Test coverage

lib/reversetunnel/localsite_test.go

@@ -0,0 +1,101 @@
+// Copyright 2022 Gravitational, Inc
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package reversetunnel
+
+import (
+	"context"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/gravitational/teleport/api/types"
+	"github.com/gravitational/teleport/api/utils/sshutils"
+	"github.com/gravitational/teleport/lib/auth"
+	"github.com/gravitational/teleport/lib/services"
+	"github.com/gravitational/trace"
+	"github.com/stretchr/testify/require"
+)
+
+func TestLocalSiteOverlap(t *testing.T) {
+	t.Parallel()
+
+	// to stop (*localSite).periodicFunctions()
+	ctx, ctxCancel := context.WithCancel(context.Background())
+	ctxCancel()
+
+	srv := &server{
+		ctx: ctx,
+		newAccessPoint: func(clt auth.ClientI, _ []string) (auth.RemoteProxyAccessPoint, error) {
+			return clt, nil
+		},
+	}
+
+	site, err := newlocalSite(srv, "clustername", &mockLocalSiteClient{})
+	require.NoError(t, err)
+
+	nodeID := uuid.NewString()
+	connType := types.NodeTunnel
+	dreq := &sshutils.DialReq{
+		ServerID: nodeID,
+		ConnType: connType,
+	}
+
+	conn1, err := site.addConn(nodeID, connType, mockRemoteConnConn{}, nil)
+	require.NoError(t, err)
+
+	conn2, err := site.addConn(nodeID, connType, mockRemoteConnConn{}, nil)
+	require.NoError(t, err)
+
+	c, err := site.getRemoteConn(dreq)
+	require.True(t, trace.IsNotFound(err))
+	require.Nil(t, c)
+
+	conn1.setLastHeartbeat(time.Now())
+	c, err = site.getRemoteConn(dreq)
+	require.NoError(t, err)
+	require.Equal(t, conn1, c)
+
+	conn2.setLastHeartbeat(time.Now())
+	c, err = site.getRemoteConn(dreq)
+	require.NoError(t, err)
+	require.Equal(t, conn2, c)
+
+	conn2.markInvalid(nil)
+	c, err = site.getRemoteConn(dreq)
+	require.NoError(t, err)
+	require.Equal(t, conn1, c)
+
+	conn1.markInvalid(nil)
+	c, err = site.getRemoteConn(dreq)
+	require.True(t, trace.IsNotFound(err))
+	require.Nil(t, c)
+}
+
+type mockLocalSiteClient struct {
+	auth.Client
+}
+
+// called by (*localSite).sshTunnelStats() as part of (*localSite).periodicFunctions()
+func (mockLocalSiteClient) GetNodes(_ context.Context, _ string, _ ...services.MarshalOption) ([]types.Server, error) {
+	return nil, nil
+}
+
+type mockRemoteConnConn struct {
+	net.Conn
+}
+
+// called for logging by (*remoteConn).markInvalid()
+func (mockRemoteConnConn) RemoteAddr() net.Addr { return nil }