add send txns tests

.github/workflows/test.yml

@@ -24,4 +24,7 @@ jobs:
           pip install git+https://github.com/YanhuiJessica/cheb3.git#egg=cheb3
       - name: Python ${{ matrix.python-version }} test utils
         run: |
-          python3 -m pytest
+          python3 -m pytest tests/utils
+      - name: Python ${{ matrix.python-version }} test integration
+        run: |
+          python3 -m pytest tests/integration

tests/integration/test_send_transaction.py

@@ -0,0 +1,61 @@
+import pytest
+from web3 import Web3, EthereumTesterProvider
+
+from cheb3 import Connection
+from cheb3.utils import compile_file, decode_data, encode_with_signature
+
+# set up the keyfile account with a known address
+KEYFILE_ACCOUNT_PKEY = "0x58d23b55bc9cdce1f18c2500f40ff4ab7245df9a89505e9b1fa4851f623d241d"
+KEYFILE_ACCOUNT_ADDRESS = "0xdC544d1AA88Ff8bbd2F2AeC754B1F1e99e1812fd"
+
+# For testing purposes
+class ConnectionMock(Connection):
+    def __init__(self) -> None:
+        self.w3 = Web3(EthereumTesterProvider())
+
+
+@pytest.fixture(scope="module")
+def setup():
+    conn = ConnectionMock()
+    conn.w3.eth.default_account = conn.w3.eth.accounts[0]
+
+    conn.w3.provider.ethereum_tester.add_account(KEYFILE_ACCOUNT_PKEY)
+
+    # fund the account
+    conn.w3.eth.send_transaction(
+        {
+            "from": conn.w3.eth.default_account,
+            "to": KEYFILE_ACCOUNT_ADDRESS,
+            "value": conn.w3.to_wei(1, "ether"),
+            "gas": 21000,
+            "gasPrice": 10**9,
+        }
+    )
+    return conn
+
+
+@pytest.fixture(scope="module")
+def account(setup):
+    return setup.account(KEYFILE_ACCOUNT_PKEY)
+
+
+@pytest.fixture(scope="module")
+def token_contract(setup, account):
+    abi, bytecode = compile_file("tests/integration/contracts/MockWETH.sol", solc_version="0.8.20")["MockWETH"]
+    contract = setup.contract(account, abi=abi, bytecode=bytecode)
+    contract.deploy()
+    return contract
+
+
+def test_contract_send_transaction(token_contract, account):
+    balance_before = token_contract.caller.balanceOf(account.address)
+    token_contract.functions.deposit().send_transaction(value=10)
+    balance_after = token_contract.caller.balanceOf(account.address)
+    assert balance_after == balance_before + 10
+
+
+def test_account_send_transaction(account, token_contract):
+    balance_before = token_contract.caller.balanceOf(account.address)
+    account.send_transaction(token_contract.address, 10, encode_with_signature("deposit()"))
+    balance_after = token_contract.caller.balanceOf(account.address)
+    assert balance_after == balance_before + 10