Merge branch 'main' into julien/refactor-leveldb

cosmos · Sep 25, 2022 · bf08f48 · bf08f48
2 parents a989c26 + 55373cb
commit bf08f48
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diff --git a/math/CHANGELOG.md b/math/CHANGELOG.md
@@ -31,4 +31,5 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+* [#13381](https://github.com/cosmos/cosmos-sdk/pull/13381) Add uint `IsNil` method.
 * [#12634](https://github.com/cosmos/cosmos-sdk/pull/12634) Move `sdk.Dec` to math package, call it `LegacyDec`.
diff --git a/math/uint.go b/math/uint.go
@@ -18,6 +18,11 @@ func (u Uint) BigInt() *big.Int {
 	return new(big.Int).Set(u.i)
 }
 
+// IsNil returns true if Uint is uninitialized
+func (u Uint) IsNil() bool {
+	return u.i == nil
+}
+
 // NewUintFromBigUint constructs Uint from big.Uint
 func NewUintFromBigInt(i *big.Int) Uint {
 	u, err := checkNewUint(i)

diff --git a/math/uint_test.go b/math/uint_test.go
@@ -91,6 +91,11 @@ func (s *uintTestSuite) TestUintPanics() {
 	s.Require().True(sdkmath.ZeroUint().LTE(sdkmath.OneUint()))
 }
 
+func (s *uintTestSuite) TestIsNil() {
+	s.Require().False(sdkmath.OneUint().IsNil())
+	s.Require().True(sdkmath.Uint{}.IsNil())
+}
+
 func (s *uintTestSuite) TestArithUint() {
 	for d := 0; d < 1000; d++ {
 		n1 := uint64(rand.Uint32())