Add initial sim setup, test

python/erc20_demurrage_token/sim/__init__.py

@@ -0,0 +1 @@
+from .sim import DemurrageTokenSimulation

python/erc20_demurrage_token/sim/sim.py

@@ -0,0 +1,38 @@
+# external imports
+from chainlib.eth.unittest.ethtester import create_tester_signer
+from chainlib.eth.unittest.base import TestRPCConnection
+from chainlib.eth.tx import receipt
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.address import to_checksum_address
+from crypto_dev_signer.keystore.dict import DictKeystore
+from crypto_dev_signer.eth.signer import ReferenceSigner as EIP155Signer
+from hexathon import (
+        strip_0x,
+        add_0x,
+        )
+
+# local imports
+from erc20_demurrage_token import DemurrageToken
+
+class DemurrageTokenSimulation:
+
+    def __init__(self, chain_spec, settings, redistribute=True, cap=0):
+        self.accounts = []
+        self.keystore = DictKeystore()
+        self.signer = EIP155Signer(self.keystore)
+        self.eth_helper = create_tester_signer(self.keystore)
+        self.eth_backend = self.eth_helper.backend
+        self.rpc = TestRPCConnection(None, self.eth_helper, self.signer)
+        for a in self.keystore.list():
+            self.accounts.append(add_0x(to_checksum_address(a)))
+        settings.sink_address = self.accounts[0]
+
+        nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.rpc)
+        c = DemurrageToken(chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        (tx_hash, o) = c.constructor(self.accounts[0], settings, redistribute=redistribute, cap=cap)
+        self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        if (r['status'] != 1):
+            raise RuntimeError('contract deployment failed')
+        self.address = r['contract_address']