me when i dont use vcs properly v2

proto/connection_test.go

@@ -0,0 +1,59 @@
+package proto_test
+
+import (
+	"bytes"
+	"math"
+	"testing"
+
+	"github.com/admin-else/strom/proto"
+	"github.com/admin-else/strom/server"
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
+)
+
+var nanIgnorer32 = cmp.Comparer(func(x, y float32) bool {
+	return (math.IsNaN(float64(x)) && math.IsNaN(float64(y))) || x == y
+})
+
+var nanIgnorer64 = cmp.Comparer(func(x, y float64) bool {
+	return (math.IsNaN(x) && math.IsNaN(y)) || x == y
+})
+
+func FuzzConn(f *testing.F) {
+	f.Fuzz(func(t *testing.T, inbytes []byte) {
+		b1 := bytes.NewBuffer(inbytes)
+		b2 := bytes.NewBuffer(nil)
+		conn := server.Servee(nil)
+		conn.R = b1
+		conn.W = b2
+		_ = conn.SetVersion("1.21.8") // cant fail
+		p, err := conn.Receive()
+		if err != nil {
+			t.Skip(err)
+			return
+		}
+		if b1.Len() != 0 {
+			t.Skip("not all bytes read")
+			return
+		}
+		err = conn.Send(p)
+		if err != nil {
+			t.Fatal(err)
+			return
+		}
+		b1.Reset()
+		conn.R = b2
+		conn.W = b1
+		p2, err := conn.Receive()
+		if err != nil {
+			t.Fatal(err)
+			return
+		}
+		if !cmp.Equal(p, p2, nanIgnorer32, nanIgnorer64, cmpopts.IgnoreFields(proto.UnCodablePacket{}, "Err")) {
+			t.Error("decoded and encoded decoded data are not equal",
+				cmp.Diff(p, p2, nanIgnorer32, nanIgnorer64, cmpopts.IgnoreFields(proto.UnCodablePacket{}, "Err")),
+			)
+		}
+		return
+	})
+}