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Class: RSpec::Matchers::BuiltIn::HaveAttributes 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/have_attributes.rb

Overview

Provides the implementation for ‘have_attributes`. 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?

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.
#assert_ivars,
#present_ivars

:nocov:

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.

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/have_attributes.rb', line 50



def diffable?
  !@respond_to_failed && !@negated
end


  








  

    #respond_to_attributes?  ⇒ Boolean  (readonly, private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 89



def respond_to_attributes?
  matches = respond_to_matcher.matches?(@actual)
  @respond_to_failed = !matches
  matches
end


  








  

    #respond_to_failed   (readonly)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 9



attr_reader :respond_to_failed


  







Instance Method Details



  

    #actual  
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 19



def actual
  @values
end


  








  

    #actual_has_attribute?(attribute_key, attribute_value)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 85



def actual_has_attribute?(attribute_key, attribute_value)
  values_match?(attribute_value, @values.fetch(attribute_key))
end


  








  

    #cache_all_values   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 70



def cache_all_values
  @values = {}
  expected.each do |attribute_key, _attribute_value|
    actual_value = @actual.__send__(attribute_key)
    @values[attribute_key] = actual_value
  end
end


  








  

    #description  ⇒ String 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 43



def description
  described_items = surface_descriptions_in(expected)
  improve_hash_formatting "have attributes #{RSpec::Support::ObjectFormatter.format(described_items)}"
end


  








  

    #does_not_match?(actual)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 34



def does_not_match?(actual)
  @actual = actual
  @negated = true
  return false unless respond_to_attributes?
  perform_match(:none?)
end


  








  

    #failure_message  ⇒ String 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 56



def failure_message
  respond_to_failure_message_or do
    "expected #{actual_formatted} to #{description} but had attributes #{ formatted_values }"
  end
end


  








  

    #failure_message_when_negated  ⇒ String 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 64



def failure_message_when_negated
  respond_to_failure_message_or { "expected #{actual_formatted} not to #{description}" }
end


  








  

    #formatted_values   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 107



def formatted_values
  values = RSpec::Support::ObjectFormatter.format(@values)
  improve_hash_formatting(values)
end


  








  

    #matches?(actual)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


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



def matches?(actual)
  @actual = actual
  @negated = false
  return false unless respond_to_attributes?
  perform_match(:all?)
end


  








  

    #perform_match(predicate)   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 78



def perform_match(predicate)
  cache_all_values
  expected.__send__(predicate) do |attribute_key, attribute_value|
    actual_has_attribute?(attribute_key, attribute_value)
  end
end


  








  

    #respond_to_failure_message_or   (private)
  

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# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 99



def respond_to_failure_message_or
  if respond_to_failed
    respond_to_matcher.failure_message
  else
    improve_hash_formatting(yield)
  end
end


  








  

    #respond_to_matcher   (private)
  

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# File 'rspec-expectations/lib/rspec/matchers/built_in/have_attributes.rb', line 95



def respond_to_matcher
  @respond_to_matcher ||= RespondTo.new(*expected.keys).with(0).arguments.tap { |m| m.ignoring_method_signature_failure! }
end