Add capped interface, python interface and test for capped, expire

python/eth_capped/__init__.py

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+from .capped import EthCapped

python/eth_capped/capped.py

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+# external imports
+from chainlib.eth.tx import TxFormat
+from chainlib.eth.tx import TxFactory
+from chainlib.jsonrpc import JSONRPCRequest
+from chainlib.eth.constant import ZERO_ADDRESS
+from chainlib.eth.contract import ABIContractEncoder
+from chainlib.eth.contract import ABIContractType
+from hexathon import add_0x
+
+class EthCapped(TxFactory):
+
+    def max_supply(self, contract_address, sender_address=ZERO_ADDRESS, id_generator=None):
+        j = JSONRPCRequest(id_generator)
+        o = j.template()
+        o['method'] = 'eth_call'
+        enc = ABIContractEncoder()
+        enc.method('maxSupply')
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address)
+        tx = self.set_code(tx, data)
+        o['params'].append(self.normalize(tx))
+        return o

python/eth_capped/unittest/__init__.py

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+from .interface import TestEthCappedInterface

python/eth_capped/unittest/base.py

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+# standard imports
+import os
+import logging
+
+# external imports
+from chainlib.eth.unittest.ethtester import EthTesterCase
+from chainlib.connection import RPCConnection
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+from chainlib.eth.tx import TxFactory
+from chainlib.eth.tx import TxFormat
+from chainlib.eth.contract import ABIContractEncoder
+from chainlib.eth.contract import ABIContractType
+
+# local imports
+from eth_capped import EthCapped
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+contract_dir = os.path.join(script_dir, '..', '..', 'solidity')
+
+logg = logging.getLogger(__name__)
+
+
+class TestEthCapped(EthTesterCase):
+
+    def setUp(self):
+        super(TestEthCapped, self).setUp()
+
+        self.set_method = None
+
+        self.conn = RPCConnection.connect(self.chain_spec, 'default')
+        nonce_oracle = RPCNonceOracle(self.accounts[0], self.conn)
+
+        f = open(os.path.join(contract_dir, 'CappedTest.bin'))
+        code = f.read()
+        f.close()
+
+        txf = TxFactory(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        tx = txf.template(self.accounts[0], None, use_nonce=True)
+
+        self.max_supply_value = 1024
+        enc = ABIContractEncoder()
+        enc.uint256(self.max_supply_value)
+        args = enc.get()
+
+        tx = txf.set_code(tx, code + args)
+        (tx_hash_hex, o) = txf.build(tx)
+        self.conn.do(o)
+        o = receipt(tx_hash_hex)
+        r = self.conn.do(o)
+        self.assertEqual(r['status'], 1)
+        self.address = r['contract_address']
+        logg.debug('published capped test contract with hash {}'.format(r))
+
+
+    def set_max_supply(self, contract_address, sender_address, v, tx_format=TxFormat.JSONRPC):
+        nonce_oracle = RPCNonceOracle(self.accounts[0], self.conn)
+        txf = TxFactory(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        enc = ABIContractEncoder()
+        enc.method('setMaxSupply')
+        enc.typ(ABIContractType.UINT256)
+        enc.uint256(v)
+        data = enc.get()
+        tx = txf.template(sender_address, contract_address, use_nonce=True)
+        tx = txf.set_code(tx, data)
+        tx = txf.finalize(tx, tx_format)
+        return tx

python/eth_capped/unittest/interface.py

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+# external imports
+from chainlib.eth.tx import receipt
+
+# local imports
+from eth_capped import EthCapped
+
+
+class TestEthCappedInterface:
+
+    def __init__(self):
+        self.set_method = None
+        self.max_supply_value = 0
+
+
+    def test_supply(self):
+        if self.max_supply_value == 0:
+            return
+        c = EthCapped(self.chain_spec)
+        o = c.max_supply(self.address, sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        self.assertEqual(self.max_supply_value, int(r, 16))
+
+
+    def test_supply_change(self):
+        if self.set_method == None:
+            return
+
+        self.max_supply_value = 2048
+        (tx_hash_hex, o) = self.set_method(self.address, self.accounts[0], self.max_supply_value)
+        self.rpc.do(o)
+        o = receipt(tx_hash_hex)
+        r = self.conn.do(o)
+        self.assertEqual(r['status'], 1)
+
+        c = EthCapped(self.chain_spec)
+        o = c.max_supply(self.address, sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        self.assertEqual(self.max_supply_value, int(r, 16))