Add minter and burner python interface and test code

python/eth_burner/__init__.py

@@ -0,0 +1 @@
+from .burn import EthBurner

python/eth_burner/burn.py

@@ -0,0 +1,33 @@
+# 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 chainlib.eth.contract import abi_decode_single
+from hexathon import add_0x
+
+
+class EthBurner(TxFactory):
+
+    def burn(self, contract_address, sender_address, value, tx_format=TxFormat.JSONRPC):
+        enc = ABIContractEncoder()
+        enc.method('burn')
+        enc.typ(ABIContractType.UINT256)
+        enc.uint256(value)
+        data = enc.get()
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx
+
+
+    def burn_all(self, contract_address, sender_address, tx_format=TxFormat.JSONRPC):
+        enc = ABIContractEncoder()
+        enc.method('burn')
+        data = enc.get()
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx

python/eth_burner/unittest/__init__.py

@@ -0,0 +1 @@
+from .interface import TestEthBurnerInterface

python/eth_burner/unittest/base.py

@@ -0,0 +1,53 @@
+# standard imports
+import os
+import logging
+import datetime
+
+# 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_burner import EthBurner
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+contract_dir = os.path.join(script_dir, '..', '..', 'solidity')
+
+logg = logging.getLogger(__name__)
+
+
+class TestEthBurner(EthTesterCase):
+
+    def setUp(self):
+        super(TestEthBurner, self).setUp()
+
+        self.conn = RPCConnection.connect(self.chain_spec, 'default')
+        nonce_oracle = RPCNonceOracle(self.accounts[0], self.conn)
+
+        f = open(os.path.join(contract_dir, 'BurnerTest.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.initial_supply = 1024
+        enc = ABIContractEncoder()
+        enc = ABIContractEncoder()
+        enc.uint256(self.initial_supply)
+        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 burner test contract with hash {}'.format(r))

python/eth_burner/unittest/interface.py

@@ -0,0 +1,19 @@
+# external imports
+from chainlib.eth.tx import receipt
+from chainlib.eth.nonce import RPCNonceOracle
+
+# local imports
+from eth_burner import EthBurner
+
+
+class TestEthBurnerInterface:
+
+    def test_supply(self):
+        self.alice = self.accounts[1]
+        nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
+        c = EthBurner(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        (tx_hash, o) = c.burn(self.address, self.accounts[0], int(self.initial_supply / 2))
+        self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'],1)

python/eth_expire/unittest/base.py

@@ -13,9 +13,6 @@ 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')
 
@@ -27,8 +24,6 @@ class TestEthExpire(EthTesterCase):
     def setUp(self):
         super(TestEthExpire, self).setUp()
 
-        self.set_method = None
-
         self.conn = RPCConnection.connect(self.chain_spec, 'default')
         nonce_oracle = RPCNonceOracle(self.accounts[0], self.conn)
 

python/eth_minter/__init__.py

@@ -0,0 +1 @@
+from .minter import EthMinter

python/eth_minter/minter.py

@@ -0,0 +1,25 @@
+# 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 chainlib.eth.contract import abi_decode_single
+from hexathon import add_0x
+
+
+class EthMinter(TxFactory):
+
+    def mint_to(self, contract_address, sender_address, recipient_address, value, tx_format=TxFormat.JSONRPC):
+        enc = ABIContractEncoder()
+        enc.method('mintTo')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.UINT256)
+        enc.address(recipient_address)
+        enc.uint256(value)
+        data = enc.get()
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx

python/eth_minter/unittest/__init__.py

@@ -0,0 +1 @@
+from .interface import TestEthMinterInterface

python/eth_minter/unittest/base.py

@@ -0,0 +1,51 @@
+# standard imports
+import os
+import logging
+import datetime
+
+# 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_minter import EthMinter
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+contract_dir = os.path.join(script_dir, '..', '..', 'solidity')
+
+logg = logging.getLogger(__name__)
+
+
+class TestEthMinter(EthTesterCase):
+
+    def setUp(self):
+        super(TestEthMinter, self).setUp()
+
+        self.conn = RPCConnection.connect(self.chain_spec, 'default')
+        nonce_oracle = RPCNonceOracle(self.accounts[0], self.conn)
+
+        f = open(os.path.join(contract_dir, 'MinterTest.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.initial_supply = 1024
+        enc = ABIContractEncoder()
+        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 minter test contract with hash {}'.format(r))

python/eth_minter/unittest/interface.py

@@ -0,0 +1,19 @@
+# external imports
+from chainlib.eth.tx import receipt
+from chainlib.eth.nonce import RPCNonceOracle
+
+# local imports
+from eth_minter import EthMinter
+
+
+class TestEthMinterInterface:
+
+    def test_supply(self):
+        self.alice = self.accounts[1]
+        nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
+        c = EthMinter(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        (tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.alice, self.initial_supply)
+        self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'],1)

python/solidity/BurnerTest.bin

@@ -0,0 +1 @@
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python/solidity/BurnerTest.sol

@@ -0,0 +1,50 @@
+pragma solidity >=0.6.3;
+
+// Author:	Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
+// SPDX-License-Identifier:	AGPL-3.0-or-later
+
+contract MinterTest {
+	uint256 public totalMinted;
+	uint256 public totalBurned;
+	uint256 balance;
+	
+	event Burn(address indexed _burner, uint256 _burned);
+
+	constructor(uint256 _mintValue) {
+		totalMinted = _mintValue;
+		balance = _mintValue;
+	}
+
+	function burn(address _from, uint256 _value, bytes calldata _data) public {
+		_from;
+		_data;
+		burn(_value);
+	}
+
+	function burn(uint256 _value) public returns (bool) {
+		burnCore(_value);
+		return true;
+	}
+
+	function burnCore(uint256 _value) internal returns(uint256) {
+		require(balance - _value >= 0);
+		totalBurned += _value;
+		balance -= _value;
+		emit Burn(msg.sender, _value);
+		return _value;
+	}
+
+	function burn() public returns (uint256) {
+		return burnCore(totalMinted);
+	}
+
+	function supportsInterface(bytes4 _sum) public pure returns (bool) {
+		if (_sum == 0x01ffc9a7) { // EIP165
+			return true;
+		}
+		if (_sum == 0xbc4babdd) { // Burner
+			return true;
+		}
+		return false;
+	}
+}

python/solidity/ExpireTest.bin

@@ -1 +1 @@
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python/solidity/ExpireTest.sol

@@ -38,7 +38,7 @@ contract ExpireTest {
 		if (_sum == 0x01ffc9a7) { // EIP165
 			return true;
 		}
-		if (_sum == 0x841a0e94) { // Capped
+		if (_sum == 0x841a0e94) { // Expire
 			return true;
 		}
 		return false;

python/solidity/MinterTest.bin

@@ -0,0 +1 @@
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python/solidity/MinterTest.sol

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+pragma solidity >=0.6.3;
+
+// Author:	Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
+// SPDX-License-Identifier:	AGPL-3.0-or-later
+
+contract MinterTest {
+	mapping (address => uint256) public balance;
+		
+	event Mint(address indexed _minter, address indexed _beneficiary, uint256 _value);
+
+	function mintTo(address _beneficiary, uint256 _value) public returns (bool) {
+		balance[_beneficiary] += _value;	
+		emit Mint(msg.sender, _beneficiary, _value);
+		return true;
+	}
+
+	function mint(address _beneficiary, uint256 _value, bytes calldata _data) public {
+		_data;
+		mintTo(_beneficiary, _value);
+	}
+	function safeMint(address _beneficiary, uint256 _value, bytes calldata _data) public {
+		_data;
+		mintTo(_beneficiary, _value);
+	}
+
+	function supportsInterface(bytes4 _sum) public pure returns (bool) {
+		if (_sum == 0x01ffc9a7) { // EIP165
+			return true;
+		}
+		if (_sum == 0x5878bcf4) { // Minter
+			return true;
+		}
+		return false;
+	}
+}

python/tests/test_burner.py

@@ -0,0 +1,29 @@
+# standard imports
+import unittest
+import logging
+import os
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+from eth_erc20 import ERC20
+from giftable_erc20_token import GiftableToken
+from eth_interface.unittest import TestERC165
+
+# local imports
+from eth_burner import EthBurner
+from eth_burner.unittest import TestEthBurnerInterface
+from eth_burner.unittest.base import TestEthBurner
+
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+
+class TestBurnerBase(TestEthBurner, TestEthBurnerInterface, TestERC165):
+
+    def setUp(self):
+        super(TestBurnerBase, self).setUp()
+        self.add_interface_check('bc4babdd')
+
+
+if __name__ == '__main__':
+    unittest.main()

python/tests/test_minter.py

@@ -0,0 +1,29 @@
+# standard imports
+import unittest
+import logging
+import os
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+from eth_erc20 import ERC20
+from giftable_erc20_token import GiftableToken
+from eth_interface.unittest import TestERC165
+
+# local imports
+from eth_minter import EthMinter
+from eth_minter.unittest import TestEthMinterInterface
+from eth_minter.unittest.base import TestEthMinter
+
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+
+class TestMinterBase(TestEthMinter, TestEthMinterInterface, TestERC165):
+
+    def setUp(self):
+        super(TestMinterBase, self).setUp()
+        self.add_interface_check('5878bcf4')
+
+
+if __name__ == '__main__':
+    unittest.main()

solidity/Burner.sol

@@ -12,10 +12,11 @@ interface IBurner {
 	function burn(address _from, uint256 _amount, bytes calldata _data) external;
 
 	// Burn given amount of tokens held by signer.
-	function burn(uint256 _burn) external returns (bool);
+	function burn(uint256 _amount) external returns (bool);
 
 	// Burn all tokens held by signer.
-	function burn() external returns (bool);
+	// Returns the amount of tokens burned.
+	function burn() external returns (uint256);
 
 	// Total amount of tokens that have been burned.
 	function totalBurned() external returns (uint256);