Python 3.8 support

Python 3.8 is supported:

• https://mutatest.readthedocs.io/en/latest/install.html#are-there-differences-in-running-with-python-3-7-vs-python-3-8
• https://github.com/EvanKepner/mutatest/blob/master/CHANGELOG.rst#200

PRs/Issues: #21 #17

Patch to GenomeGroup add_folder exclude behavior

Patch in GenomeGroup.add_folder to ensure exclude_files uses fully resolved paths:

https://github.com/EvanKepner/mutatest/blob/master/CHANGELOG.rst#121

Timeout factor args and bugfix on exclude files

Includes feature #18 for allowing test timeouts, and addresses a bug in the exclude argument.

https://github.com/EvanKepner/mutatest/blob/master/CHANGELOG.rst#120

Bug fix: LocIndex ast_class for index nodes

Bug Fix #15: Fix LocIndex ast_class setting for Index nodes.

Support for INI config file

Add support for a mutatest.ini configuration file for command line arguments. See the docs for details e.g.,

[mutatest]

blacklist = nc su sr
exclude =
    mutatest/__init__.py
    mutatest/_devtools.py
mode = sd
rseed = 567
testcmds = pytest -m 'not slow'
debug = no
nocov = no

Documentation and mypy fixes

• Documentation updates, including the API tutorial.
• Fix on latest mypy errors related to strict processing of run and cache.

Beta release, docs, and an API

Moving from the alpha to the beta version with an API design. The alpha releases were focused on defining the functionality of the CLI. In the beta version, the CLI remains unchanged; however, a full internal design has been applied to create a coherent API. The controller, optimizers, and maker modules have been fully replaced by run, api, and filters. See the new full API documentation for details on using these modules outside of the CLI. Additionally, pytest has been removed from the install requirements since it is an assumption of the default test runner but not an API requirement.

Raise mutation exceptions based on survivor tolerance

• Added --exception and -x as a survivor tolerance to raise an exception after the trial completes if the count of surviving mutants is greater than or equal to the specified value.

Mutation category selection options

• Added --whitelist and --blacklist with category codes for mutation families.
• Provides CLI selection of mutation types to be used during the trials.

New if mutation type support

Added new If mutation:

• Original statements are represented by If_Statement and mutated to be either If_True where the statement always passes, or If_False where the statement is never passed.