fix: 1757

Author: claytonneal

packages/core/src/transaction/Clause.ts

@@ -136,7 +136,10 @@ class Clause implements TransactionClause {
         amount: VET = VET.of(FixedPointNumber.ZERO),
         clauseOptions?: ClauseOptions
     ): Clause {
-        if (amount.value.isFinite() && amount.value.isPositive()) {
+        if (
+            amount.value.isFinite() &&
+            amount.value.gte(FixedPointNumber.ZERO)
+        ) {
             return new Clause(
                 contractAddress.toString().toLowerCase(),
                 Hex.PREFIX + amount.wei.toString(Hex.RADIX),

packages/core/tests/transaction/Clause.unit.test.ts

@@ -89,6 +89,22 @@ describe('Clause class tests', () => {
             expect(actual.data).toBeDefined();
         });
 
+        test('Return Clause <- VET value is zero', () => {
+            const actual = Clause.callFunction(
+                ClauseFixture.contract.address,
+                ABIContract.ofAbi(ClauseFixture.contract.abi).getFunction(
+                    'set'
+                ),
+                [1],
+                VET.of(0)
+            );
+            expect(actual.to).toBe(
+                ClauseFixture.contract.address.toString().toLowerCase()
+            );
+            expect(actual.amount().isZero()).toBe(true);
+            expect(actual.data).toBeDefined();
+        });
+
         test('Return Clause <- call function & comment', () => {
             const comment = 'Setting x = 1.';
             const actual = Clause.callFunction(