diff --git a/metering/metering_test.go b/metering/metering_test.go
index 3b8555c3..08011ea8 100644
--- a/metering/metering_test.go
+++ b/metering/metering_test.go
@@ -11,7 +11,9 @@ import (
 	"github.com/streamingfast/dmetering"
 	"github.com/streamingfast/dstore"
 	pbsubstreamstest "github.com/streamingfast/substreams/pb/sf/substreams/v1/test"
+	"github.com/streamingfast/substreams/reqctx"
 	"github.com/stretchr/testify/assert"
+	"google.golang.org/protobuf/proto"
 	"google.golang.org/protobuf/types/known/anypb"
 )
 
@@ -291,6 +293,52 @@ func TestLiveSourceMiddlewareHandlerFactory(t *testing.T) {
 	}
 }
 
+func TestSend(t *testing.T) {
+	ctx := dmetering.WithBytesMeter(context.Background())
+	meter := dmetering.GetBytesMeter(ctx)
+
+	// Set initial meter values
+	meter.CountInc(MeterWasmInputBytes, 100)
+	meter.CountInc(MeterLiveUncompressedReadBytes, 200)
+	meter.CountInc(MeterFileUncompressedReadBytes, 300)
+	meter.CountInc(MeterFileCompressedReadBytes, 400)
+	meter.CountInc(MeterFileUncompressedWriteBytes, 500)
+	meter.CountInc(MeterFileCompressedWriteBytes, 600)
+
+	// Mock response
+	resp := &pbbstream.Block{
+		Id:     "test-block",
+		Number: 1,
+	}
+
+	// Mock emitter
+	emitter := &mockEmitter{}
+	ctx = reqctx.WithEmitter(ctx, emitter)
+
+	// Call the Send function
+	Send(ctx, "user1", "apiKey1", "127.0.0.1", "meta", "endpoint", resp)
+
+	// Verify the emitted event
+	assert.Len(t, emitter.events, 1)
+	event := emitter.events[0]
+
+	assert.Equal(t, "user1", event.UserID)
+	assert.Equal(t, "apiKey1", event.ApiKeyID)
+	assert.Equal(t, "127.0.0.1", event.IpAddress)
+	assert.Equal(t, "meta", event.Meta)
+	assert.Equal(t, "endpoint", event.Endpoint)
+	assert.Equal(t, float64(proto.Size(resp)), event.Metrics["egress_bytes"])
+	assert.Equal(t, float64(0), event.Metrics["written_bytes"])
+	assert.Equal(t, float64(0), event.Metrics["read_bytes"])
+	assert.Equal(t, float64(100), event.Metrics[MeterWasmInputBytes])
+	assert.Equal(t, float64(200), event.Metrics[MeterLiveUncompressedReadBytes])
+	assert.Equal(t, float64(300), event.Metrics[MeterFileUncompressedReadBytes])
+	assert.Equal(t, float64(400), event.Metrics[MeterFileCompressedReadBytes])
+	assert.Equal(t, float64(500), event.Metrics[MeterFileUncompressedWriteBytes])
+	assert.Equal(t, float64(600), event.Metrics[MeterFileCompressedWriteBytes])
+	assert.Equal(t, float64(1), event.Metrics["message_count"])
+}
+
 func bstreamBlk(t *testing.T, blk *pbsubstreamstest.Block) *pbbstream.Block {
 	payload, err := anypb.New(blk)
 	assert.NoError(t, err)
@@ -317,3 +365,15 @@ func (t *testStepableObject) FinalBlockHeight() uint64 {
 func (t *testStepableObject) ReorgJunctionBlock() bstream.BlockRef {
 	return nil
 }
+
+type mockEmitter struct {
+	events []dmetering.Event
+}
+
+func (m *mockEmitter) Emit(ctx context.Context, event dmetering.Event) {
+	m.events = append(m.events, event)
+}
+
+func (m *mockEmitter) Shutdown(err error) {
+	return
+}