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# v0.8.22 2018-12-04
* Remove hard ruby version requirement. 2.5 is still the only officially supported version.
# v0.8.21 2018-12-03
* Change to modern ast format via unparser-0.4.1.
# v0.8.20 2018-11-27
* Replace internal timers with monotonic ones.
# v0.8.19 2018-11-06
* Drop support for Ruby < 2.5
* Fix bug when mutating a module that includes Memoizable
# v0.8.18 2018-10-24
* Add support for regexp unicode print nodes https://github.com/mbj/mutant/pull/749
# v0.8.17 2018-09-12
* Drop support for Ruby < 2.3
* Use frozen string literals globally
* Update to parser ~> 2.5
# v0.8.16 2018-08-03
* Support for rspec-3.x
# v0.8.15 2018-07-17
* Fix boot time issue
* Support for rspec-3.7
# v0.8.14 2017-07-06
* Support ruby 2.4 #719
# v0.8.13 2017-06-01
* Allow empty match expressions on CLI
* Add support for rspec-3.6 by @krzysiek150
* Add support for configurable corpus glob exprssions by @jekuta
# v0.8.12 2016-10-17
* Add mutation from `/foo|bar/` to `/foo/` and `/bar/`
* Add mutation from `/$/` to `/\z/`
* Add mutation from `/\h/` to `/\H/`
* Add mutation from `/\H/` to `/\h/`
* Add mutation from `/\Z/` to `/\z/`
* Add mutation from `flat_map` to `map`
* Add mutation from `/(foo)/` to `/(?:foo)/`
* Add mutation from `/a*/` to `/a+/`
* Add mutation from `/a*/` to `/a/`
* Add mutation from `!!foo` to `foo`
* Add mutation from `proc { }` to `lambda { }`
# v0.8.11 2016-08-01
* Add support for rspec-3.5
* Remove misleading `--debug` option
* Remove misleading `--expect-coverage` option
* Add basic support for regexp mutations (machinery and simple anchor mutations)
* Add support for mutating csend (duck tape operator) into regular sends
* Add mutation from `foo&.bar` to `foo.bar`
* Add mutation from `#to_a` to `#to_set`
* Add mutation from `foo.dig(a, b)` to `foo.fetch(a).dig(b)`
* Add mutation from `def foo(bar:); end` to `def foo(_bar:); end`
* Add mutation from `def foo(bar: baz); end` to `def foo(_bar: baz); end`
* Add mutation from `/regex/i` to `/regex/`
* Add mutation from `foo[n..-1]` to `foo.drop(n)`
* Add mutation from `/^/` to `/\A/`
* Add mutation from `#first` to `#last`
* Add mutation from `#last` to `#first`
* Add mutation from `#sample` to `#first` and `#last`
* Remove mutations from `1..n` to `1..(0.0 / 0.0)` and `1..(1.0 / 0.0)`
# v0.8.10 2016-01-24
* Add support for parser 2.3 (via unparser 0.2.5)
# v0.8.9 2016-01-05
* Add mutation from `Hash#[]` to `Hash#key?` (#511)
* Add mutation from `Hash#fetch` to `Hash#key?` (#511)
* Add mutation from `#at` to `#key?` (#511)
* Add mutation from `Hash#values_at` to `Hash#fetch_values` (#510)
# v0.8.8 2015-11-15
* Drop support for rspec-3.2
* Remove CI specific job number default
* Add support for rspec-3.3.4
* Add mutations/s performance metric to report
# v0.8.7 2015-10-30
* Fix blackliting regexp to correctly match the String `(eval)` absolutely.
# v0.8.6. 2015-10-27
* Add mutation from `Date.parse` to more strict parsing methods #448
* Add mutation from `foo.to_i` to `Integer(foo)` #455
* Add mutation from `@foo` to `foo` #454
# v0.8.5 2015-09-11
* Fix misimplementation of block gluing operator that
as side effect could also cause invalid AST crashes
# v0.8.4 2015-09-10
* Add mutation from `a != b` to `!a.eql?(b)` and `!a.equal?(b)` #417
* Add mutation `A.const_get(:B)` -> `A::B` #426
* Add mutation `def foo(*args); end` into `def foo(*args); args = []; end` #423
* Add mutation from `foo.baz { bar }` to `foo.bar` #416
* Update anima dependency to 0.3.0
# v0.8.3 2015-09-01
* Remove invalid mutation `super(...)` to `super`
* Add mutation from `def foo(a = true); end` to `def foo(a = true); a = true; end` #419
* Add mutation from `def foo; end` to `remove_method :foo` #413
# v0.8.2 2015-08-11
* Remove invalid mutation `foo or bar` to `!(foo or bar)` see #287
* Add mutation from `#to_h` to `#to_hash` #218
* Add mutation from `super` to `super()` #309
* Add mutation from `#defined?` to `true` / `false` #399
* Reduce framed (multiline) progress reporter noise
* Fix a bug where killfork pipes where not properly closed
# v0.8.1 2015-07-24
* Add --since flag to constrain mutated subjects based on
repository diff from HEAD to other REVISON.
* Add mutation from #[] to #at / #fetch
* Some internal improvements
# v0.8.0 2015-06-15
* Drop support for ruby < 2.1
* Remove broken `--code` option
* Remove deprecated `--score` option
* Add support for rspec-3.3
* End support for rspec-3.{0,1}
* Internal quality improvements
# v0.7.9 2015-05-30
* Deprecate `--score` flag replace with `--expected-coverage`
* Set default job count to 4 under CI environments.
* Relax parser dependency to ~>2.2.2
# v0.7.8 2015-03-8
* Kill imperfect float rounding for exact coverage expectations.
# v0.7.7 2015-02-15
* Add support for rspec-3.2
# v0.7.6 2015-01-25
* Fix crash on using the null integration.
# v0.7.5 2015-01-14
* Bump deps to support MRI 2.2.
# v0.7.4 2014-12-22
* Fix rspec example visibility on duplicate metadata examples [#279](https://github.com/mbj/mutant/issues/279).
* Add naked if/else body emitter [#280](https://github.com/mbj/mutant/issues/280).
# v0.7.3 2014-12-09
* Fix communication between workers and killforks to work for all binaries.
# v0.7.2 2014-12-08
* Fix synthetic race conditon in actor implementation
* Fix progressive reporter slowdown
# v0.7.1 2014-12-04
* Fix invalid dependencies on rspec for mutant-rspec
# v0.7.0 2014-12-04
* Use homegrown actor based parallelization
* Fix redundant spec execution in rspec integration
* Add mutation from `#send` to `#__send__` (the canonical form).
# v0.6.7 2014-11-17
* Fix duplicate neutral emit for memoized instance method subjects
* Fix neutral error detection edge cases
# v0.6.6 2014-11-11
* Fix emitter to recurse into left and right of binary nodes.
# v0.6.5 2014-10-28
* Fix killforks not to leak zombies.
# v0.6.4 2014-10-27
* Do not buffer report prints, speedup large report generation.
* Fix some cases where --fail-fast semantics stopped far to late.
* Fix crashing / stuckage from using parallel in a nested way.
# v0.6.3 2014-09-22
* Add support for rspec-3.1.
# v0.6.2 2014-09-16
* Fix matcher to ignore metaprogrammed defines [#254](https://github.com/mbj/mutant/issues/254)
* Add rescue resbody body concat-promotion mutation
* Add rescue else body concat-promotion mutation #245
# v0.6.1 2014-09-16
* Incorrectly released on partial state. Yanked.
# v0.6.0 2014-08-11
* Parallel execution / reporting.
* Add -j, --jobs flag to control concurrency.
* Fix blind spots on send with block.
* Add mutation from `foo { bar }` to `bar`
* Add mutation from `#reverse_merge` to `#merge`
* Add mutation from `#<=` to `#<`, `#==`, `#eql?`, `#equal?`
* Add mutation from `#>=` to `#>`, `#==`, `#eql?`, `#equal?`
* Add mutation from `#>` to `#==`, `#eql?`, `#equal?`
* Add mutation from `#<` to `#==`, `#eql?`, `#equal?`
* Fix reporting of diff errors to include context [tjchambers]
# v0.5.26 2014-07-07
* Fix exceptions generation matcher errors
* Fix report generation with formatted string as payload of diffs.
# v0.5.25 2014-07-07
* Make ordering of subjects and tests deterministic
* Fix performance of subject selection
* Improve noop and neutral reporting.
* Rename noop mutations to neutral mutations
* Simplify code nuked around 1kloc.
# v0.5.24 2014-06-30
* Fix invalid AST on op_assign mutations
* Make subject matching result order deterministic
* Improve internals a bit for more consistency.
* Add instance methods expression 'Foo#'
* Add singleton methods expression 'Foo.'
* Split rspec2 and rspec3 integration with minimal duplication
* Move test matching outside of integrations.
# v0.5.23 2014-06-15
* Propagate exceptions from child-isolation-killforks to master
# v0.5.22 2014-06-15
* Fix invalid AST generation on operator method mutation with self as receiver.
# v0.5.21 2014-06-15
* Readd mutation of index assignments
* Remove a bunch of useless mutations to nil.something
* Readd mutation of index reference arguments
# v0.5.20 2014-06-14
* Remove support for matchers prefixed with ::
* Fix cases where mutated source diff was empty #198
* Fix mutate to simpler primitive violation break to next #203
* Improve integration / corpus tests to spot highlevel regressions on CI level.
* Remove support for matchers prefixed with ::
# v0.5.19 2014-06-06
Changes:
* Do not emit more powerful rescue matchers #183
* Do not emit more powerful loop control #201
# v0.5.18 2014-06-04
Changes:
* Do not rename lhs of or assigns when lhs is a ivasgn. Closes #150
# v0.5.17 2014-05-27
Changes:
* Report selected tests in progress runner
* Fix scope of rspec selections to include meaningful parents.
* Add short circuits on already dead mutations under multiple test selections.
# v0.5.16 2014-05-27
Changes:
* Fix granularity of test selection under rspec
* Add mutation from [item] to item
* Add mutation from #reverse_each to #each
* Add mutation from #reverse_map to #each, #map
* Add mutation from #map to #each
# v0.5.15 2014-05-24
Changes:
* Put isolation pipe into binmode
Changes:
* Add support for rspec-3.0.0.rc1
* Remove some senseless rescue mutations
# v0.5.13 2014-05-23
Changes:
* Improve reporting of isolation problems
* Centralize test selection
* Report selected tests
* Report rspec output on noop failures
* Silence warnings on methods without source location
# v0.5.12 2014-05-09
Changes:
* Remove pointless mutation nil => Object.new
# v0.5.11 2014-04-22
Changes:
* Fix crash on while and until without body
* Better require highjack based zombifier
* Do not mutate nthref $1 to gvar $0
* Use faster duplicate guarding hashing AST::Node instances
* Fix lots of shadowed invalid ASTs
* Fix undefine initialize warnings, Closes #175
# v0.5.10 2014-04-06
Changes:
* Fix crash on case without conditional
* Remove dependency to descendants tracker
* Add mutation #== => #eql?, #equal?
* Add mutation #eql? => #equal?
# v0.5.9 2014-03-28
Changes:
* Fix mutation of memoized methods with the memoizable gem.
# v0.5.8 2014-03-26
Changes:
* Fix crash on Module#name and Class#name returning non Strings
# v0.5.7 2014-03-23
Changes:
* Fix crash on invalid partial AST unparsing, closes: #164
# v0.5.6 2014-03-09
Changes:
* Correctly specifiy diff-lcs dependency
# v0.5.5 2014-03-09
Changes:
* Morpher dependency bump
# v0.5.4 2014-03-08
Changes:
* Morpher dependency bump
# v0.5.3 2014-03-05
Changes:
* mutant-rspec now supports rspec3 beta
# v0.5.2 2014-03-04
Changes:
* Use parser 2.1.6 that has its own Parser::Meta::NODE_LIST
# v0.5.1 2014-03-03
Changes:
* Remove rspec dep from main mutant gem
# v0.5.0 2014-03-02
Changes:
* Add configurable coverage expectation via --coverage (default 100%)
* rspec integration was moved into a gem 'mutant-rspec'
* Replace filters implementation with morpher predicates
* Drop --rspec option use: --use rspec instead.
# v0.4.0 2014-02-16
Status: Yanked because of broken dependencies.
# v0.3.4 2014-01-11
Changes:
* Depend on anima-0.2.0
# v0.3.4 2014-01-11
Bugfixes:
* Correctly fix crash on attribute assignments nodes: https://github.com/mbj/mutant/issues/149
# v0.3.3 2014-01-11
Changes:
* Bump dependency to unparser-0.1.8 that fixes dozens of non reported issues.
Bugfixes:
* Fix crash on attribute assignments nodes: https://github.com/mbj/mutant/issues/149
# v0.3.2 2013-12-31
Bugfixes:
* Fix crash on until nodes: https://github.com/mbj/mutant/issues/143
* Fix missing requires: https://github.com/mbj/mutant/issues/141
* Fix crash on unknown nodes, fixes #143
* Use more durable unparser version 0.1.6
# v0.3.1 2013-12-19
Bugfixes:
* Add missing require of stringio, #141
# v0.3.0 2013-12-10
Feature:
* Rewrite all mutators on top of whitequark/parser (major!)
* Also mutate conditions in case statements
* Add tons of mutators I lost track about during development.
* Add --ignore-subject optoin supporting the same syntax as matchers
Bugfixes:
* Fix lots of crashes.
* Fix all known multiple diff errors
* Handle methods memoized with adamantium correctly
Bugfixes:
* Fix all bugs caused by mutant-melbourne
# v0.2.20 2013-03-01
* Update dependencies
[Compare v0.2.17..v0.2.20](https://github.com/mbj/mutant/compare/v0.2.17...v0.2.20)
# v0.2.17 2013-01-20
* Kill mutations in #initialize from class methods.
# v0.2.17 2013-01-20
Other:
* Update dependencies
[Compare v0.2.16..v0.2.17](https://github.com/mbj/mutant/compare/v0.2.16...v0.2.17)
# v0.2.16 2013-01-20
Bugfix:
* Handle Rubinius::AST::NthRef as noop
[Compare v0.2.15..v0.2.16](https://github.com/mbj/mutant/compare/v0.2.15...v0.2.16)
# v0.2.15 2013-01-10
Bugfix:
* Do not mutate super to super() anymore. This needs a context check in future.
[Compare v0.2.14..v0.2.15](https://github.com/mbj/mutant/compare/v0.2.14...v0.2.15)
# v0.2.14 2013-01-09
Bugfix:
* Do not emit mutation to { nil => nil } for hash literals
[Compare v0.2.13..v0.2.14](https://github.com/mbj/mutant/compare/v0.2.13...v0.2.14)
# v0.2.13 2013-01-09
Bugfix:
* Capture failures that occur in the window between mutation insertion and spec run as kills
[Compare v0.2.12..v0.2.13](https://github.com/mbj/mutant/compare/v0.2.12...v0.2.13)
# v0.2.12 2013-01-03
Bugfix:
* Do not crash when trying to load methods from precompiled ruby under rbx
[Compare v0.2.11..v0.2.12](https://github.com/mbj/mutant/compare/v0.2.11...v0.2.12)
# v0.2.11 2013-01-03
Feature:
* Handle binary operator methods in dedicated mutator
Bugfix:
* Do not crash when mutating binary operator method
[Compare v0.2.10..v0.2.11](https://github.com/mbj/mutant/compare/v0.2.10...v0.2.11)
# v0.2.10 2013-01-03
Bugfix:
* Do not mutate receivers away when message name is a keyword
[Compare v0.2.9..v0.2.10](https://github.com/mbj/mutant/compare/v0.2.9...v0.2.10)
# v0.2.9 2013-01-02
Feature:
* Mutate instance and global variable assignments
* Mutate super calls
[Compare v0.2.8..v0.2.9](https://github.com/mbj/mutant/compare/v0.2.8...v0.2.9)
# v0.2.8 2012-12-29
Feature:
* Do not mutate argument or local variable names beginning with an underscore
* Mutate unary calls ```coerce(object)``` => ```object```
* Mutate method call receivers ```foo.bar``` => ```foo```
[Compare v0.2.7..v0.2.8](https://github.com/mbj/mutant/compare/v0.2.7...v0.2.8)
# v0.2.7 2012-12-21
Feature:
* Use latest adamantium and ice_nine
[Compare v0.2.6..v0.2.7](https://github.com/mbj/mutant/compare/v0.2.6...v0.2.7)
# v0.2.6 2012-12-14
Bugfix:
* Correctly set file and line of injected mutants
[Compare v0.2.5..v0.2.6](https://github.com/mbj/mutant/compare/v0.2.5...v0.2.6)
# v0.2.5 2012-12-12
Feature:
* Add --debug flag for showing killer output and mutation
* Run noop mutation per subject to guard against initial failing specs
* Mutate default into required arguments
* Mutate default literals
* Mutate unwinding of pattern args ```|(a, b), c|``` => ```|a, b, c|```
* Mutate define and block arguments
* Mutate block arguments, inklusive pattern args
* Recurse into block bodies
* Unvendor inflector use mbj-inflector from rubygems
Bugfix:
* Insert mutations at correct constant scope
* Crash on mutating yield, added a noop for now
* Crash on singleton methods defined on other than constants or self
[Compare v0.2.4..v0.2.5](https://github.com/mbj/mutant/compare/v0.2.4...v0.2.5)
# v0.2.4 2012-12-12
Bugfix:
* Correctly vendor inflector
[Compare v0.2.3..v0.2.4](https://github.com/mbj/mutant/compare/v0.2.3...v0.2.4)
# v0.2.3 2012-12-08
Bugfix:
* Prepend extra elements to hash and array instead of append. This fixes unkillable mutators in parallel assignments!
[Compare v0.2.2..v0.2.3](https://github.com/mbj/mutant/compare/v0.2.2...v0.2.3)
# v0.2.2 2012-12-07
Feature:
* Add a shitload of operator expansions for dm2 strategy
[Compare v0.2.1..v0.2.2](https://github.com/mbj/mutant/compare/v0.2.1...v0.2.2)
# v0.2.1 2012-12-07
Bugfix:
* Crash on unavailable source location
* Incorrect handling of if and unless statements
* Expand Foo#initialize to spec/unit/foo in rspec dm2 strategy
* Correctly expand [] to element_reader_spec.rb in rspec dm2 strategy
* Correctly expand []= to element_writer_spec.rb in rspec dm2 strategy
* Correctly expand foo= to foo_writer_spec.rb in rspec dm2 strategy
[Compare v0.2.0..v0.2.1](https://github.com/mbj/mutant/compare/v0.2.0...v0.2.1)
# v0.2.0 2012-12-07
First public release!
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