKeeper) MarkSessionEnd() {
fsk.sessionEndMarked = true
}
func waitABit() {
//usually time.Sleep call gives a chance for other goroutines to kick in
//important when testing async code
time.Sleep(10 * time.Millisecond)
}