feat(types): Implement .IsGT for types.Coin (#19281)

types/coin.go

@@ -68,6 +68,16 @@ func (coin Coin) IsZero() bool {
 	return coin.Amount.IsZero()
 }
 
+// IsGT returns true if they are the same type and the receiver is
+// a greater value
+func (coin Coin) IsGT(other Coin) bool {
+	if coin.Denom != other.Denom {
+		panic(fmt.Sprintf("invalid coin denominations; %s, %s", coin.Denom, other.Denom))
+	}
+
+	return coin.Amount.GT(other.Amount)
+}
+
 // IsGTE returns true if they are the same type and the receiver is
 // an equal or greater value
 func (coin Coin) IsGTE(other Coin) bool {

types/coin_test.go

@@ -302,6 +302,30 @@ func (s *coinTestSuite) TestQuoIntCoins() {
 	}
 }
 
+func (s *coinTestSuite) TestIsGTCoin() {
+	cases := []struct {
+		inputOne sdk.Coin
+		inputTwo sdk.Coin
+		expected bool
+		panics   bool
+	}{
+		{sdk.NewInt64Coin(testDenom1, 2), sdk.NewInt64Coin(testDenom1, 1), true, false},
+		{sdk.NewInt64Coin(testDenom1, 1), sdk.NewInt64Coin(testDenom1, 1), false, false},
+		{sdk.NewInt64Coin(testDenom1, 1), sdk.NewInt64Coin(testDenom1, 2), false, false},
+		{sdk.NewInt64Coin(testDenom1, 1), sdk.NewInt64Coin(testDenom2, 1), false, true},
+	}
+
+	for tcIndex, tc := range cases {
+		tc := tc
+		if tc.panics {
+			s.Require().Panics(func() { tc.inputOne.IsGT(tc.inputTwo) })
+		} else {
+			res := tc.inputOne.IsGT(tc.inputTwo)
+			s.Require().Equal(tc.expected, res, "coin GT relation is incorrect, tc #%d", tcIndex)
+		}
+	}
+}
+
 func (s *coinTestSuite) TestIsGTECoin() {
 	cases := []struct {
 		inputOne sdk.Coin