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Class: Test::Unit::FaultLocationDetector

Relationships & Source Files
Inherits: Object
Defined in: lib/test/unit/fault-location-detector.rb

Class Method Summary

Instance Method Summary

Constructor Details

.new(fault, code_snippet_fetcher) ⇒ FaultLocationDetector

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# File 'lib/test/unit/fault-location-detector.rb', line 10



def initialize(fault, code_snippet_fetcher)
  @fault = fault
  @code_snippet_fetcher = code_snippet_fetcher
  extract_fault_information
end


  







Instance Method Details



  

    #extract_fault_information   (private)
  

  [ GitHub ]


  

  


# File 'lib/test/unit/fault-location-detector.rb', line 85



def extract_fault_information
  if @fault.respond_to?(:source_location)
    @fault_source_location = @fault.source_location
  else
    @fault_source_location = nil
  end

  if @fault.respond_to?(:method_name)
    @fault_method_name = @fault.method_name
  else
    @fault_method_name = nil
  end
end


  








  

    #guess_indent_level(line)   (private)
  

  [ GitHub ]


  

  


# File 'lib/test/unit/fault-location-detector.rb', line 77



def guess_indent_level(line)
  if /\A(\s*)/ =~ line
    $1.sub(/\t/, " " * 8).count(" ")
  else
    0
  end
end


  








  

    #split_backtrace_entry(entry)  
  

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# File 'lib/test/unit/fault-location-detector.rb', line 16



def split_backtrace_entry(entry)
  match_data = /\A(.):(\d)(?::(.*))?\z/.match(entry)
  return nil if match_data.nil?
  file, line_number, context = match_data.to_a[1..-1]
  line_number = line_number.to_i
  if /\Ain [`'](.+?)'/ =~ context
    method_name = $1
    if /\Ablock (?:\(.+?\) )?in / =~ method_name
      method_name = $POSTMATCH
    end
  else
    method_name = nil
  end
  [file, line_number, context, method_name]
end


  








  

    #target?(backtrace_entry)  ⇒ Boolean 
  



  

    
  





  


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# File 'lib/test/unit/fault-location-detector.rb', line 32



def target?(backtrace_entry)
  file, line_number, context, method_name =
    split_backtrace_entry(backtrace_entry)
  _ = context
  return false if file.nil?

  if @fault_source_location
    target_source_location?(file, line_number, method_name)
  elsif @fault_method_name
    target_method?(method_name)
  else
    true
  end
end


  








  

    #target_method?(method_name)  ⇒ Boolean  (private)
  



  

    
  





  


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# File 'lib/test/unit/fault-location-detector.rb', line 73



def target_method?(method_name)
  @fault_method_name == method_name
end


  








  

    #target_source_location?(file, line_number, method_name)  ⇒ Boolean  (private)
  



  

    
  





  


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# File 'lib/test/unit/fault-location-detector.rb', line 48



def target_source_location?(file, line_number, method_name)
  fault_file, fault_line_number = @fault_source_location
  return false unless file.end_with?(fault_file)

  return false if line_number < fault_line_number

  lines = @code_snippet_fetcher.source(file)
  return false if lines.nil?

  base_indent_level = nil
  fault_line_number.step(lines.size) do |current_line_number|
    line = lines[current_line_number - 1]
    current_indent_level = guess_indent_level(line)
    base_indent_level ||= current_indent_level
    return true if current_line_number == line_number

    if current_line_number == fault_line_number
      break if /(?:\send|\})\s*$/ =~ line
    else
      break if current_indent_level == base_indent_level
    end
  end
  false
end