Weird problem while launching tests with py.test

[mortimr]

• Populus Version: x.x.x

• OS: linux

  What was wrong?

  Hi, Tried to deploy a very simple contract (divided in two files), with an owner variable (owner = msg.sender). Basically I have a contract that has the owner part in it, and the second one inherits from it (like greeter and mortal). The problem is that when I launch some tests, the returned value is not the good one (checked on etherscan for the contract owner and it's good). I created a getter function that just returns an adress type variable . I am of course returning owner. The function is called showOwner, and I did this in the test file :

  pm = chain.get_contract('ProductManager')
  
  pm_test = pm.call().showOwner()
  assert pm_test == '(my_ether_address)'

  and I get another address that I have never seen before :/ . So I was wondering , is returning an address from a contract going to be well interpreted by python (address -> string) ? Or do I have a weird problem here ?

Thanks !

[pipermerriam]

This is expected behavior.

What you are seeing is your tests running against an in-memory EVM backed by pyethereum which is reset at the beginning of each test run. What you can test here is that pm.call().showOwner() == web3.eth.coinbase which will be the address which deploys the contract.

[pipermerriam]

Also, let me know if you have additional questions and feel free to re-open as well if I haven't actually answered your question.