Add a testcase with a binlog postion of >1 byte

Author: dveeden

cmd/go-mysqlbinlog/main.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"log/slog"
 	"os"
+	"time"
 
 	"github.com/pingcap/errors"
 
@@ -51,6 +52,8 @@ func main() {
 		SemiSyncEnabled:      *semiSync,
 		UseDecimal:           true,
 		MaxReconnectAttempts: 10,
+		HeartbeatPeriod:      time.Second * 10,
+		DumpCommandFlag:      replication.USE_HEARTBEAT_EVENT_V2,
 	}
 
 	logOpts := &slog.HandlerOptions{

replication/event_test.go

@@ -234,6 +234,12 @@ func TestHeartbeatEvent(t *testing.T) {
 			[]byte{},
 			HeartbeatEvent{},
 		},
+		{
+			false,
+			2,
+			[]byte{0x1, 0xd, 0x62, 0x69, 0x6e, 0x6c, 0x6f, 0x67, 0x2e, 0x30, 0x30, 0x30, 0x30, 0x30, 0x31, 0x2, 0x4, 0xfd, 0xbb, 0xaf, 0x27, 0x0},
+			HeartbeatEvent{Version: 2, Filename: "binlog.000001", Offset: 2600891},
+		},
 	}
 
 	for _, tc := range testcases {