Module: RoadForest::Testing::HelperMethods

Included in:
BeEquivalentGraph
Defined in:
lib/roadforest/test-support/matchers.rb

Instance Method Summary collapse

Instance Method Details

#detect_format(stream) ⇒ Object

Heuristically detect the input stream



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# File 'lib/roadforest/test-support/matchers.rb', line 21

def detect_format(stream)
  # Got to look into the file to see
  if stream.is_a?(IO) || stream.is_a?(StringIO)
    stream.rewind
    string = stream.read(1000)
    stream.rewind
  else
    string = stream.to_s
  end
  case string
  when /<html/i   then RDF::RDFa::Reader
  when /@prefix/i then RDF::Turtle::Reader
  else                 RDF::NTriples::Reader
  end
end

#normalize(graph) ⇒ Object 



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# File 'lib/roadforest/test-support/matchers.rb', line 37

def normalize(graph)
  case graph
  when RDF::Queryable then graph
  when IO, StringIO
    RDF::Graph.new.load(graph, :base_uri => @info.about)
  else
    # Figure out which parser to use
    g = RDF::Graph.new
    reader_class = detect_format(graph)
    reader_class.new(graph, :base_uri => @info.nil? ? nil : @info.about).each {|s| g << s}
    g
  end
end

#statements_from_graph(graph) ⇒ Object 



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# File 'lib/roadforest/test-support/matchers.rb', line 16

def statements_from_graph(graph)
  StatementsFromGraph.new(graph)
end