[VOL-2778] Handling IGMP

Change-Id: I54c26bc438a144c7d4c64a9b3d543461fc743ab2
diff --git a/internal/bbsim/responders/igmp/igmp_test.go b/internal/bbsim/responders/igmp/igmp_test.go
new file mode 100644
index 0000000..a1788c0
--- /dev/null
+++ b/internal/bbsim/responders/igmp/igmp_test.go
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+
+ * 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 igmp
+
+import (
+	"encoding/hex"
+	"fmt"
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+	"github.com/opencord/voltha-protos/v3/go/openolt"
+	"github.com/stretchr/testify/assert"
+	"google.golang.org/grpc"
+	"net"
+	"testing"
+)
+
+type mockStream struct {
+	CallCount int
+	Calls     map[int]*openolt.Indication
+	grpc.ServerStream
+}
+
+func (s *mockStream) Send(ind *openolt.Indication) error {
+	s.CallCount++
+	s.Calls[s.CallCount] = ind
+	return nil
+}
+
+func TestHandleNextPacket(t *testing.T) {
+
+	t.Skip("Need to find how to serialize an IGMP packet")
+
+	stream := &mockStream{
+		CallCount: 0,
+		Calls:     make(map[int]*openolt.Indication),
+	}
+
+	mac := net.HardwareAddr{0x2e, 0x60, 0x70, 0x13, 0x15, 0x16}
+
+	packetData := []byte{
+		1, 0, 94, 0, 0, 22, 222, 173, 190, 239, 186, 17, 8, 0, 70, 0, 0, 32, 0, 0, 0, 0, 120, 2, 191,
+		215, 10, 244, 2, 246, 224, 0, 0, 22, 148, 4, 0, 0, 17, 10, 14, 223, 224, 0, 0, 22, 0, 0, 0, 0,
+		0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	}
+	fmt.Println(hex.EncodeToString(packetData))
+
+	packet := gopacket.NewPacket(packetData, layers.LayerTypeIPv4, gopacket.Default)
+
+	fmt.Println(hex.EncodeToString(packet.Data()))
+
+	fmt.Println(packet.Layers())
+
+	err := HandleNextPacket(0, 0, "FOO", 1, 1024, mac, packet, 55, 5, stream)
+	assert.Nil(t, err)
+
+	assert.Equal(t, 1, stream.CallCount)
+}