1

Macbook Pro：蒙特雷

英特尔酷睿 i7

布朗尼 v1.17.2

Ganache CLI v6.12.2 (ganache-core: 2.13.2)

我正在根据参考（https://www.youtube.com/watch?v=M576WGiDBdQ&t=25510s）学习可靠性。

我使用 brownie 框架编写并部署了一个智能合约（scripts/deploy.py），它成功了。

然后尝试编写一个测试脚本（tests/test_simple_storage.py），在终端给我错误信息。

google了一下，尝试删除brownie项目的build文件夹中的所有文件，再次部署合约（scripts/deploy.py），还是同样的错误。

并尝试更改私钥和索引，对于accounts[0]到account[-1]和account[1]，同样的错误结果。

仅供参考：我在终端中输入了命令“ganache-cli —deterministic”。所以账户和私钥不是随机的。

将 Ganache 的帐户 [0] 的私钥保存在 .env 文件中，就像这样

.env

export PRIVATE_KEY=0x91114a07f248a1c50951cb11557af5424cc6a49bf61521874c9ae3f4ae239a6d

错误信息：</p> 

(base) liwei@liweideMacBook-Pro Brownie_Simple_Storage % brownie test
Brownie v1.17.2 - Python development framework for Ethereum

========================================================== test session starts ===========================================================
platform darwin -- Python 3.8.5, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /Users/liwei/Desktop/demos/practice/Brownie_Simple_Storage
plugins: eth-brownie-1.17.2, xdist-1.34.0, hypothesis-6.27.3, web3-5.25.0, forked-1.3.0
collected 0 items / 1 error                                                                                                              

================================================================= ERRORS =================================================================
_____________________________________________ ERROR collecting tests/test_simple_storage.py ______________________________________________
tests/test_simple_storage.py:5: in <module>
    account = accounts[0]
E   IndexError: list index out of range
======================================================== short test summary info =========================================================
FAILED tests/test_simple_storage.py - IndexError: list index out of range
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
============================================================ 1 error in 0.25s ============================================================
(base) liwei@liweideMacBook-Pro Brownie_Simple_Storage %

测试脚本--“tests/test_simple_storage.py”</p> 

from brownie import accounts, SimpleStorage


# Arrange
account = accounts[0]
print(account)
# Act
simple_storage = SimpleStorage.deploy({"from": account})
starting_value = simple_storage.retrieve()
expected = 0
# Assert
assert starting_value == expected

智能合约部署良好，使用相同的本地区块链，ganache-cli “scripts/deploy.py”</p> 

from brownie import accounts, config, SimpleStorage
import os


def deploy_simple_storage():

    # load from you set encrypted , not from ganache-cli which is brownie automated connceted to
    # account = accounts.load("MG515-account")
    # print(account)

    # add private key use enviroment variables
    # account = accounts.add(os.getenv("PRIVATE_KEY"))
    # print(account)

    # .deploy() , always need a "from"key in a dictinary when making a transaction
    account = accounts.add(config["wallets"]["from_key"])
    simple_storage = SimpleStorage.deploy({"from": account})
    stored_value = simple_storage.retrieve()
    print("Current stored value is ：&quot;)
    print(stored_value)
    print("Updating Contract...")
    transaction = simple_storage.store(15, {"from": account})
    transaction.wait(1)
    updated_store_value = simple_storage.retrieve()
    print("Current stored value is ：&quot;)
    print(updated_store_value)
    print(account)


def main():
    deploy_simple_storage()

更新于 20220111

阅读 brownie 文档后找到这个命令“network.connect("development")”，这个命令设置网络正确吗，我记得 brownie 应该默认连接到开发网络。

所以更新了这样的代码

from brownie import accounts, SimpleStorage, network


network.connect("development")

# Arrange
account = accounts[0]

print(accounts)
# Act
simple_storage = SimpleStorage.deploy({"from": account})
starting_value = simple_storage.retrieve()
expected = 0
# Assert

assert starting_value == expected

终端给出一条警告信息

(base) liwei@liweideMacBook-Pro Brownie_Simple_Storage % brownie test
Brownie v1.17.2 - Python development framework for Ethereum

========================================================== test session starts ==========================================================
platform darwin -- Python 3.8.5, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /Users/liwei/Desktop/demos/practice/Brownie_Simple_Storage
plugins: eth-brownie-1.17.2, xdist-1.34.0, hypothesis-6.27.3, web3-5.25.0, forked-1.3.0
collected 0 items                                                                                                                       

=========================================================== warnings summary ============================================================
../../../../.local/pipx/venvs/eth-brownie/lib/python3.8/site-packages/brownie/network/main.py:44
  /Users/liwei/.local/pipx/venvs/eth-brownie/lib/python3.8/site-packages/brownie/network/main.py:44: BrownieEnvironmentWarning: Development network has a block height of 2
    warnings.warn(

-- Docs: https://docs.pytest.org/en/stable/warnings.html
========================================================== 1 warning in 0.49s ===========================================================
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2 回答 2

3

通过 Infura 等托管节点连接到远程网络时，Accounts 容器将为空。在执行任何交易之前，您必须将本地帐户添加到 Brownie。看起来你不在开发环境中。

布朗尼文档将指导您如何设置帐户

于 2022-01-07T02:10:53.327 回答
1

问题解决了，忘记写“def test_deploy():”部分

def test_deploy():
    # Arrange
    account = accounts[0]

    # Act
    simple_storage = SimpleStorage.deploy({"from": account})
    starting_value = simple_storage.retrieve()
    expected = 0
    # Assert

    assert starting_value == expected
于 2022-02-06T09:24:32.363 回答