feat(types): Add a ValueCodec for Uint complex type

CHANGELOG.md

@@ -40,6 +40,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Features
 
+* (types) [#23780](https://github.com/cosmos/cosmos-sdk/pull/23780) Add a ValueCodec for the math.Uint type that can be used in collections maps.
 * (perf)[#24045](https://github.com/cosmos/cosmos-sdk/pull/24045) Sims: Replace runsim command with Go stdlib testing. CLI: `Commit` default true, `Lean`, `SimulateEveryOperation`, `PrintAllInvariants`, `DBBackend` params removed
 * (crypto/keyring) [#24040](https://github.com/cosmos/cosmos-sdk/pull/24040) Expose the db keyring used in the keystore.
 * (types) [#23919](https://github.com/cosmos/cosmos-sdk/pull/23919) Add MustValAddressFromBech32 function.

types/codec_test.go

@@ -3,10 +3,36 @@ package types
 import (
 	"testing"
 
+	"github.com/stretchr/testify/require"
+
 	"cosmossdk.io/collections/colltest"
 	"cosmossdk.io/math"
 )
 
 func TestIntValue(t *testing.T) {
 	colltest.TestValueCodec(t, IntValue, math.NewInt(10005994859))
+
+	original := math.NewInt(132005994859)
+
+	// Stringify Test
+	str := IntValue.Stringify(original)
+	require.Equal(t, original.String(), str)
+
+	// ValueType Test
+	require.Equal(t, IntValue.ValueType(), "math.Int")
+}
+
+func TestUintValue(t *testing.T) {
+	colltest.TestValueCodec(t, UintValue, math.NewUint(1337))
+	colltest.TestValueCodec(t, UintValue, math.ZeroUint())
+	colltest.TestValueCodec(t, UintValue, math.NewUintFromString("1000000000000000000"))
+
+	original := math.NewUint(1234567890)
+
+	// Stringify Test
+	str := UintValue.Stringify(original)
+	require.Equal(t, original.String(), str)
+
+	// ValueType Test
+	require.Equal(t, UintValue.ValueType(), "math.Uint")
 }

types/collections.go

@@ -32,6 +32,9 @@ var (
 	// IntValue represents a collections.ValueCodec to work with Int.
 	IntValue collcodec.ValueCodec[math.Int] = intValueCodec{}
 
+	// UintValue represents a collections.ValueCodec to work with Uint.
+	UintValue collcodec.ValueCodec[math.Uint] = uintValueCodec{}
+
 	// LegacyDecValue represents a collections.ValueCodec to work with LegacyDec.
 	LegacyDecValue collcodec.ValueCodec[math.LegacyDec] = legacyDecValueCodec{}
 
@@ -46,6 +49,11 @@ const (
 	LegacyDec string = "math.LegacyDec"
 )
 
+const (
+	Int  string = "math.Int"
+	Uint string = "math.Uint"
+)
+
 type addressUnion interface {
 	AccAddress | ValAddress | ConsAddress
 	String() string
@@ -170,7 +178,43 @@ func (i intValueCodec) Stringify(value math.Int) string {
 }
 
 func (i intValueCodec) ValueType() string {
-	return "math.Int"
+	return Int
+}
+
+type uintValueCodec struct{}
+
+func (i uintValueCodec) Encode(value math.Uint) ([]byte, error) {
+	return value.Marshal()
+}
+
+func (i uintValueCodec) Decode(b []byte) (math.Uint, error) {
+	v := new(math.Uint)
+	err := v.Unmarshal(b)
+	if err != nil {
+		return math.Uint{}, err
+	}
+	return *v, nil
+}
+
+func (i uintValueCodec) EncodeJSON(value math.Uint) ([]byte, error) {
+	return value.MarshalJSON()
+}
+
+func (i uintValueCodec) DecodeJSON(b []byte) (math.Uint, error) {
+	v := new(math.Uint)
+	err := v.UnmarshalJSON(b)
+	if err != nil {
+		return math.Uint{}, err
+	}
+	return *v, nil
+}
+
+func (i uintValueCodec) Stringify(value math.Uint) string {
+	return value.String()
+}
+
+func (i uintValueCodec) ValueType() string {
+	return Uint
 }
 
 type legacyDecValueCodec struct{}