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Class: RSpec::Matchers::MultiMatcherDiff Private

Do not use. This class is for internal use only.
Relationships & Source Files
Inherits: Object
Defined in: rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb

Overview

Handles list of expected and actual value pairs when there is a need to render multiple diffs. Also can handle one pair.

Constant Summary

Class Method Summary

Instance Method Summary

Class Method Details

.diff_label_for(matcher) (private)

[ GitHub ] 

  


# File 'rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb', line 58



def diff_label_for(matcher)
  "Diff for (#{truncated(RSpec::Support::ObjectFormatter.format(matcher))}):"
end


  








  

    .for_many_matchers(matchers)  ⇒ MultiMatcherDiff 
  



  

    

Wraps provided matcher list in instance of MultiMatcherDiff.


  





  
Parameters:


    
  
  • 
    matchers
    (Array<Any>)
—    
    

    list of matchers to wrap
    

    
  
    • 





  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb', line 37



def self.for_many_matchers(matchers)
  new(matchers.map { |m| [m.expected, diff_label_for(m), m.actual] })
end


  








  

    .from(expected, actual)  ⇒ MultiMatcherDiff 
  



  

    

Wraps provided expected value in instance of MultiMatcherDiff. If provided value is already an MultiMatcherDiff then it just returns it.


  





  
Parameters:


    
  
  • 
    expected
    (Any)
—    
    

    value to be wrapped
    

    
  
    • 
  
  • 
    actual
    (Any)
—    
    

    value
    

    
  
    • 





  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb', line 27



def self.from(expected, actual)
  return expected if self === expected
  new([[expected, DEFAULT_DIFF_LABEL, actual]])
end


  








  

    .truncated(description)   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb', line 62



def truncated(description)
  return description if description.length <= DESCRIPTION_MAX_LENGTH
  description[0...DESCRIPTION_MAX_LENGTH - 3] << "..."
end


  







Instance Method Details



  

    #diffs(differ)   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb', line 68



def diffs(differ)
  @expected_list.map do |(expected, diff_label, actual)|
    diff = differ.diff(actual, expected)
    next if diff.strip.empty?
    if diff == "\e[0m\n\e[0m"
      "#{diff_label}\n" \
        "  <The diff is empty, are your objects producing identical `#inspect` output?>"
    else
      "#{diff_label}#{diff}"
    end
  end.compact.join("\n")
end


  








  

    #message_with_diff(message, differ)  ⇒ String 
  



  

    

Returns message with diff(s) appended for provided differ factory and actual value if there are any


  





  
Parameters:


    
  
  • 
    message
    (String)
—    
    

    original failure message
    

    
  
    • 
  
  • 
    differ
    (Proc)
  
    • 





  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb', line 47



def message_with_diff(message, differ)
  diff = diffs(differ)
  message = "#{message}\n#{diff}" unless diff.empty?
  message
end