free_mutant/Changelog.md

v0.8.24 2018-12-29

• Change to always insert mutations with frozen string literals
• Fix various invalid AST or source mutations
• Handle regexp regexp_parser cannot parse but MRI accepts gracefully

v0.8.23 2018-12-23

• Improved isolation error reporting
• Errors between isolation and tests do not kill mutations anymore.

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.
• Add naked if/else body emitter #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
• 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

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

v0.2.16 2013-01-20

Bugfix:

• Handle Rubinius::AST::NthRef as noop

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

v0.2.14 2013-01-09

Bugfix:

• Do not emit mutation to { nil => nil } for hash literals

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

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

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

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

v0.2.9 2013-01-02

Feature:

• Mutate instance and global variable assignments
• Mutate super calls

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

v0.2.7 2012-12-21

Feature:

• Use latest adamantium and ice_nine

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

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

v0.2.4 2012-12-12

Bugfix:

• Correctly vendor inflector

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

v0.2.2 2012-12-07

Feature:

• Add a shitload of operator expansions for dm2 strategy

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

v0.2.0 2012-12-07

First public release!