fix: eth-tester was failing with too-low base fee errors (#2489)

Co-authored-by: antazoey <antyzoa@gmail.com>

Author: antazoey

src/ape_test/provider.py

@@ -498,7 +498,7 @@ def add_account(self, private_key: str):
         self.evm_backend.add_account(private_key)
 
     def _get_last_base_fee(self) -> int:
-        base_fee = self._get_latest_block_rpc().get("base_fee_per_gas", None)
+        base_fee = self.evm_backend.get_block_by_number("pending").get("base_fee_per_gas", None)
         if base_fee is not None:
             return base_fee
 

tests/functional/test_accounts.py

@@ -170,7 +170,7 @@ def test_transfer_without_value_send_everything_true_with_low_gas(sender, receiv
 
     # Clear balance of sender.
     # Use small gas so for sure runs out of money.
-    receipt = sender.transfer(receiver, send_everything=True, gas=21000)
+    receipt = sender.transfer(receiver, send_everything=True, gas=22000)
 
     value_given = receipt.value
     total_spent = value_given + receipt.total_fees_paid

tests/functional/test_provider.py

@@ -534,7 +534,7 @@ def rate_limit_hook(self, rpc, params):
 
 def test_base_fee(eth_tester_provider):
     actual = eth_tester_provider.base_fee
-    assert actual > 0
+    assert actual >= eth_tester_provider.get_block("pending").base_fee
 
     # NOTE: Mostly doing this to ensure we are calling the fee history
     #   RPC correctly. There was a bug where we were not.