Brownie Modifiers Test

This project shows a bug in the test coverage functionality. When using function modifiers on your solidity code which call functions in a base-class, there is no way to get 100% coverage in the tests.

Steps to reproduce

Get the code

git clone https://github.com/dishmop/brownie_modifiers_test.git
cd brownie_modifiers_test

Install pipenv if you don't already have it

pip install pipenv

Activate virtual environment

pipenv shell
pipenv install

Run tests. The first one passes and the next two fail - just because we try and make an interface to the contract

brownie test

You can demo it in the console too.

brownie console

Paste these lines in one at a time

bar = Bar.deploy({"from": accounts[0]})

# Note that the test event is fired
tx1 = bar.testEvent()
tx1.events


# try again and all fine
tx2 = bar.testEvent()
tx2.events

# attempt to get an interface object
iFoo = interface.IFoo(bar)

# Now the TestEvent isn't there
tx3 = bar.testEvent()
tx3.events