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Class: RSpec::Matchers::BuiltIn::Match Private

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, BaseMatcher
Instance Chain:
self, BaseMatcher, BaseMatcher::DefaultFailureMessages, BaseMatcher::StringEncodingFormatting, BaseMatcher::HashFormatting, ::RSpec::Matchers::Composable
Inherits: RSpec::Matchers::BuiltIn::BaseMatcher
Defined in: rspec-expectations/lib/rspec/matchers/built_in/match.rb

Overview

Provides the implementation for #match. Not intended to be instantiated directly.

Constant Summary

BaseMatcher - Inherited

UNDEFINED

Class Method Summary

BaseMatcher - Inherited

.matcher_name, .new,
.underscore

Borrowed from ActiveSupport.

Instance Attribute Summary

BaseMatcher - Inherited

#actual,
#diffable?

::RSpec::Matchers are not diffable by default.
#expected, #expects_call_stack_jump?, #matcher_name, #matcher_name=, #rescued_exception,
#supports_block_expectations?

Most matchers are value matchers (i.e. meant to work with ‘expect(value)`) rather than block matchers (i.e. meant to work with `expect { }`), so this defaults to false.
#supports_value_expectations?

BaseMatcher::StringEncodingFormatting - Included

#string_encoding_differs?

:nocov:

Instance Method Summary

BaseMatcher - Inherited

#actual_formatted,
#description

Generates a description using ::RSpec::Matchers::EnglishPhrasing.
#expected_formatted,
#match_unless_raises

Used to wrap a block of code that will indicate failure by raising one of the named exceptions.
#matches?

Indicates if the match is successful.

BaseMatcher::DefaultFailureMessages - Included

#failure_message

Provides a good generic failure message.
#failure_message_when_negated

Provides a good generic negative failure message.

BaseMatcher::StringEncodingFormatting - Included

#format_encoding

Formats a String’s encoding as a human readable string :nocov:

BaseMatcher::HashFormatting - Included

#improve_hash_formatting

‘{ :a => 5, :b => 2 }.inspect` produces:

::RSpec::Matchers::Composable - Included

#&

Alias for Composable#and.
#===

Delegates to #matches?.
#and

Creates a compound and expectation.
#description_of

Returns the description of the given object in a way that is aware of composed matchers.
#or

Creates a compound or expectation.
#values_match?

This provides a generic way to fuzzy-match an expected value against an actual value.
#|

Alias for Composable#or.
#should_enumerate?

We should enumerate arrays as long as they are not recursive.
#surface_descriptions_in

Transforms the given data structure (typically a hash or array) into a new data structure that, when #inspect is called on it, will provide descriptions of any contained matchers rather than the normal #inspect output.
#unreadable_io?,
#with_matchers_cloned

Historically, a single matcher instance was only checked against a single value.

Instance Attribute Details

#diffable? ⇒ Boolean (readonly)

[ GitHub ] 

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/match.rb', line 25



def diffable?
  true
end


  







Instance Method Details



  

    #can_safely_call_match?(expected, actual)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/match.rb', line 45



def can_safely_call_match?(expected, actual)
  return false unless actual.respond_to?(:match)

  !(RSpec::Matchers.is_a_matcher?(expected) &&
    (String === actual || Regexp === actual))
end


  








  

    #description  ⇒ String 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/match.rb', line 15



def description
  if @expected_captures && @expected.match(actual)
    "match #{surface_descriptions_in(expected).inspect} with captures #{surface_descriptions_in(@expected_captures).inspect}"
  else
    "match #{surface_descriptions_in(expected).inspect}"
  end
end


  








  

    #match(expected, actual)   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/match.rb', line 38



def match(expected, actual)
  return match_captures(expected, actual) if @expected_captures
  return true if values_match?(expected, actual)
  return false unless can_safely_call_match?(expected, actual)
  actual.match(expected)
end


  








  

    #match_captures(expected, actual)   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/match.rb', line 52



def match_captures(expected, actual)
  match = actual.match(expected)
  if match
    match = ReliableMatchData.new(match)
    if match.names.empty?
      values_match?(@expected_captures, match.captures)
    else
      expected_matcher = @expected_captures.last
      values_match?(expected_matcher, Hash[match.names.zip(match.captures)]) ||
        values_match?(expected_matcher, Hash[match.names.map(&:to_sym).zip(match.captures)]) ||
        values_match?(@expected_captures, match.captures)
    end
  else
    false
  end
end


  








  

    #with_captures(*captures)  ⇒ self 
  



  

    

Used to specify the captures we match against


  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/match.rb', line 31



def with_captures(*captures)
  @expected_captures = captures
  self
end