mutant

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Mutant now emits: > Calling `Expression::Base#quantify` or `Regexp::Expression::Quantifier.new` with 4+ arguments is deprecated. Using `regexp_parser` version `2.5.0`

dgollahon

Add boot time duration reporting

3

I propose that the duration from initiating mutant (hitting return) until mutant begins the killing processes be measured and added to the reporting output. My reason is that for me...

tjchambers

Do not mutate sorbet's `T.must`

11

I've found that there are cases where it is extremely difficult to satisfy the mutation that deletes sorounding `T.must(arg) -> arg`. This is particullary the case for overloaded methods, for...

rodrigovilina

[WIP] Failing tests for backref calls

1

These all independently crash the unit tests. I left 4 tests commented out since they seem to be invalid regexps, but there still may be a need to map them....

dgollahon

Mutation idea: `foo.all? { |bar| bar == baz }` -> `foo.all?(baz)`

1

dgollahon

Choose subjects based on an AST diff when using `--since`

2

The --since behavior is great but it has a few rough edges. One of those is that trivial formatting changes (a far-reaching rubocop style change) can trigger a massive amount...

dgollahon

Add an ability to specify path to the configuration file

8

At the moment mutant looks for configuration file in predefined place. This is a good convention and a default. In a repository hosting several components, each one in need of...

mostlyobvious

Idea: neutral mutation only mode

2

It would be helpful to be able to check that all code can be round-tripped and passes existing tests across a codebase for finding integration issues or mutant bugs.

dgollahon

Add additional popular repositories to the corpus test, such as `rails` for better coverage of syntax and ability to catch regressions.

dgollahon

Assert that we are able to round-trip all corpus source files in addition to generating mutations without error. See [this discussion on discord](https://discordapp.com/channels/767914934016802818/767915301874040844/970502515680501760)

dgollahon