Class: ScraperWiki::API::Matchers::FieldKeyMatcher

Inherits:
FieldMatcher show all
Defined in:
lib/scraperwiki-api/matchers.rb

Instance Method Summary collapse

Methods inherited from FieldMatcher

#at, #blank?, #failure_description, #in, #matcher, #matches, #mismatches, #negative_failure_description

Methods inherited from DatastoreMatcher

#does_not_match?, #failure_description, #failure_message, #failure_size, #failures, #items, #matches, #matches?, #mismatches, #negative_failure_description, #negative_failure_message

Methods inherited from CustomMatcher

#does_not_match?, #failure_message, #initialize, #matches?, #negative_failure_message

Constructor Details

This class inherits a constructor from ScraperWiki::API::Matchers::CustomMatcher

Instance Method Details

#difference(v) ⇒ Object

Raises:

  • (NotImplementerError) 


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# File 'lib/scraperwiki-api/matchers.rb', line 725

def difference(v)
  raise NotImplementerError, 'Subclasses must implement this method'
end

#failure_predicate ⇒ Object 



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# File 'lib/scraperwiki-api/matchers.rb', line 729

def failure_predicate
  "#{predicate}: #{difference.join ', '}"
end

#match?(v) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scraperwiki-api/matchers.rb', line 708

def match?(v)
  w = Yajl::Parser.parse v
  if Hash === w
    difference(w).empty?
  elsif Array === w
    w.all? do |x|
      if Hash === x
        difference(x).empty?
      else
        raise NotImplementerError, 'Can only handle subfields that are hashes or arrays of hashes'
      end
    end
  else
    raise NotImplementerError, 'Can only handle subfields that are hashes or arrays of hashes'
  end
end

#negative_failure_predicate ⇒ Object 



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# File 'lib/scraperwiki-api/matchers.rb', line 733

def negative_failure_predicate
  "#{negative_predicate}: #{difference.join ', '}"
end