├── .gitignore ├── LICENSE ├── README.md ├── __init__.py ├── compile.py ├── fixtures ├── coztest.db3 ├── empty_fixture.tar.gz ├── testwallet.db3 ├── testwallet2.db3 └── testwallet3.db3 ├── ico_template.py ├── nex ├── __init__.py ├── crowdsale.py ├── nep5.py ├── token.py └── txio.py ├── requirements.txt ├── requirements_test.txt ├── setup.cfg ├── setup.py └── tests └── test_ico_template.py /.gitignore: -------------------------------------------------------------------------------- 1 | venv 2 | *.pyc 3 | *.avm 4 | .idea 5 | __pycache__ 6 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 |

2 | 5 | 6 |

7 |

Neo ICO Template

8 |

A template for NEP5 Compliant Tokens on the NEO platform

9 |
10 | 11 | #### Considerations 12 | 13 | An article describing this template is available here: 14 | 15 | https://medium.com/neon-exchange/nex-ico-template-4ca7ba19fc8b 16 | 17 | #### Requirements 18 | 19 | Usage requires Python 3.6+ 20 | 21 | 22 | #### Installation 23 | 24 | Clone the repository and navigate into the project directory. 25 | Make a Python 3 virtual environment and activate it via 26 | 27 | ```shell 28 | python3 -m venv venv 29 | source venv/bin/activate 30 | ``` 31 | 32 | or to explicitly install Python 3.6 via 33 | 34 | virtualenv -p /usr/local/bin/python3.6 venv 35 | source venv/bin/activate 36 | 37 | Then install the requirements via 38 | 39 | ```shell 40 | pip install -r requirements.txt 41 | ``` 42 | 43 | #### Compilation 44 | 45 | The template may be compiled as follows 46 | 47 | ```python 48 | from boa.compiler import Compiler 49 | 50 | Compiler.load_and_save('ico_template.py') 51 | ``` 52 | 53 | 54 | This will compile your template to `ico_template.avm` 55 | 56 | 57 | 58 | #### Running tests 59 | 60 | 1. Install `requirements_test.txt` 61 | 62 | ``` 63 | pip install -r requirements_test.txt 64 | 65 | ``` 66 | 67 | 2. Run tests 68 | 69 | ``` 70 | python -m unittest discover tests 71 | ``` 72 | 73 | #### Testnet Deployed Details 74 | 75 | For testing purposes, this template is deployed on testnet with the following contract script hash: 76 | 77 | `0b6c1f919e95fe61c17a7612aebfaf4fda3a2214` 78 | 79 | ```json 80 | { 81 | "code": { 82 | "parameters": "0710", 83 | "hash": "0b6c1f919e95fe61c17a7612aebfaf4fda3a2214", 84 | "returntype": 5, 85 | "script": ".. omitted .." 86 | }, 87 | "version": 0, 88 | "code_version": ".2", 89 | "name": "NEX Ico Template", 90 | "author": "localhuman", 91 | "description": "An ICO Template", 92 | "properties": { 93 | "dynamic_invoke": false, 94 | "storage": true 95 | }, 96 | "email": "tom@neonexchange.org" 97 | } 98 | ``` 99 | 100 | -------------------------------------------------------------------------------- /__init__.py: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nash-io/neo-ico-template/0ad1af882ea470c77570cce0d27c43c4e49ec3b9/__init__.py -------------------------------------------------------------------------------- /compile.py: -------------------------------------------------------------------------------- 1 | from boa.compiler import Compiler 2 | 3 | Compiler.load_and_save('ico_template.py') 4 | -------------------------------------------------------------------------------- /fixtures/coztest.db3: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nash-io/neo-ico-template/0ad1af882ea470c77570cce0d27c43c4e49ec3b9/fixtures/coztest.db3 -------------------------------------------------------------------------------- /fixtures/empty_fixture.tar.gz: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nash-io/neo-ico-template/0ad1af882ea470c77570cce0d27c43c4e49ec3b9/fixtures/empty_fixture.tar.gz -------------------------------------------------------------------------------- /fixtures/testwallet.db3: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nash-io/neo-ico-template/0ad1af882ea470c77570cce0d27c43c4e49ec3b9/fixtures/testwallet.db3 -------------------------------------------------------------------------------- /fixtures/testwallet2.db3: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nash-io/neo-ico-template/0ad1af882ea470c77570cce0d27c43c4e49ec3b9/fixtures/testwallet2.db3 -------------------------------------------------------------------------------- /fixtures/testwallet3.db3: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nash-io/neo-ico-template/0ad1af882ea470c77570cce0d27c43c4e49ec3b9/fixtures/testwallet3.db3 -------------------------------------------------------------------------------- /ico_template.py: -------------------------------------------------------------------------------- 1 | """ 2 | NEX ICO Template 3 | =================================== 4 | 5 | Author: Thomas Saunders 6 | Email: tom@neonexchange.org 7 | 8 | Date: Dec 11 2017 9 | 10 | """ 11 | from nex.txio import get_asset_attachments 12 | from nex.token import * 13 | from nex.crowdsale import * 14 | from nex.nep5 import * 15 | from boa.interop.Neo.Runtime import GetTrigger, CheckWitness 16 | from boa.interop.Neo.TriggerType import Application, Verification 17 | from boa.interop.Neo.Storage import * 18 | 19 | ctx = GetContext() 20 | NEP5_METHODS = ['name', 'symbol', 'decimals', 'totalSupply', 'balanceOf', 'transfer', 'transferFrom', 'approve', 'allowance'] 21 | 22 | 23 | def Main(operation, args): 24 | """ 25 | 26 | :param operation: str The name of the operation to perform 27 | :param args: list A list of arguments along with the operation 28 | :return: 29 | bytearray: The result of the operation 30 | """ 31 | 32 | trigger = GetTrigger() 33 | 34 | # This is used in the Verification portion of the contract 35 | # To determine whether a transfer of system assets ( NEO/Gas) involving 36 | # This contract's address can proceed 37 | if trigger == Verification(): 38 | 39 | # check if the invoker is the owner of this contract 40 | is_owner = CheckWitness(TOKEN_OWNER) 41 | 42 | # If owner, proceed 43 | if is_owner: 44 | 45 | return True 46 | 47 | # Otherwise, we need to lookup the assets and determine 48 | # If attachments of assets is ok 49 | attachments = get_asset_attachments() 50 | return can_exchange(ctx, attachments, True) 51 | 52 | elif trigger == Application(): 53 | 54 | for op in NEP5_METHODS: 55 | if operation == op: 56 | return handle_nep51(ctx, operation, args) 57 | 58 | if operation == 'deploy': 59 | return deploy() 60 | 61 | elif operation == 'circulation': 62 | return get_circulation(ctx) 63 | 64 | # the following are handled by crowdsale 65 | 66 | elif operation == 'mintTokens': 67 | return perform_exchange(ctx) 68 | 69 | elif operation == 'crowdsale_register': 70 | return kyc_register(ctx, args) 71 | 72 | elif operation == 'crowdsale_status': 73 | return kyc_status(ctx, args) 74 | 75 | elif operation == 'crowdsale_available': 76 | return crowdsale_available_amount(ctx) 77 | 78 | elif operation == 'get_attachments': 79 | return get_asset_attachments() 80 | 81 | return 'unknown operation' 82 | 83 | return False 84 | 85 | 86 | def deploy(): 87 | """ 88 | 89 | :param token: Token The token to deploy 90 | :return: 91 | bool: Whether the operation was successful 92 | """ 93 | if not CheckWitness(TOKEN_OWNER): 94 | print("Must be owner to deploy") 95 | return False 96 | 97 | if not Get(ctx, 'initialized'): 98 | # do deploy logic 99 | Put(ctx, 'initialized', 1) 100 | Put(ctx, TOKEN_OWNER, TOKEN_INITIAL_AMOUNT) 101 | return add_to_circulation(ctx, TOKEN_INITIAL_AMOUNT) 102 | 103 | return False 104 | -------------------------------------------------------------------------------- /nex/__init__.py: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nash-io/neo-ico-template/0ad1af882ea470c77570cce0d27c43c4e49ec3b9/nex/__init__.py -------------------------------------------------------------------------------- /nex/crowdsale.py: -------------------------------------------------------------------------------- 1 | from boa.interop.Neo.Blockchain import GetHeight 2 | from boa.interop.Neo.Runtime import CheckWitness 3 | from boa.interop.Neo.Action import RegisterAction 4 | from boa.interop.Neo.Storage import Get, Put 5 | from boa.builtins import concat 6 | from nex.token import * 7 | from nex.txio import get_asset_attachments 8 | 9 | # OnInvalidKYCAddress = RegisterAction('invalid_registration', 'address') 10 | OnKYCRegister = RegisterAction('kyc_registration', 'address') 11 | OnTransfer = RegisterAction('transfer', 'addr_from', 'addr_to', 'amount') 12 | OnRefund = RegisterAction('refund', 'addr_to', 'amount') 13 | 14 | 15 | def kyc_register(ctx, args): 16 | """ 17 | 18 | :param args:list a list of addresses to register 19 | :param token:Token A token object with your ICO settings 20 | :return: 21 | int: The number of addresses to register for KYC 22 | """ 23 | ok_count = 0 24 | 25 | if CheckWitness(TOKEN_OWNER): 26 | 27 | for address in args: 28 | 29 | if len(address) == 20: 30 | 31 | kyc_storage_key = concat(KYC_KEY, address) 32 | Put(ctx, kyc_storage_key, True) 33 | 34 | OnKYCRegister(address) 35 | ok_count += 1 36 | 37 | return ok_count 38 | 39 | 40 | def kyc_status(ctx, args): 41 | """ 42 | Gets the KYC Status of an address 43 | 44 | :param args:list a list of arguments 45 | :return: 46 | bool: Returns the kyc status of an address 47 | """ 48 | 49 | if len(args) > 0: 50 | addr = args[0] 51 | 52 | kyc_storage_key = concat(KYC_KEY, addr) 53 | 54 | return Get(ctx, kyc_storage_key) 55 | 56 | return False 57 | 58 | 59 | def perform_exchange(ctx): 60 | """ 61 | 62 | :param token:Token The token object with NEP5/sale settings 63 | :return: 64 | bool: Whether the exchange was successful 65 | """ 66 | 67 | attachments = get_asset_attachments() # [receiver, sender, neo, gas] 68 | 69 | # this looks up whether the exchange can proceed 70 | exchange_ok = can_exchange(ctx, attachments, False) 71 | 72 | if not exchange_ok: 73 | # This should only happen in the case that there are a lot of TX on the final 74 | # block before the total amount is reached. An amount of TX will get through 75 | # the verification phase because the total amount cannot be updated during that phase 76 | # because of this, there should be a process in place to manually refund tokens 77 | if attachments[2] > 0: 78 | OnRefund(attachments[1], attachments[2]) 79 | # if you want to exchange gas instead of neo, use this 80 | # if attachments.gas_attached > 0: 81 | # OnRefund(attachments.sender_addr, attachments.gas_attached) 82 | return False 83 | 84 | # lookup the current balance of the address 85 | current_balance = Get(ctx, attachments[1]) 86 | 87 | # calculate the amount of tokens the attached neo will earn 88 | exchanged_tokens = attachments[2] * TOKENS_PER_NEO / 100000000 89 | 90 | # if you want to exchange gas instead of neo, use this 91 | # exchanged_tokens += attachments[3] * TOKENS_PER_GAS / 100000000 92 | 93 | # add it to the the exchanged tokens and persist in storage 94 | new_total = exchanged_tokens + current_balance 95 | Put(ctx, attachments[1], new_total) 96 | 97 | # update the in circulation amount 98 | result = add_to_circulation(ctx, exchanged_tokens) 99 | 100 | # dispatch transfer event 101 | OnTransfer(attachments[0], attachments[1], exchanged_tokens) 102 | 103 | return True 104 | 105 | 106 | def can_exchange(ctx, attachments, verify_only): 107 | """ 108 | Determines if the contract invocation meets all requirements for the ICO exchange 109 | of neo or gas into NEP5 Tokens. 110 | Note: This method can be called via both the Verification portion of an SC or the Application portion 111 | 112 | When called in the Verification portion of an SC, it can be used to reject TX that do not qualify 113 | for exchange, thereby reducing the need for manual NEO or GAS refunds considerably 114 | 115 | :param attachments:Attachments An attachments object with information about attached NEO/Gas assets 116 | :return: 117 | bool: Whether an invocation meets requirements for exchange 118 | """ 119 | 120 | # if you are accepting gas, use this 121 | # if attachments[3] == 0: 122 | # print("no gas attached") 123 | # return False 124 | 125 | # if youre accepting neo, use this 126 | 127 | if attachments[2] == 0: 128 | return False 129 | 130 | # the following looks up whether an address has been 131 | # registered with the contract for KYC regulations 132 | # this is not required for operation of the contract 133 | 134 | # status = get_kyc_status(attachments.sender_addr, storage) 135 | if not get_kyc_status(ctx, attachments[1]): 136 | return False 137 | 138 | # caluclate the amount requested 139 | amount_requested = attachments[2] * TOKENS_PER_NEO / 100000000 140 | 141 | # this would work for accepting gas 142 | # amount_requested = attachments.gas_attached * token.tokens_per_gas / 100000000 143 | 144 | exchange_ok = calculate_can_exchange(ctx, amount_requested, attachments[1], verify_only) 145 | 146 | return exchange_ok 147 | 148 | 149 | def get_kyc_status(ctx, address): 150 | """ 151 | Looks up the KYC status of an address 152 | 153 | :param address:bytearray The address to lookup 154 | :param storage:StorageAPI A StorageAPI object for storage interaction 155 | :return: 156 | bool: KYC Status of address 157 | """ 158 | kyc_storage_key = concat(KYC_KEY, address) 159 | 160 | return Get(ctx, kyc_storage_key) 161 | 162 | 163 | def calculate_can_exchange(ctx, amount, address, verify_only): 164 | """ 165 | Perform custom token exchange calculations here. 166 | 167 | :param amount:int Number of tokens to convert from asset to tokens 168 | :param address:bytearray The address to mint the tokens to 169 | :return: 170 | bool: Whether or not an address can exchange a specified amount 171 | """ 172 | height = GetHeight() 173 | 174 | current_in_circulation = Get(ctx, TOKEN_CIRC_KEY) 175 | 176 | new_amount = current_in_circulation + amount 177 | 178 | if new_amount > TOKEN_TOTAL_SUPPLY: 179 | return False 180 | 181 | if height < BLOCK_SALE_START: 182 | return False 183 | 184 | # if we are in free round, any amount 185 | if height > LIMITED_ROUND_END: 186 | return True 187 | 188 | # check amount in limited round 189 | if amount <= MAX_EXCHANGE_LIMITED_ROUND: 190 | 191 | # check if they have already exchanged in the limited round 192 | r1key = concat(address, LIMITED_ROUND_KEY) 193 | has_exchanged = Get(ctx, r1key) 194 | 195 | # if not, then save the exchange for limited round 196 | if not has_exchanged: 197 | # note that this method can be invoked during the Verification trigger, so we have the 198 | # verify_only param to avoid the Storage.Put during the read-only Verification trigger. 199 | # this works around a "method Neo.Storage.Put not found in ->" error in InteropService.py 200 | # since Verification is read-only and thus uses a StateReader, not a StateMachine 201 | if not verify_only: 202 | Put(ctx, r1key, True) 203 | return True 204 | 205 | return False 206 | 207 | return False 208 | -------------------------------------------------------------------------------- /nex/nep5.py: -------------------------------------------------------------------------------- 1 | from boa.interop.Neo.Runtime import CheckWitness, Notify 2 | from boa.interop.Neo.Action import RegisterAction 3 | from boa.interop.Neo.Storage import * 4 | from boa.builtins import concat 5 | 6 | from nex.token import * 7 | 8 | 9 | OnTransfer = RegisterAction('transfer', 'addr_from', 'addr_to', 'amount') 10 | OnApprove = RegisterAction('approve', 'addr_from', 'addr_to', 'amount') 11 | 12 | 13 | def handle_nep51(ctx, operation, args): 14 | 15 | if operation == 'name': 16 | return TOKEN_NAME 17 | 18 | elif operation == 'decimals': 19 | return TOKEN_DECIMALS 20 | 21 | elif operation == 'symbol': 22 | return TOKEN_SYMBOL 23 | 24 | elif operation == 'totalSupply': 25 | return Get(ctx, TOKEN_CIRC_KEY) 26 | 27 | elif operation == 'balanceOf': 28 | if len(args) == 1: 29 | return Get(ctx, args[0]) 30 | 31 | elif operation == 'transfer': 32 | if len(args) == 3: 33 | return do_transfer(ctx, args[0], args[1], args[2]) 34 | 35 | elif operation == 'transferFrom': 36 | if len(args) == 3: 37 | return do_transfer_from(ctx, args[0], args[1], args[2]) 38 | 39 | elif operation == 'approve': 40 | if len(args) == 3: 41 | return do_approve(ctx, args[0], args[1], args[2]) 42 | 43 | elif operation == 'allowance': 44 | if len(args) == 2: 45 | return do_allowance(ctx, args[0], args[1]) 46 | 47 | return False 48 | 49 | 50 | def do_transfer(ctx, t_from, t_to, amount): 51 | 52 | if amount <= 0: 53 | return False 54 | 55 | if len(t_to) != 20: 56 | return False 57 | 58 | if CheckWitness(t_from): 59 | 60 | from_val = Get(ctx, t_from) 61 | 62 | if from_val < amount: 63 | print("insufficient funds") 64 | return False 65 | 66 | if t_from == t_to: 67 | print("transfer to self!") 68 | return True 69 | 70 | if from_val == amount: 71 | Delete(ctx, t_from) 72 | 73 | else: 74 | difference = from_val - amount 75 | Put(ctx, t_from, difference) 76 | 77 | to_value = Get(ctx, t_to) 78 | 79 | to_total = to_value + amount 80 | 81 | Put(ctx, t_to, to_total) 82 | 83 | OnTransfer(t_from, t_to, amount) 84 | 85 | return True 86 | else: 87 | print("from address is not the tx sender") 88 | 89 | return False 90 | 91 | 92 | def do_transfer_from(ctx, t_from, t_to, amount): 93 | 94 | if amount <= 0: 95 | return False 96 | 97 | available_key = concat(t_from, t_to) 98 | 99 | if len(available_key) != 40: 100 | return False 101 | 102 | available_to_to_addr = Get(ctx, available_key) 103 | 104 | if available_to_to_addr < amount: 105 | print("Insufficient funds approved") 106 | return False 107 | 108 | from_balance = Get(ctx, t_from) 109 | 110 | if from_balance < amount: 111 | print("Insufficient tokens in from balance") 112 | return False 113 | 114 | to_balance = Get(ctx, t_to) 115 | 116 | new_from_balance = from_balance - amount 117 | 118 | new_to_balance = to_balance + amount 119 | 120 | Put(ctx, t_to, new_to_balance) 121 | Put(ctx, t_from, new_from_balance) 122 | 123 | print("transfer complete") 124 | 125 | new_allowance = available_to_to_addr - amount 126 | 127 | if new_allowance == 0: 128 | print("removing all balance") 129 | Delete(ctx, available_key) 130 | else: 131 | print("updating allowance to new allowance") 132 | Put(ctx, available_key, new_allowance) 133 | 134 | OnTransfer(t_from, t_to, amount) 135 | 136 | return True 137 | 138 | 139 | def do_approve(ctx, t_owner, t_spender, amount): 140 | 141 | if len(t_spender) != 20: 142 | return False 143 | 144 | if not CheckWitness(t_owner): 145 | return False 146 | 147 | if amount < 0: 148 | return False 149 | 150 | # cannot approve an amount that is 151 | # currently greater than the from balance 152 | if Get(ctx, t_owner) >= amount: 153 | 154 | approval_key = concat(t_owner, t_spender) 155 | 156 | if amount == 0: 157 | Delete(ctx, approval_key) 158 | else: 159 | Put(ctx, approval_key, amount) 160 | 161 | OnApprove(t_owner, t_spender, amount) 162 | 163 | return True 164 | 165 | return False 166 | 167 | 168 | def do_allowance(ctx, t_owner, t_spender): 169 | 170 | return Get(ctx, concat(t_owner, t_spender)) 171 | -------------------------------------------------------------------------------- /nex/token.py: -------------------------------------------------------------------------------- 1 | """ 2 | Basic settings for an NEP5 Token and crowdsale 3 | """ 4 | 5 | from boa.interop.Neo.Storage import * 6 | 7 | TOKEN_NAME = 'NEX Template V2' 8 | 9 | TOKEN_SYMBOL = 'NXT2' 10 | 11 | TOKEN_DECIMALS = 8 12 | 13 | # This is the script hash of the address for the owner of the token 14 | # This can be found in ``neo-python`` with the walet open, use ``wallet`` command 15 | TOKEN_OWNER = b'S\xefB\xc8\xdf!^\xbeZ|z\xe8\x01\xcb\xc3\xac/\xacI)' 16 | 17 | TOKEN_CIRC_KEY = b'in_circulation' 18 | 19 | TOKEN_TOTAL_SUPPLY = 10000000 * 100000000 # 10m total supply * 10^8 ( decimals) 20 | 21 | TOKEN_INITIAL_AMOUNT = 2500000 * 100000000 # 2.5m to owners * 10^8 22 | 23 | # for now assume 1 dollar per token, and one neo = 40 dollars * 10^8 24 | TOKENS_PER_NEO = 40 * 100000000 25 | 26 | # for now assume 1 dollar per token, and one gas = 20 dollars * 10^8 27 | TOKENS_PER_GAS = 20 * 100000000 28 | 29 | # maximum amount you can mint in the limited round ( 500 neo/person * 40 Tokens/NEO * 10^8 ) 30 | MAX_EXCHANGE_LIMITED_ROUND = 500 * 40 * 100000000 31 | 32 | # when to start the crowdsale 33 | BLOCK_SALE_START = 755000 34 | 35 | # when to end the initial limited round 36 | LIMITED_ROUND_END = 755000 + 10000 37 | 38 | KYC_KEY = b'kyc_ok' 39 | 40 | LIMITED_ROUND_KEY = b'r1' 41 | 42 | 43 | def crowdsale_available_amount(ctx): 44 | """ 45 | 46 | :return: int The amount of tokens left for sale in the crowdsale 47 | """ 48 | 49 | in_circ = Get(ctx, TOKEN_CIRC_KEY) 50 | 51 | available = TOKEN_TOTAL_SUPPLY - in_circ 52 | 53 | return available 54 | 55 | 56 | def add_to_circulation(ctx, amount): 57 | """ 58 | Adds an amount of token to circlulation 59 | 60 | :param amount: int the amount to add to circulation 61 | """ 62 | 63 | current_supply = Get(ctx, TOKEN_CIRC_KEY) 64 | 65 | current_supply += amount 66 | Put(ctx, TOKEN_CIRC_KEY, current_supply) 67 | return True 68 | 69 | 70 | def get_circulation(ctx): 71 | """ 72 | Get the total amount of tokens in circulation 73 | 74 | :return: 75 | int: Total amount in circulation 76 | """ 77 | return Get(ctx, TOKEN_CIRC_KEY) 78 | -------------------------------------------------------------------------------- /nex/txio.py: -------------------------------------------------------------------------------- 1 | from boa.interop.System.ExecutionEngine import GetScriptContainer, GetExecutingScriptHash 2 | from boa.interop.Neo.Transaction import Transaction, GetReferences, GetOutputs, GetUnspentCoins 3 | from boa.interop.Neo.Output import GetValue, GetAssetId, GetScriptHash 4 | 5 | 6 | neo_asset_id = b'\x9b|\xff\xda\xa6t\xbe\xae\x0f\x93\x0e\xbe`\x85\xaf\x90\x93\xe5\xfeV\xb3J\\"\x0c\xcd\xcfn\xfc3o\xc5' 7 | 8 | gas_asset_id = b'\xe7-(iy\xeel\xb1\xb7\xe6]\xfd\xdf\xb2\xe3\x84\x10\x0b\x8d\x14\x8ewX\xdeB\xe4\x16\x8bqy,`' 9 | 10 | 11 | def get_asset_attachments(): 12 | """ 13 | Gets information about NEO and Gas attached to an invocation TX 14 | 15 | :return: 16 | list: A list with information about attached neo and gas 17 | """ 18 | 19 | tx = GetScriptContainer() 20 | references = tx.References 21 | 22 | receiver_addr = GetExecutingScriptHash() 23 | sender_addr = None 24 | sent_amount_neo = 0 25 | sent_amount_gas = 0 26 | 27 | if len(references) > 0: 28 | 29 | reference = references[0] 30 | sender_addr = reference.ScriptHash 31 | for output in tx.Outputs: 32 | if output.ScriptHash == receiver_addr: 33 | if output.AssetId == neo_asset_id: 34 | sent_amount_neo += output.Value 35 | if output.AssetId == gas_asset_id: 36 | sent_amount_gas += output.Value 37 | 38 | return [receiver_addr, sender_addr, sent_amount_neo, sent_amount_gas] 39 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | autopep8==1.3.3 2 | bytecode==0.5 3 | neo-boa==0.3.7 4 | pycodestyle==2.3.1 5 | -------------------------------------------------------------------------------- /requirements_test.txt: -------------------------------------------------------------------------------- 1 | asn1crypto==0.24.0 2 | attrs==17.4.0 3 | Automat==0.6.0 4 | autopep8==1.3.4 5 | base58==0.2.5 6 | bitcoin==1.1.42 7 | blessings==1.6.1 8 | bpython==0.17.1 9 | bumpversion==0.5.3 10 | bytecode==0.5 11 | certifi==2018.1.18 12 | cffi==1.11.4 13 | chardet==3.0.4 14 | colorlog==3.1.2 15 | constantly==15.1.0 16 | coverage==4.5.1 17 | coveralls==1.2.0 18 | cryptography==2.1.4 19 | curtsies==0.3.0 20 | cycler==0.10.0 21 | docopt==0.6.2 22 | ecdsa==0.13 23 | Events==0.3 24 | gevent==1.2.2 25 | greenlet==0.4.13 26 | hyperlink==18.0.0 27 | idna==2.6 28 | incremental==17.5.0 29 | klein==17.10.0 30 | logzero==1.3.1 31 | memory-profiler==0.52.0 32 | mmh3==2.5.1 33 | mock==2.0.0 34 | mpmath==1.0.0 35 | neo-boa==0.3.7 36 | -e git+https://github.com/CityOfZion/neo-python.git@99727d2622198c5bb1e64868780482e5b5dd043d#egg=neo_python 37 | neo-python-rpc==0.1.8 38 | neocore==0.3.6 39 | numpy==1.14.1 40 | pbr==3.1.1 41 | peewee==2.10.2 42 | pluggy==0.6.0 43 | plyvel==1.0.4 44 | prompt-toolkit==1.0.15 45 | psutil==5.4.3 46 | py==1.5.2 47 | pycodestyle==2.3.1 48 | pycparser==2.18 49 | pycrypto==2.6.1 50 | Pygments==2.2.0 51 | pymitter==0.2.3 52 | Pympler==0.5 53 | pyparsing==2.2.0 54 | python-dateutil==2.6.1 55 | pytz==2018.3 56 | requests==2.18.4 57 | scrypt==0.8.6 58 | six==1.11.0 59 | tqdm==4.19.5 60 | Twisted==17.9.0 61 | typing==3.6.4 62 | urllib3==1.22 63 | virtualenv==15.1.0 64 | wcwidth==0.1.7 65 | Werkzeug==0.14.1 66 | zope.interface==4.4.3 67 | -------------------------------------------------------------------------------- /setup.cfg: -------------------------------------------------------------------------------- 1 | [pycodestyle] 2 | ignore = E721,E402,W291,E741 3 | max-line-length=256 4 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | 3 | # Always prefer setuptools over distutils 4 | from setuptools import setup, find_packages 5 | # To use a consistent encoding 6 | from codecs import open 7 | from os import path 8 | 9 | here = path.abspath(path.dirname(__file__)) 10 | 11 | # Get the long description from the README file 12 | with open(path.join(here, 'README.md'), encoding='utf-8') as f: 13 | long_description = f.read() 14 | 15 | 16 | setup( 17 | name='neo-ico-template', 18 | 19 | # Versions should comply with PEP440. For a discussion on single-sourcing 20 | # the version across setup.py and the project code, see 21 | # https://packaging.python.org/en/latest/single_source_version.html 22 | version='0.2.0', 23 | 24 | description='A Python Template for an NEP5 Token', 25 | long_description=long_description, 26 | 27 | # The project's main homepage. 28 | url='https://github.com/neonexchange/neo-ico-template', 29 | 30 | # Author details 31 | author='Thomas Saunders', 32 | author_email='tom@neonexchange.org', 33 | 34 | # Choose your license 35 | license='GPL3', 36 | 37 | # See https://pypi.python.org/pypi?%3Aaction=list_classifiers 38 | classifiers=[ 39 | # How mature is this project? Common values are 40 | # 3 - Alpha 41 | # 4 - Beta 42 | # 5 - Production/Stable 43 | 'Development Status :: 3 - Alpha', 44 | 45 | # Indicate who your project is intended for 46 | 'Intended Audience :: Developers', 47 | 'Topic :: Software Development :: Build Tools', 48 | 49 | # Pick your license as you wish (should match "license" above) 50 | 'License :: OSI Approved :: MIT License', 51 | 52 | # Specify the Python versions you support here. In particular, ensure 53 | # that you indicate whether you support Python 2, Python 3 or both. 54 | 'Programming Language :: Python :: 3.6', 55 | 'Programming Language :: Python :: 3.7', 56 | ], 57 | 58 | # What does your project relate to? 59 | keywords='NEP5 ICO Token NEO .avm blockchain development dApp', 60 | 61 | # You can just specify the packages manually here if your project is 62 | # simple. Or you can use find_packages(). 63 | # packages=find_packages(exclude=['contrib', 'docs', 'tests']), 64 | 65 | # Alternatively, if you want to distribute just a my_module.py, uncomment 66 | # this: 67 | py_modules=["nex"], 68 | 69 | # List run-time dependencies here. These will be installed by pip when 70 | # your project is installed. For an analysis of "install_requires" vs pip's 71 | # requirements files see: 72 | # https://packaging.python.org/en/latest/requirements.html 73 | install_requires=['neo-boa',], 74 | 75 | 76 | python_requires='>=3.4, <3.6', 77 | 78 | # List additional groups of dependencies here (e.g. development 79 | # dependencies). You can install these using the following syntax, 80 | # for example: 81 | # $ pip install -e .[dev,test] 82 | extras_require={ 83 | 'dev': ['twine','wheel','sphinx','autopep8','pep8','sphinx-rtd-theme'], 84 | 'test': ['coverage'], 85 | }, 86 | 87 | # If there are data files included in your packages that need to be 88 | # installed, specify them here. If using Python 2.6 or less, then these 89 | # have to be included in MANIFEST.in as well. 90 | #package_data={ 91 | # 'sample': ['package_data.dat'], 92 | #}, 93 | 94 | # Although 'package_data' is the preferred approach, in some case you may 95 | # need to place data files outside of your packages. See: 96 | # http://docs.python.org/3.4/distutils/setupscript.html#installing-additional-files # noqa 97 | # In this case, 'data_file' will be installed into '/my_data' 98 | #data_files=[('my_data', ['data/data_file'])], 99 | 100 | # To provide executable scripts, use entry points in preference to the 101 | # "scripts" keyword. Entry points provide cross-platform support and allow 102 | # pip to create the appropriate form of executable for the target platform. 103 | #entry_points={ 104 | # 'console_scripts': [ 105 | # 'sample=sample:main', 106 | # ], 107 | #}, 108 | ) -------------------------------------------------------------------------------- /tests/test_ico_template.py: -------------------------------------------------------------------------------- 1 | from boa_test.tests.boa_test import BoaFixtureTest 2 | from boa.compiler import Compiler 3 | from neo.Core.TX.Transaction import Transaction 4 | from neo.Prompt.Commands.BuildNRun import TestBuild 5 | from neo.EventHub import events 6 | from neo.SmartContract.SmartContractEvent import SmartContractEvent, NotifyEvent 7 | from neo.Settings import settings 8 | from neo.Prompt.Utils import parse_param 9 | from neo.Core.FunctionCode import FunctionCode 10 | from neocore.Fixed8 import Fixed8 11 | from boa_test.example.demo.nex.token import * 12 | 13 | import shutil 14 | import os 15 | 16 | settings.USE_DEBUG_STORAGE = True 17 | settings.DEBUG_STORAGE_PATH = './fixtures/debugstorage' 18 | 19 | 20 | class TestContract(BoaFixtureTest): 21 | 22 | dispatched_events = [] 23 | dispatched_logs = [] 24 | 25 | @classmethod 26 | def tearDownClass(cls): 27 | super(BoaFixtureTest, cls).tearDownClass() 28 | 29 | try: 30 | if os.path.exists(settings.DEBUG_STORAGE_PATH): 31 | shutil.rmtree(settings.DEBUG_STORAGE_PATH) 32 | except Exception as e: 33 | print("couldn't remove debug storage %s " % e) 34 | 35 | @classmethod 36 | def setUpClass(cls): 37 | super(TestContract, cls).setUpClass() 38 | 39 | cls.dirname = '/'.join(os.path.abspath(__file__).split('/')[:-2]) 40 | 41 | def on_notif(evt): 42 | print(evt) 43 | cls.dispatched_events.append(evt) 44 | print("dispatched events %s " % cls.dispatched_events) 45 | 46 | def on_log(evt): 47 | print(evt) 48 | cls.dispatched_logs.append(evt) 49 | events.on(SmartContractEvent.RUNTIME_NOTIFY, on_notif) 50 | events.on(SmartContractEvent.RUNTIME_LOG, on_log) 51 | 52 | def test_ICOTemplate_1(self): 53 | 54 | output = Compiler.instance().load('%s/ico_template.py' % TestContract.dirname).default 55 | out = output.write() 56 | # print(output.to_s()) 57 | 58 | tx, results, total_ops, engine = TestBuild(out, ['name', '[]'], self.GetWallet1(), '0705', '05') 59 | self.assertEqual(len(results), 1) 60 | self.assertEqual(results[0].GetString(), TOKEN_NAME) 61 | 62 | tx, results, total_ops, engine = TestBuild(out, ['symbol', '[]'], self.GetWallet1(), '0705', '05') 63 | self.assertEqual(len(results), 1) 64 | self.assertEqual(results[0].GetString(), TOKEN_SYMBOL) 65 | 66 | tx, results, total_ops, engine = TestBuild(out, ['decimals', '[]'], self.GetWallet1(), '0705', '05') 67 | self.assertEqual(len(results), 1) 68 | self.assertEqual(results[0].GetBigInteger(), TOKEN_DECIMALS) 69 | 70 | tx, results, total_ops, engine = TestBuild(out, ['totalSupply', '[]'], self.GetWallet1(), '0705', '05') 71 | self.assertEqual(len(results), 1) 72 | self.assertEqual(results[0].GetBigInteger(), 0) 73 | 74 | tx, results, total_ops, engine = TestBuild(out, ['nonexistentmethod', '[]'], self.GetWallet1(), '0705', '05') 75 | self.assertEqual(len(results), 1) 76 | self.assertEqual(results[0].GetString(), 'unknown operation') 77 | 78 | # deploy with wallet 2 should fail CheckWitness 79 | tx, results, total_ops, engine = TestBuild(out, ['deploy', '[]'], self.GetWallet2(), '0705', '05') 80 | self.assertEqual(len(results), 1) 81 | self.assertEqual(results[0].GetBoolean(), False) 82 | 83 | tx, results, total_ops, engine = TestBuild(out, ['deploy', '[]'], self.GetWallet1(), '0705', '05') 84 | self.assertEqual(len(results), 1) 85 | self.assertEqual(results[0].GetBoolean(), True) 86 | 87 | # second time, it should already be deployed and return false 88 | tx, results, total_ops, engine = TestBuild(out, ['deploy', '[]'], self.GetWallet1(), '0705', '05') 89 | self.assertEqual(len(results), 1) 90 | self.assertEqual(results[0].GetBoolean(), False) 91 | 92 | # now total supply should be equal to the initial owner amount 93 | tx, results, total_ops, engine = TestBuild(out, ['totalSupply', '[]'], self.GetWallet1(), '0705', '05') 94 | self.assertEqual(len(results), 1) 95 | self.assertEqual(results[0].GetBigInteger(), TOKEN_INITIAL_AMOUNT) 96 | 97 | # now the owner should have a balance of the TOKEN_INITIAL_AMOUNT 98 | tx, results, total_ops, engine = TestBuild(out, ['balanceOf', parse_param([bytearray(TOKEN_OWNER)])], self.GetWallet1(), '0705', '05') 99 | self.assertEqual(len(results), 1) 100 | self.assertEqual(results[0].GetBigInteger(), TOKEN_INITIAL_AMOUNT) 101 | 102 | def test_ICOTemplate_2(self): 103 | 104 | output = Compiler.instance().load('%s/ico_template.py' % TestContract.dirname).default 105 | out = output.write() 106 | 107 | # now transfer tokens to wallet 2 108 | 109 | TestContract.dispatched_events = [] 110 | 111 | test_transfer_amount = 2400000001 112 | tx, results, total_ops, engine = TestBuild(out, ['transfer', parse_param([bytearray(TOKEN_OWNER), self.wallet_2_script_hash.Data, test_transfer_amount])], self.GetWallet1(), '0705', '05') 113 | self.assertEqual(len(results), 1) 114 | self.assertEqual(results[0].GetBoolean(), True) 115 | 116 | self.assertEqual(len(TestContract.dispatched_events), 1) 117 | evt = TestContract.dispatched_events[0] 118 | self.assertIsInstance(evt, NotifyEvent) 119 | self.assertEqual(evt.addr_from.Data, bytearray(TOKEN_OWNER)) 120 | self.assertEqual(evt.addr_to, self.wallet_2_script_hash) 121 | self.assertEqual(evt.amount, test_transfer_amount) 122 | 123 | # now get balance of wallet 2 124 | tx, results, total_ops, engine = TestBuild(out, ['balanceOf', parse_param([self.wallet_2_script_hash.Data])], self.GetWallet1(), '0705', '05') 125 | self.assertEqual(len(results), 1) 126 | self.assertEqual(results[0].GetBigInteger(), test_transfer_amount) 127 | 128 | # now the owner should have less 129 | tx, results, total_ops, engine = TestBuild(out, ['balanceOf', parse_param([bytearray(TOKEN_OWNER)])], self.GetWallet1(), '0705', '05') 130 | self.assertEqual(len(results), 1) 131 | self.assertEqual(results[0].GetBigInteger(), TOKEN_INITIAL_AMOUNT - test_transfer_amount) 132 | 133 | # now this transfer should fail 134 | tx, results, total_ops, engine = TestBuild(out, ['transfer', parse_param([bytearray(TOKEN_OWNER), self.wallet_2_script_hash.Data, TOKEN_INITIAL_AMOUNT])], self.GetWallet1(), '0705', '05') 135 | self.assertEqual(len(results), 1) 136 | self.assertEqual(results[0].GetBoolean(), False) 137 | 138 | # this transfer should fail because it is not signed by the 'from' address 139 | tx, results, total_ops, engine = TestBuild(out, ['transfer', parse_param([bytearray(TOKEN_OWNER), self.wallet_2_script_hash.Data, 10000])], self.GetWallet3(), '0705', '05') 140 | self.assertEqual(len(results), 1) 141 | self.assertEqual(results[0].GetBoolean(), False) 142 | 143 | # now this transfer should fail, this is from address with no tokens 144 | tx, results, total_ops, engine = TestBuild(out, ['transfer', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data, 1000])], self.GetWallet3(), '0705', '05') 145 | self.assertEqual(len(results), 1) 146 | self.assertEqual(results[0].GetBoolean(), False) 147 | 148 | # get balance of bad data 149 | tx, results, total_ops, engine = TestBuild(out, ['balanceOf', parse_param(['abc'])], self.GetWallet1(), '0705', '05') 150 | self.assertEqual(len(results), 1) 151 | self.assertEqual(results[0].GetBigInteger(), 0) 152 | 153 | # get balance no params 154 | tx, results, total_ops, engine = TestBuild(out, ['balanceOf', parse_param([])], self.GetWallet1(), '0705', '05') 155 | self.assertEqual(len(results), 1) 156 | self.assertEqual(results[0].GetBoolean(), False) 157 | 158 | def test_ICOTemplate_3_KYC(self): 159 | 160 | output = Compiler.instance().load('%s/ico_template.py' % TestContract.dirname).default 161 | out = output.write() 162 | print(output.to_s()) 163 | # now transfer tokens to wallet 2 164 | 165 | TestContract.dispatched_events = [] 166 | 167 | # test mint tokens without being kyc verified 168 | tx, results, total_ops, engine = TestBuild(out, ['mintTokens', '[]', '--attach-neo=10'], self.GetWallet3(), '0705', '05') 169 | self.assertEqual(len(results), 1) 170 | self.assertEqual(results[0].GetBoolean(), False) 171 | 172 | # Try to register as a non owner 173 | tx, results, total_ops, engine = TestBuild(out, ['crowdsale_register', parse_param([self.wallet_3_script_hash.Data])], self.GetWallet3(), '0705', '05') 174 | self.assertEqual(len(results), 1) 175 | self.assertEqual(results[0].GetBoolean(), False) 176 | 177 | # Get status of non registered address 178 | tx, results, total_ops, engine = TestBuild(out, ['crowdsale_status', parse_param([self.wallet_3_script_hash.Data])], self.GetWallet3(), '0705', '05') 179 | self.assertEqual(len(results), 1) 180 | self.assertEqual(results[0].GetBoolean(), False) 181 | 182 | TestContract.dispatched_events = [] 183 | 184 | # register an address 185 | tx, results, total_ops, engine = TestBuild(out, ['crowdsale_register', parse_param([self.wallet_3_script_hash.Data])], self.GetWallet1(), '0705', '05') 186 | self.assertEqual(len(results), 1) 187 | self.assertEqual(results[0].GetBigInteger(), 1) 188 | 189 | # it should dispatch an event 190 | self.assertEqual(len(TestContract.dispatched_events), 1) 191 | evt = TestContract.dispatched_events[0] 192 | self.assertEqual(evt.event_payload[0], b'kyc_registration') 193 | 194 | # register 2 addresses at once 195 | tx, results, total_ops, engine = TestBuild(out, ['crowdsale_register', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data])], self.GetWallet1(), '0705', '05') 196 | self.assertEqual(len(results), 1) 197 | self.assertEqual(results[0].GetBigInteger(), 2) 198 | 199 | # now check reg status 200 | tx, results, total_ops, engine = TestBuild(out, ['crowdsale_status', parse_param([self.wallet_3_script_hash.Data])], self.GetWallet3(), '0705', '05') 201 | self.assertEqual(len(results), 1) 202 | self.assertEqual(results[0].GetBoolean(), True) 203 | 204 | def test_ICOTemplate_4_attachments(self): 205 | 206 | output = Compiler.instance().load('%s/ico_template.py' % TestContract.dirname).default 207 | out = output.write() 208 | 209 | # test mint tokens without being kyc verified 210 | tx, results, total_ops, engine = TestBuild(out, ['get_attachments', '[]', '--attach-neo=10'], self.GetWallet3(), '0705', '05') 211 | self.assertEqual(len(results), 1) 212 | attachments = results[0].GetArray() 213 | self.assertEqual(len(attachments), 4) 214 | 215 | fn = FunctionCode(out, '0705', '05') 216 | 217 | self.assertEqual(attachments[0].GetByteArray(), fn.ScriptHash().Data) 218 | self.assertEqual(attachments[1].GetByteArray(), self.wallet_3_script_hash.Data) 219 | self.assertEqual(attachments[2].GetBigInteger(), Fixed8.FromDecimal(10).value) 220 | self.assertEqual(attachments[3].GetBigInteger(), 0) 221 | 222 | tx, results, total_ops, engine = TestBuild(out, ['get_attachments', '[]'], self.GetWallet3(), '0705', '05') 223 | self.assertEqual(len(results), 1) 224 | attachments = results[0].GetArray() 225 | self.assertEqual(len(attachments), 4) 226 | 227 | self.assertEqual(attachments[1].GetByteArray(), bytearray()) 228 | self.assertEqual(attachments[2].GetBigInteger(), 0) 229 | self.assertEqual(attachments[3].GetBigInteger(), 0) 230 | 231 | tx, results, total_ops, engine = TestBuild(out, ['get_attachments', '[]', '--attach-neo=3', '--attach-gas=3.12'], self.GetWallet1(), '0705', '05') 232 | self.assertEqual(len(results), 1) 233 | attachments = results[0].GetArray() 234 | self.assertEqual(len(attachments), 4) 235 | self.assertEqual(attachments[1].GetByteArray(), self.wallet_1_script_hash.Data) 236 | self.assertEqual(attachments[2].GetBigInteger(), Fixed8.FromDecimal(3).value) 237 | self.assertEqual(attachments[3].GetBigInteger(), Fixed8.FromDecimal(3.12).value) 238 | 239 | def test_ICOTemplate_5_mint(self): 240 | 241 | output = Compiler.instance().load('%s/ico_template.py' % TestContract.dirname).default 242 | out = output.write() 243 | 244 | # register an address 245 | tx, results, total_ops, engine = TestBuild(out, ['crowdsale_register', parse_param([self.wallet_3_script_hash.Data])], self.GetWallet1(), '0705', '05') 246 | self.assertEqual(len(results), 1) 247 | self.assertEqual(results[0].GetBigInteger(), 1) 248 | 249 | TestContract.dispatched_events = [] 250 | 251 | # test mint tokens, this should return true 252 | tx, results, total_ops, engine = TestBuild(out, ['mintTokens', '[]', '--attach-neo=10'], self.GetWallet3(), '0705', '05') 253 | self.assertEqual(len(results), 1) 254 | self.assertEqual(results[0].GetBoolean(), True) 255 | 256 | # it should dispatch an event 257 | self.assertEqual(len(TestContract.dispatched_events), 1) 258 | evt = TestContract.dispatched_events[0] 259 | self.assertIsInstance(evt, NotifyEvent) 260 | self.assertEqual(evt.amount, 10 * TOKENS_PER_NEO) 261 | self.assertEqual(evt.addr_to, self.wallet_3_script_hash) 262 | 263 | # test mint tokens again, this should be false since you can't do it twice 264 | tx, results, total_ops, engine = TestBuild(out, ['mintTokens', '[]', '--attach-neo=10'], self.GetWallet3(), '0705', '05') 265 | self.assertEqual(len(results), 1) 266 | self.assertEqual(results[0].GetBoolean(), False) 267 | 268 | # now the minter should have a balance 269 | tx, results, total_ops, engine = TestBuild(out, ['balanceOf', parse_param([self.wallet_3_script_hash.Data])], self.GetWallet1(), '0705', '05') 270 | self.assertEqual(len(results), 1) 271 | self.assertEqual(results[0].GetBigInteger(), 10 * TOKENS_PER_NEO) 272 | 273 | # now the total circulation should be bigger 274 | tx, results, total_ops, engine = TestBuild(out, ['totalSupply', '[]'], self.GetWallet1(), '0705', '05') 275 | self.assertEqual(len(results), 1) 276 | self.assertEqual(results[0].GetBigInteger(), (10 * TOKENS_PER_NEO) + TOKEN_INITIAL_AMOUNT) 277 | 278 | def test_ICOTemplate_6_approval(self): 279 | 280 | output = Compiler.instance().load('%s/ico_template.py' % TestContract.dirname).default 281 | out = output.write() 282 | 283 | # tranfer_from, approve, allowance 284 | tx, results, total_ops, engine = TestBuild(out, ['allowance', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data])], self.GetWallet2(), '0705', '05') 285 | self.assertEqual(len(results), 1) 286 | self.assertEqual(results[0].GetBigInteger(), 0) 287 | 288 | # try to transfer from 289 | tx, results, total_ops, engine = TestBuild(out, ['transferFrom', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data, 10000])], self.GetWallet2(), '0705', '05') 290 | self.assertEqual(len(results), 1) 291 | self.assertEqual(results[0].GetBoolean(), False) 292 | 293 | # try to approve from someone not yourself 294 | tx, results, total_ops, engine = TestBuild(out, ['approve', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data, 10000])], self.GetWallet2(), '0705', '05') 295 | self.assertEqual(len(results), 1) 296 | self.assertEqual(results[0].GetBigInteger(), 0) 297 | 298 | # try to approve more than you have 299 | tx, results, total_ops, engine = TestBuild(out, ['approve', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data, TOKEN_INITIAL_AMOUNT])], self.GetWallet3(), '0705', '05') 300 | self.assertEqual(len(results), 1) 301 | self.assertEqual(results[0].GetBigInteger(), 0) 302 | 303 | TestContract.dispatched_events = [] 304 | 305 | # approve should work 306 | tx, results, total_ops, engine = TestBuild(out, ['approve', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data, 1234])], self.GetWallet3(), '0705', '05') 307 | self.assertEqual(len(results), 1) 308 | self.assertEqual(results[0].GetBoolean(), True) 309 | 310 | # it should dispatch an event 311 | self.assertEqual(len(TestContract.dispatched_events), 1) 312 | evt = TestContract.dispatched_events[0] 313 | self.assertIsInstance(evt, NotifyEvent) 314 | self.assertEqual(evt.notify_type, b'approve') 315 | self.assertEqual(evt.amount, 1234) 316 | 317 | # check allowance 318 | tx, results, total_ops, engine = TestBuild(out, ['allowance', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data])], self.GetWallet2(), '0705', '05') 319 | self.assertEqual(len(results), 1) 320 | self.assertEqual(results[0].GetBigInteger(), 1234) 321 | 322 | # approve should not be additive, it should overwrite previous approvals 323 | tx, results, total_ops, engine = TestBuild(out, ['approve', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data, 133234])], self.GetWallet3(), '0705', '05') 324 | self.assertEqual(len(results), 1) 325 | self.assertEqual(results[0].GetBoolean(), True) 326 | 327 | tx, results, total_ops, engine = TestBuild(out, ['allowance', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data])], self.GetWallet2(), '0705', '05') 328 | self.assertEqual(len(results), 1) 329 | self.assertEqual(results[0].GetBigInteger(), 133234) 330 | 331 | # now you can transfer from 332 | tx, results, total_ops, engine = TestBuild(out, ['transferFrom', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data, 10000])], self.GetWallet2(), '0705', '05') 333 | self.assertEqual(len(results), 1) 334 | self.assertEqual(results[0].GetBoolean(), True) 335 | 336 | # now the recevier should have a balance 337 | # it is equal to 10000 plus test_transfer_amount = 2400000001 338 | 339 | tx, results, total_ops, engine = TestBuild(out, ['balanceOf', parse_param([self.wallet_2_script_hash.Data])], self.GetWallet1(), '0705', '05') 340 | self.assertEqual(len(results), 1) 341 | self.assertEqual(results[0].GetBigInteger(), 10000 + 2400000001) 342 | 343 | # now the allowance should be less 344 | tx, results, total_ops, engine = TestBuild(out, ['allowance', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data])], self.GetWallet2(), '0705', '05') 345 | self.assertEqual(len(results), 1) 346 | self.assertEqual(results[0].GetBigInteger(), 133234 - 10000) 347 | 348 | # try to transfer too much, even with approval 349 | tx, results, total_ops, engine = TestBuild(out, ['transferFrom', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data, 14440000])], self.GetWallet2(), '0705', '05') 350 | self.assertEqual(len(results), 1) 351 | self.assertEqual(results[0].GetBoolean(), False) 352 | 353 | # cant approve negative amounts 354 | tx, results, total_ops, engine = TestBuild(out, ['approve', parse_param([self.wallet_3_script_hash.Data, self.wallet_2_script_hash.Data, -1000])], self.GetWallet3(), '0705', '05') 355 | self.assertEqual(len(results), 1) 356 | self.assertEqual(results[0].GetBoolean(), False) 357 | --------------------------------------------------------------------------------