refactor[test]: bypass eth-tester and interface with evm backend directly

setup.py

@@ -20,6 +20,7 @@
         "lark==1.1.2",
         "hypothesis[lark]>=5.37.1,<6.0",
         "eth-stdlib==0.2.6",
+        "pyrevm==0.2.1",
     ],
     "lint": [
         "black==23.12.0",

tests/conftest.py

@@ -15,6 +15,7 @@
 from web3.contract import Contract
 from web3.providers.eth_tester import EthereumTesterProvider
 
+from tests.revm.revm_env import RevmEnv
 from tests.utils import working_directory
 from vyper import compiler
 from vyper.ast.grammar import parse_vyper_source
@@ -157,6 +158,11 @@ def tester():
     return EthereumTester(backend=backend)
 
 
+@pytest.fixture(scope="module")
+def revm_env():
+    return RevmEnv()
+
+
 def zero_gas_price_strategy(web3, transaction_params=None):
     return 0  # zero gas price makes testing simpler.
 
@@ -340,6 +346,14 @@ def fn(source_code, *args, **kwargs):
     return fn
 
 
+@pytest.fixture(scope="module")
+def get_revm_contract(revm_env, optimize, output_formats):
+    def fn(source_code, *args, **kwargs):
+        return revm_env.deploy_source(source_code, optimize, output_formats, *args, **kwargs)
+
+    return fn
+
+
 @pytest.fixture
 def get_contract_with_gas_estimation(tester, w3, optimize, output_formats):
     def get_contract_with_gas_estimation(source_code, *args, **kwargs):

tests/functional/builtins/folding/conftest.py

@@ -0,0 +1,6 @@
+import pytest
+
+
+@pytest.fixture(scope="module")
+def get_contract(get_revm_contract):
+    return get_revm_contract

tests/revm/abi.py

@@ -0,0 +1,47 @@
+# wrapper module around whatever encoder we are using
+from typing import Any
+
+from eth.codecs.abi.decoder import Decoder
+from eth.codecs.abi.encoder import Encoder
+from eth.codecs.abi.exceptions import ABIError
+from eth.codecs.abi.nodes import ABITypeNode, BytesNode
+from eth.codecs.abi.parser import Parser
+
+_parsers: dict[str, ABITypeNode] = {}
+
+
+class _Encoder(Encoder):
+    """
+    Custom encoder that parses bytes from hex to bytes
+    """
+
+    @classmethod
+    def visit_BytesNode(cls, node: BytesNode, value: bytes | str) -> bytes:
+        if isinstance(value, str):
+            assert value.startswith("0x"), "Sanity check failed: expected hex string"
+            value = bytes.fromhex(value[2:])
+        return super().visit_BytesNode(node, value)
+
+
+def _get_parser(schema: str):
+    try:
+        return _parsers[schema]
+    except KeyError:
+        _parsers[schema] = (ret := Parser.parse(schema))
+        return ret
+
+
+def abi_encode(schema: str, data: Any) -> bytes:
+    return _Encoder.encode(_get_parser(schema), data)
+
+
+def abi_decode(schema: str, data: bytes) -> Any:
+    return Decoder.decode(_get_parser(schema), data)
+
+
+def is_abi_encodable(abi_type: str, data: Any) -> bool:
+    try:
+        abi_encode(abi_type, data)
+        return True
+    except ABIError:
+        return False