Configure doctest options through DTConfig

[ev-br]

Several things to investigate:

• what are the right pytest ways of adding options. Do we specify stuff in conftest.py or some other way?
• can we tack a DTConfig instance to pytest's own config object? The latter is being passed around by pytest anyway, so would be nice to use it.

[Sheila-nk]

@ev-br

can we tack a DTConfig instance to pytest's own config object?

You were right about this, it's only a single line of code for each attribute:

def pytest_configure(config):
    """
    Allow plugins and conftest files to perform initial configuration.
    """
    config.nameerror_after_exception = dt_config.nameerror_after_exception
    config.user_context_mgr = dt_config.user_context_mgr

then you can pass the config instance wherever. I have tried it and it works.

[ev-br]

I think it's safer to have a dt_config attribute of pytest config object

[Sheila-nk]

Hmmm, not sure I understand. Like this?

config.dt_config = dt_config

[ev-br]

Indeed! This way, in the pytest layer there is only pytest config, in the doctesting layer, there is only DTConfig.