mbj · mbj · Nov 27, 2023 · Nov 27, 2023
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ruby-2.7, ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
+        ruby: [ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
         os: [ubuntu-latest]
         include:
         - os: macos-latest
@@ -40,7 +40,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ruby-2.7, ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
+        ruby: [ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
         os: [ubuntu-latest]
         include:
         - os: macos-latest
@@ -65,7 +65,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ruby-2.7, ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
+        ruby: [ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
         os: [ubuntu-latest]
         include:
         - os: macos-latest
@@ -92,7 +92,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ruby-2.7, ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
+        ruby: [ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
         os: [ubuntu-latest]
     steps:
     - uses: actions/checkout@v3
@@ -108,7 +108,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ruby-2.7, ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
+        ruby: [ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
         os: [ubuntu-latest]
     steps:
     - uses: actions/checkout@v3
@@ -124,7 +124,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ruby-2.7, ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
+        ruby: [ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
         os: [ubuntu-latest]
     steps:
     - uses: actions/checkout@v3
@@ -140,7 +140,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ruby-2.7, ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
+        ruby: [ruby-3.0, ruby-3.1.2, ruby-3.1, ruby-3.2]
         os: [ubuntu-latest]
     steps:
     - uses: actions/checkout@v3

diff --git a/.rubocop.yml b/.rubocop.yml
@@ -5,7 +5,7 @@ AllCops:
     - 'tmp/**/*'
     - 'vendor/**/*'
   NewCops: enable
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 3.0
   # This is output on every run of `rubocop` and feels fairly noisy.
   SuggestExtensions: false
 

diff --git a/Changelog.md b/Changelog.md
@@ -1,3 +1,7 @@
+# v0.11.26 unreleased
+
+* Drop support for ruby 2.7
+
 # v0.11.25 2023-10-18
 
 * Add support for commercial organization wide licenses
@@ -37,7 +41,7 @@
 
   The old key is still supported but deprecated.
 
-  Add ability to provide multiple `--integration-argument` options that get passed down 
+  Add ability to provide multiple `--integration-argument` options that get passed down
   directly to rspec. Also available in the config file.
 
 # v0.11.20 2023-05-22

diff --git a/README.md b/README.md
@@ -58,13 +58,12 @@ Supported indicates if a specific Ruby version / Implementation is actively supp
 
 | Implementation | Version        | Runtime            | Syntax             | Mutations          | Supported          |
 | -------------- | -------------- | -------            | ------------------ | ------------------ | ------------------ |
-| cRUBY/MRI      | 2.7            | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
 | cRUBY/MRI      | 3.0            | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
 | cRUBY/MRI      | 3.1            | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
 | cRUBY/MRI      | 3.2            | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
 | jruby          | TBD            | :email:            | :email:            | :email:            | :email:            |
 | mruby          | TBD            | :email:            | :email:            | :email:            | :email:            |
-| cRUBY/MRI      | < 2.7          | :no_entry:         | :no_entry:         | :no_entry:         | :no_entry:         |
+| cRUBY/MRI      | < 3.0          | :no_entry:         | :no_entry:         | :no_entry:         | :no_entry:         |
 
 
 Labels:

diff --git a/lib/mutant.rb b/lib/mutant.rb
@@ -63,8 +63,8 @@ module Mutant
 
   env_key = /[a-zA-Z_\d]+/
 
-  ENV_VARIABLE_KEY_VALUE_REGEXP = /\A(?<key>#{env_key}+)=(?<value>.*)\z/.freeze
-  ENV_VARIABLE_KEY_REGEXP       = /\A#{env_key}\z/.freeze
+  ENV_VARIABLE_KEY_VALUE_REGEXP = /\A(?<key>#{env_key}+)=(?<value>.*)\z/
+  ENV_VARIABLE_KEY_REGEXP       = /\A#{env_key}\z/
 
   # rubocop:disable Metrics/BlockLength
   record.call(:require_mutant_lib) do

diff --git a/lib/mutant/ast/pattern/lexer.rb b/lib/mutant/ast/pattern/lexer.rb
@@ -6,7 +6,7 @@ class Pattern
       # rubocop:disable Metrics/ClassLength
       class Lexer
         WHITESPACE     = [' ', "\t", "\n"].to_set.freeze
-        STRING_PATTERN = /\A[a-zA-Z][_a-zA-Z0-9]*\z/.freeze
+        STRING_PATTERN = /\A[a-zA-Z][_a-zA-Z0-9]*\z/
 
         SINGLE_CHAR =
           {

diff --git a/lib/mutant/expression.rb b/lib/mutant/expression.rb
@@ -4,8 +4,8 @@ module Mutant
 
   # Abstract base class for match expression
   class Expression
-    fragment             = /[A-Za-z][A-Za-z\d_]*/.freeze
-    SCOPE_NAME_PATTERN   = /(?<scope_name>#{fragment}(?:#{SCOPE_OPERATOR}#{fragment})*)/.freeze
+    fragment             = /[A-Za-z][A-Za-z\d_]*/
+    SCOPE_NAME_PATTERN   = /(?<scope_name>#{fragment}(?:#{SCOPE_OPERATOR}#{fragment})*)/
     SCOPE_SYMBOL_PATTERN = '(?<scope_symbol>[.#])'
 
     private_constant(*constants(false))

diff --git a/lib/mutant/expression/descendants.rb b/lib/mutant/expression/descendants.rb
@@ -5,7 +5,7 @@ class Expression
     class Descendants < self
       include Anima.new(:const_name)
 
-      REGEXP = /\Adescendants:(?<const_name>.+)\z/.freeze
+      REGEXP = /\Adescendants:(?<const_name>.+)\z/
 
       def syntax
         "descendants:#{const_name}"

diff --git a/lib/mutant/expression/method.rb b/lib/mutant/expression/method.rb
@@ -20,11 +20,11 @@ class Method < self
         '#' => [Matcher::Methods::Instance].freeze
       }.freeze
 
-      METHOD_NAME_PATTERN = /(?<method_name>.+)/.freeze
+      METHOD_NAME_PATTERN = /(?<method_name>.+)/
 
       private_constant(*constants(false))
 
-      REGEXP = /\A#{SCOPE_NAME_PATTERN}#{SCOPE_SYMBOL_PATTERN}#{METHOD_NAME_PATTERN}\z/.freeze
+      REGEXP = /\A#{SCOPE_NAME_PATTERN}#{SCOPE_SYMBOL_PATTERN}#{METHOD_NAME_PATTERN}\z/
 
       def initialize(*)
         super

diff --git a/lib/mutant/expression/methods.rb b/lib/mutant/expression/methods.rb
@@ -19,7 +19,7 @@ class Methods < self
 
       private_constant(*constants(false))
 
-      REGEXP = /\A#{SCOPE_NAME_PATTERN}#{SCOPE_SYMBOL_PATTERN}\z/.freeze
+      REGEXP = /\A#{SCOPE_NAME_PATTERN}#{SCOPE_SYMBOL_PATTERN}\z/
 
       def initialize(*)
         super

diff --git a/lib/mutant/expression/namespace.rb b/lib/mutant/expression/namespace.rb
@@ -9,15 +9,15 @@ class Namespace < self
 
       # Recursive namespace expression
       class Recursive < self
-        REGEXP = /\A#{SCOPE_NAME_PATTERN}?\*\z/.freeze
+        REGEXP = /\A#{SCOPE_NAME_PATTERN}?\*\z/
 
         # Initialize object
         #
         # @return [undefined]
         def initialize(*)
           super
 
-          @syntax = "#{scope_name}*".freeze # rubocop:disable Style/RedundantFreeze
+          @syntax = "#{scope_name}*".freeze
 
           @recursion_pattern = Regexp.union(
             /\A#{scope_name}\z/,
@@ -60,7 +60,7 @@ class Exact < self
         MATCHER = Matcher::Scope
         private_constant(*constants(false))
 
-        REGEXP = /\A#{SCOPE_NAME_PATTERN}\z/.freeze
+        REGEXP = /\A#{SCOPE_NAME_PATTERN}\z/
 
         # Matcher matcher on expression
         #

diff --git a/lib/mutant/integration/rspec.rb b/lib/mutant/integration/rspec.rb
@@ -22,7 +22,7 @@ class Integration
     class Rspec < self
 
       ALL_EXPRESSION       = Expression::Namespace::Recursive.new(scope_name: nil)
-      EXPRESSION_CANDIDATE = /\A([^ ]+)(?: )?/.freeze
+      EXPRESSION_CANDIDATE = /\A([^ ]+)(?: )?/
       EXIT_SUCCESS         = 0
       DEFAULT_CLI_OPTIONS  = %w[--fail-fast spec].freeze
       TEST_ID_FORMAT       = 'rspec:%<index>d:%<location>s/%<description>s'

diff --git a/lib/mutant/license/subscription/repository.rb b/lib/mutant/license/subscription/repository.rb
@@ -6,11 +6,11 @@ class Subscription
       class Repository
         include Anima.new(:host, :path)
 
-        REMOTE_REGEXP    = /\A[^\t]+\t(?<url>[^ ]+) \((?:fetch|push)\)\n\z/.freeze
-        GIT_SSH_REGEXP   = %r{\A[^@]+@(?<host>[^:/]+)[:/](?<path>.+?)(?:\.git)?\z}.freeze
-        GIT_HTTPS_REGEXP = %r{\Ahttps://(?<host>[^/]+)/(?<path>.+?)(?:\.git)?\z}.freeze
+        REMOTE_REGEXP    = /\A[^\t]+\t(?<url>[^ ]+) \((?:fetch|push)\)\n\z/
+        GIT_SSH_REGEXP   = %r{\A[^@]+@(?<host>[^:/]+)[:/](?<path>.+?)(?:\.git)?\z}
+        GIT_HTTPS_REGEXP = %r{\Ahttps://(?<host>[^/]+)/(?<path>.+?)(?:\.git)?\z}
         WILDCARD         = '/*'
-        WILDCARD_RANGE   = (..-WILDCARD.length).freeze
+        WILDCARD_RANGE   = (..-WILDCARD.length)
 
         private_constant(*constants(false))
 

diff --git a/lib/mutant/loader.rb b/lib/mutant/loader.rb
@@ -5,7 +5,7 @@ class Loader
     include Anima.new(:binding, :kernel, :source, :subject)
 
     FROZEN_STRING_FORMAT = "# frozen_string_literal: true\n%s"
-    VOID_VALUE_REGEXP    = /\A[^:]+:\d+: void value expression/.freeze
+    VOID_VALUE_REGEXP    = /\A[^:]+:\d+: void value expression/
 
     private_constant(*constants(false))
 

diff --git a/lib/mutant/matcher/config.rb b/lib/mutant/matcher/config.rb
@@ -11,7 +11,7 @@ class Config
         :diffs
       )
 
-      INSPECT_FORMAT      = "#<#{self} %s>"
+      INSPECT_FORMAT      = "#<#{self} %s>".freeze
       ATTRIBUTE_DELIMITER = ' '
       ATTRIBUTE_FORMAT    = '%s: [%s]'
       ENUM_DELIMITER      = ','

diff --git a/lib/mutant/mutation.rb b/lib/mutant/mutation.rb
@@ -7,7 +7,7 @@ class Mutation
     include Anima.new(:subject, :node)
 
     CODE_DELIMITER = "\0"
-    CODE_RANGE     = (..4).freeze
+    CODE_RANGE     = (..4)
 
     # Mutation identification code
     #

diff --git a/lib/mutant/mutator/node/index.rb b/lib/mutant/mutator/node/index.rb
@@ -5,7 +5,7 @@ class Mutator
     class Node
       # Base mutator for index operations
       class Index < self
-        NO_VALUE_RANGE    = (1..-1).freeze
+        NO_VALUE_RANGE    = (1..-1)
         SEND_REPLACEMENTS = %i[at fetch key?].freeze
 
         private_constant(*constants(false))
@@ -67,7 +67,7 @@ def index_range
 
         # Mutator for index assignments
         class Assign < self
-          REGULAR_RANGE = (1..-2).freeze
+          REGULAR_RANGE = (1..-2)
 
           private_constant(*constants(false))
 

diff --git a/lib/mutant/mutator/node/named_value/access.rb b/lib/mutant/mutator/node/named_value/access.rb
@@ -18,7 +18,7 @@ def dispatch
 
           # Named value access emitter for instance variables
           class Ivar < Access
-            NAME_RANGE = (1..-1).freeze
+            NAME_RANGE = (1..-1)
 
             handle(:ivar)
 

diff --git a/lib/mutant/mutator/node/rescue.rb b/lib/mutant/mutator/node/rescue.rb
@@ -12,7 +12,7 @@ class Rescue < self
 
         define_named_child(:else_body, -1)
 
-        RESCUE_INDICES = (1..-2).freeze
+        RESCUE_INDICES = (1..-2)
 
       private
 

diff --git a/lib/mutant/mutator/node/send/attribute_assignment.rb b/lib/mutant/mutator/node/send/attribute_assignment.rb
@@ -7,7 +7,7 @@ class Send
         # Mutator for attribute assignments
         class AttributeAssignment < self
 
-          ATTRIBUTE_RANGE = (..-2).freeze
+          ATTRIBUTE_RANGE = (..-2)
 
           private_constant(*constants(false))
 

diff --git a/lib/mutant/repository/diff.rb b/lib/mutant/repository/diff.rb
@@ -6,7 +6,7 @@ module Repository
     class Diff
       include Adamantium, Anima.new(:world, :to)
 
-      FORMAT = /\A:\d{6} \d{6} [a-f\d]{40} [a-f\d]{40} [ACDMRTUX]\t(.*)\n\z/.freeze
+      FORMAT = /\A:\d{6} \d{6} [a-f\d]{40} [a-f\d]{40} [ACDMRTUX]\t(.*)\n\z/
 
       private_constant(*constants(false))
 
@@ -85,8 +85,8 @@ def parse_line(root, line)
       class Path
         include Adamantium, Anima.new(:world, :to, :path)
 
-        DECIMAL = /(?:0|[1-9]\d*)/.freeze
-        REGEXP  = /\A@@ -(#{DECIMAL})(?:,(#{DECIMAL}))? \+(#{DECIMAL})(?:,(#{DECIMAL}))? @@/.freeze
+        DECIMAL = /(?:0|[1-9]\d*)/
+        REGEXP  = /\A@@ -(#{DECIMAL})(?:,(#{DECIMAL}))? \+(#{DECIMAL})(?:,(#{DECIMAL}))? @@/
 
         private_constant(*constants(false))
 

diff --git a/lib/mutant/repository/diff/ranges.rb b/lib/mutant/repository/diff/ranges.rb
@@ -4,8 +4,8 @@ module Mutant
   module Repository
     class Diff
       module Ranges
-        DECIMAL = /(?:0|[1-9]\d*)/.freeze
-        REGEXP  = /\A@@ -(#{DECIMAL})(?:,(#{DECIMAL}))? \+(#{DECIMAL})(?:,(#{DECIMAL}))? @@/.freeze
+        DECIMAL = /(?:0|[1-9]\d*)/
+        REGEXP  = /\A@@ -(#{DECIMAL})(?:,(#{DECIMAL}))? \+(#{DECIMAL})(?:,(#{DECIMAL}))? @@/
 
         private_constant(*constants(false))
 

diff --git a/lib/mutant/subject/config.rb b/lib/mutant/subject/config.rb
@@ -7,8 +7,8 @@ class Config
 
       DEFAULT = new(inline_disable: false, mutation: Mutation::Config::DEFAULT)
 
-      DISABLE_REGEXP = /(\s|^)mutant:disable(?:\s|$)/.freeze
-      SYNTAX_REGEXP  = /\A(?:#|=begin\n)/.freeze
+      DISABLE_REGEXP = /(\s|^)mutant:disable(?:\s|$)/
+      SYNTAX_REGEXP  = /\A(?:#|=begin\n)/
 
       def self.parse(comments:, mutation:)
         new(

diff --git a/mutant-minitest.gemspec b/mutant-minitest.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |gem|
 
   gem.extra_rdoc_files = %w[LICENSE]
 
-  gem.required_ruby_version = '>= 2.7'
+  gem.required_ruby_version = '>= 3.0'
 
   gem.metadata['rubygems_mfa_required'] = 'true'
 

diff --git a/mutant-rspec.gemspec b/mutant-rspec.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |gem|
 
   gem.metadata['rubygems_mfa_required'] = 'true'
 
-  gem.required_ruby_version = '>= 2.7'
+  gem.required_ruby_version = '>= 3.0'
 
   gem.add_runtime_dependency('mutant', "= #{gem.version}")
   gem.add_runtime_dependency('rspec-core', '>= 3.8.0', '< 4.0.0')

diff --git a/mutant.gemspec b/mutant.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |gem|
 
   gem.metadata['rubygems_mfa_required'] = 'true'
 
-  gem.required_ruby_version = '>= 2.7'
+  gem.required_ruby_version = '>= 3.0'
 
   gem.add_runtime_dependency('diff-lcs',       '~> 1.3')
   gem.add_runtime_dependency('parser',         '~> 3.2.2', '>= 3.2.2.4')

diff --git a/spec/integrations.yml b/spec/integrations.yml
@@ -48,9 +48,6 @@
   mutation_coverage: false
   mutation_generation: true
   exclude:
-  # invalid regexp on <2.7 parser
-  - test/corpus/literal/pattern.rb
-  - test/corpus/literal/since/27.rb
   # invalid regexp on <3.0 parser
   - test/corpus/literal/since/30.rb
   # invalid regexp on <3.1 parser

diff --git a/spec/unit/mutant/expression/parser_spec.rb b/spec/unit/mutant/expression/parser_spec.rb
@@ -40,14 +40,14 @@ def apply
       let(:test_a) do
         Class.new(Mutant::Expression) do
           include Unparser::Anima.new
-          const_set(:REGEXP, /\Atest-syntax\z/.freeze)
+          const_set(:REGEXP, /\Atest-syntax\z/)
         end
       end
 
       let(:test_b) do
         Class.new(Mutant::Expression) do
           include Unparser::Anima.new
-          const_set(:REGEXP, /^test-syntax$/.freeze)
+          const_set(:REGEXP, /^test-syntax$/)
         end
       end