Add initial sim setup, test

python/MANIFEST.in

@@ -1 +1 @@
-include sarafu_token/data/*
+include erc20_demurrage_token/data/*

python/erc20_demurrage_token/runnable/deploy.py

@@ -91,6 +91,12 @@ if config.get('TOKEN_NAME') == None:
     logg.info('token name not set, using symbol {} as name'.format(config.get('TOKEN_SYMBOL')))
     config.add(config.get('TOKEN_SYMBOL'), 'TOKEN_NAME', True)
 config.dict_override(args_override, 'cli args')
+
+if config.get('TOKEN_SUPPLY_LIMIT') == None:
+    config.add(0, 'TOKEN_SUPPLY_LIMIT', True)
+
+if config.get('TOKEN_REDISTRIBUTION_PERIOD') == None:
+    config.add(10800, 'TOKEN_REDISTRIBUTION_PERIOD', True)
 logg.debug('config loaded:\n{}'.format(config))
 
 passphrase_env = 'ETH_PASSPHRASE'

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']

python/setup.cfg

@@ -29,6 +29,7 @@ python_requires = >= 3.6
 packages =
 	erc20_demurrage_token
 	erc20_demurrage_token.runnable
+	erc20_demurrage_token.data
 
 [options.package_data]
 * =

python/tests/sim/tests_sim.py

@@ -0,0 +1,33 @@
+# standard imports
+import unittest
+import logging
+
+# external imports
+from chainlib.chain import ChainSpec
+
+# local imports
+from erc20_demurrage_token import DemurrageTokenSettings
+from erc20_demurrage_token.sim import DemurrageTokenSimulation
+
+logg = logging.getLogger()
+
+
+class TestSim(unittest.TestCase):
+
+    def setUp(self):
+        self.chain_spec = ChainSpec('evm', 'foochain', 42)
+        self.cap = 1000000000
+        settings = DemurrageTokenSettings()
+        settings.name = 'Simulated Demurrage Token'
+        settings.symbol = 'SIM'
+        settings.decimals = 6
+        settings.demurrage_level = 50
+        settings.period_minutes = 10800
+        self.sim = DemurrageTokenSimulation(self.chain_spec, settings, redistribute=True, cap=self.cap)
+
+
+    def test_hello(self):
+        pass
+
+if __name__ == '__main__':
+    unittest.main()