feat: allow setting sign=False on transactions (good for titanoboa) (…

…#2486)

src/ape/api/accounts.py

@@ -124,6 +124,7 @@ def call(
         txn: TransactionAPI,
         send_everything: bool = False,
         private: bool = False,
+        sign: bool = True,
         **signer_options,
     ) -> ReceiptAPI:
         """
@@ -143,6 +144,8 @@ def call(
               Defaults to ``False``.
             private (bool): ``True`` will use the
               :meth:`~ape.api.providers.ProviderAPI.send_private_transaction` method.
+            sign (bool): ``False`` to not sign the transaction (useful for providers like Titanoboa
+              which still use a sender but don't need to sign).
             **signer_options: Additional kwargs given to the signer to modify the signing operation.
 
         Returns:
@@ -177,17 +180,21 @@ def call(
             else:
                 txn.value = amount_to_send
 
-        signed_txn = self.sign_transaction(txn, **signer_options)
-        if not signed_txn:
-            raise SignatureError("The transaction was not signed.")
+        if sign:
+            prepared_txn = self.sign_transaction(txn, **signer_options)
+            if not prepared_txn:
+                raise SignatureError("The transaction was not signed.")
 
-        if not txn.sender:
-            txn.sender = self.address
+        else:
+            prepared_txn = txn
+
+        if not prepared_txn.sender:
+            prepared_txn.sender = self.address
 
         return (
-            self.provider.send_private_transaction(signed_txn)
+            self.provider.send_private_transaction(prepared_txn)
             if private
-            else self.provider.send_transaction(signed_txn)
+            else self.provider.send_transaction(prepared_txn)
         )
 
     def transfer(
@@ -683,7 +690,12 @@ def sign_transaction(self, txn: TransactionAPI, **signer_options) -> Optional[Tr
         return txn
 
     def call(
-        self, txn: TransactionAPI, send_everything: bool = False, private: bool = False, **kwargs
+        self,
+        txn: TransactionAPI,
+        send_everything: bool = False,
+        private: bool = False,
+        sign: bool = True,
+        **kwargs,
     ) -> ReceiptAPI:
         txn = self.prepare_transaction(txn)
         txn.sender = txn.sender or self.raw_address

tests/functional/test_accounts.py

@@ -261,6 +261,11 @@ def test_transfer_mixed_up_sender_and_value(sender, receiver):
         sender.transfer("123 wei", receiver)
 
 
+def test_transfer_sign_is_false(sender, receiver):
+    with pytest.raises(SignatureError):
+        sender.transfer(receiver, "1 gwei", sign=False)
+
+
 def test_deploy(owner, contract_container, clean_contract_caches):
     contract = owner.deploy(contract_container, 0)
     assert contract.address
@@ -978,3 +983,15 @@ def test_repr(account_manager):
     """
     actual = repr(account_manager)
     assert actual == "<AccountManager>"
+
+
+def test_call(owner, vyper_contract_instance):
+    tx = vyper_contract_instance.setNumber.as_transaction(5991)
+    receipt = owner.call(tx)
+    assert not receipt.failed
+
+
+def test_call_sign_false(owner, vyper_contract_instance):
+    tx = vyper_contract_instance.setNumber.as_transaction(5991)
+    with pytest.raises(SignatureError):
+        owner.call(tx, sign=False)

tests/functional/test_contract_instance.py

@@ -17,6 +17,7 @@
     ContractLogicError,
     CustomError,
     MethodNonPayableError,
+    SignatureError,
 )
 from ape.types.address import AddressType
 from ape_ethereum.transactions import TransactionStatusEnum, TransactionType
@@ -74,6 +75,11 @@ def test_contract_transactions(owner, contract_instance):
     assert contract_instance.myNumber() == 2
 
 
+def test_contract_transaction_when_sign_false(owner, contract_instance):
+    with pytest.raises(SignatureError):
+        contract_instance.setNumber(2, sender=owner, sign=False)
+
+
 def test_wrong_number_of_arguments(owner, contract_instance):
     if "sol" in contract_instance.contract_type.source_id.lower():
         second = r"\n\t.*setNumber\(uint256 num, address _address\).*"