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Module: RSpec::Core::Metadata

Relationships & Source Files
Namespace Children
Classes:
ExampleGroupHash, ExampleHash, HashPopulator
Defined in: rspec-core/lib/rspec/core/metadata.rb

Overview

Each ExampleGroup class and Example instance owns an instance of Metadata, which is Hash extended to support lazy evaluation of values associated with keys that may or may not be used by any example or group.

In addition to metadata that is used internally, this also stores user-supplied metadata, e.g.

RSpec.describe Something, :type => :ui do
  it "does something", :slow => true do
    # ...
  end
end

‘:type => :ui` is stored in the Metadata owned by the example group, and `:slow => true` is stored in the Metadata owned by the example. These can then be used to select which examples are run using the –tag option on the command line, or several methods on Configuration used to filter a run (e.g. filter_run_including, filter_run_excluding, etc).

See Also:

Constant Summary

  • RESERVED_KEYS = Internal use only
    # File 'rspec-core/lib/rspec/core/metadata.rb', line 325 
    [
  :description,
  :description_args,
  :described_class,
  :example_group,
  :parent_example_group,
  :execution_result,
  :last_run_status,
  :file_path,
  :absolute_file_path,
  :rerun_file_path,
  :full_description,
  :line_number,
  :location,
  :scoped_id,
  :block,
  :shared_group_inclusion_backtrace
]

Class Method Summary

Class Method Details

.ascend(metadata)

This method is for internal use only.

Returns an enumerator that iteratively walks up the given metadata through all example group ancestors, yielding each metadata hash along the way.

[ GitHub ] 

  


# File 'rspec-core/lib/rspec/core/metadata.rb', line 71



def self.ascend(metadata)
  enum_for(:ascending, metadata)
end


  








  

    .ascending(metadata) {|metadata| ... } 
  

  

    This method is for internal use only.
  



  

    

Iteratively walks up from the given metadata through all example group ancestors, yielding each metadata hash along the way.


  





  
Yields:


    
  
  • 
    (metadata)
  
    • 





  [ GitHub ]


  

  


# File 'rspec-core/lib/rspec/core/metadata.rb', line 58



def self.ascending(metadata)
  yield metadata
  return unless (group_metadata = metadata.fetch(:example_group) { metadata[:parent_example_group] })

  loop do
    yield group_metadata
    break unless (group_metadata = group_metadata[:parent_example_group])
  end
end


  








  

    .build_hash_from(args, warn_about_example_group_filtering = false)  
  

  

    This method is for internal use only.
  



  

    

Used internally to build a hash from an args array. Symbols are converted into hash keys with a value of ‘true`. This is done to support simple tagging using a symbol, rather than needing to do `:symbol => true`.


  





  


  [ GitHub ]


  

  


# File 'rspec-core/lib/rspec/core/metadata.rb', line 80



def self.build_hash_from(args, warn_about_example_group_filtering=false)
  hash = args.last.is_a?(Hash) ? args.pop : {}

  hash[args.pop] = true while args.last.is_a?(Symbol)

  if warn_about_example_group_filtering && hash.key?(:example_group)
    RSpec.deprecate("Filtering by an `:example_group` subhash",
                    :replacement => "the subhash to filter directly")
  end

  hash
end


  








  

    .deep_hash_dup(object)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'rspec-core/lib/rspec/core/metadata.rb', line 94



def self.deep_hash_dup(object)
  return object.dup if Array === object
  return object unless Hash  === object

  object.inject(object.dup) do |duplicate, (key, value)|
    duplicate[key] = deep_hash_dup(value)
    duplicate
  end
end


  








  

    .id_from(metadata)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'rspec-core/lib/rspec/core/metadata.rb', line 105



def self.id_from(metadata)
  "#{metadata[:rerun_file_path]}[#{metadata[:scoped_id]}]"
end


  








  

    .location_tuple_from(metadata)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'rspec-core/lib/rspec/core/metadata.rb', line 110



def self.location_tuple_from(metadata)
  [metadata[:absolute_file_path], metadata[:line_number]]
end


  








  

    .relative_path(line)  ⇒ String 
  

  

    This method is for internal use only.
  



  

    
  





  
Parameters:


    
  
  • 
    line
    (String)
—    
    

    current code line
    

    
  
    • 



Returns:


    
  
  • 
    (String)
—    
    

    relative path to line
    

    
  
    • 





  [ GitHub ]


  

  


# File 'rspec-core/lib/rspec/core/metadata.rb', line 44



def self.relative_path(line)
  line = line.sub(relative_path_regex, "\\1.\\2".freeze)
  line = line.sub(/\A([^:]+:\d+)$/, '\\1'.freeze)
  return nil if line == '-e:1'.freeze
  line
rescue SecurityError
  # :nocov:
  nil
  # :nocov:
end


  








  

    .relative_path_regex  
  



  

    

Matches strings either at the beginning of the input or prefixed with a whitespace, containing the current path, either postfixed with the separator, or at the end of the string. Match groups are the character before and the character after the string if any.



rubular.com/r/fT0gmX6VJX rubular.com/r/duOrD4i3wb rubular.com/r/sbAMHFrOx1


  



  [ GitHub ]


  

  


# File 'rspec-core/lib/rspec/core/metadata.rb', line 36



def self.relative_path_regex
  @relative_path_regex ||= /(\A|\s)#{File.expand_path('.')}(#{File::SEPARATOR}|\s|\Z)/
end