Fixes#3996.
I'm pretty confident this PR solves the problem. I've audited all calls to IDisplay methods and the assertions done in certbot.display.util are now done in all our unit tests.
With that said, it wouldn't hurt to have someone else double check I didn't miss anything. The easiest way to do this is to grep for IDisplay in our code and ensure all calls to IDisplay methods are valid. This means every method call other than notification (because a notification call is always OK) either provides a value for default or force_interactive. This is defined in interfaces.py.
I've also been considering removing the assertion that's been causing us trouble here from our release. The only argument I have for not doing so is it may hinder 3rd party plugin development. When they use IDisplay, they have the same problem as we do with prompting users without a TTY. Not keeping this assertion in makes it more likely they won't notice the issue and Certbot will crash on an unsuspecting user.
With that said, none of our known 3rd party plugins use IDisplay at all.
* Provide force_interactive in _get_certname
* Use force_interactive when asking for webroot
* Factor IDisplay assertion into it's own function
* Add util.patch_get_utility()
* Allow custom path to patch_get_utiity
* Change GetEmailTest to use patch_get_utility
* Use new_callable to create new objects
* Modify tests to use patch_get_utility
* Improve FreezableMock documentation
* Add user facing error to TTY magic
* Comment out assert_valid_call
* Add test_input_assertion_fail2()
* correctly match * and ? in ServerAlias directives
* update Apache wildcard test
* Consolidate wildcard matching and remove bad test
* Test Apache vhost selection with wildcards
* Added few more tests to proof vhost selection
* CLI flag for forcing interactivity
* add --force-interactive
* Add force_interactive error checking and tests
* Add force_interactive parameter to FileDisplay
* add _can_interact
* Add _return_default
* Add **unused_kwargs to NoninteractiveDisplay
* improve _return_default assertion
* Change IDisplay calls and write tests
* Document force_interactive in interfaces.py
* Don't force_interactive with a new prompt
* Warn when skipping an interaction for the first time
* add specific logger.debug message
* Parallalelise nosetests from tox
* Parallelise even more things, break even more things
* Now unbreak all the tests that aren't ready for ||ism
* Try to pass tests!
- Remove non-working hack in reporter_test
- also be selective about ||ism in the cover environment
* Try again
* certbot-apache tests also work, given enough time
* Nginx may need more time in Travis's cloud
* Unbreak reporter_test under ||ism
* More timeout
* Working again?
* This goes way faster
* Another big win
* Split a couple more large test suites
* A last improvement
* More ||ism!
* ||ise lint too
* Allow nosetests to figure out how many cores to use
* simplify merge
* Mark the new CLI tests as ||izable
* Simplify reporter_test changes
* Rationalise ||ism flags
* Re-up coverage
* Clean up reporter tests
* Stop modifying testdata during tests
* remove unused os
* Begin breaking out cli_test.py
* simplify main
* refactor porse tests
* move determine account tests to main_test.py
* move duplicate cert test to main_test.py
* move cli stuff out of the way
* add test_renewal.py
* move error test into error_handler_test.py
* move test_read_file
* move test_no_gui out of MainTest
* move test_install_abspath to parsetest
* Move main tests into main_test.py
* move cli tests back into cli_test.py
* clean up cli_test.py
* move punycode test to util_test.py
* Fix NameError from missing plugins_disco
* Fix linting errors
* test_renewal.py -> renewal_test.py
* rm not_cli_test.py
* Move main._handle_exception test to main_test.py
* Move renewal import in renewal_test.py
from @ohemorange comments
* certbot.tests.test_util -> certbot.tests.util
* Fix issues from rebasing.
* Fix testing issue with option_was_set
* fix linting issue
* Allow running constants_test.py individually
* Mock until tests pass
Mock out both functions used to determine the OS in
certbot_apache.tests.constants_test.
