Class: Spec::ShouldBase

Inherits:
Object show all
Defined in:
lib/spec/api/helper/diff.rb,
lib/spec/api/helper/should_base.rb

Direct Known Subclasses

HaveHelper, ShouldHelper, ShouldNegator

Instance Method Summary collapse

Instance Method Details

#default_message(expectation, expected = :no_expectation_specified) ⇒ Object 



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# File 'lib/spec/api/helper/diff.rb', line 13

def default_message(expectation, expected=:no_expectation_specified)
  result = old_default_message(expectation, expected)
  if expected.is_a?(String)
    result << "\nDiff:" << diff_as_string(@target.to_s, expected)
  end
  result
end

#diff_as_string(data_old, data_new, format = :unified, context_lines = 3) ⇒ Object

This is snagged from diff/lcs/ldiff.rb (which is a commandline tool)



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# File 'lib/spec/api/helper/diff.rb', line 23

def diff_as_string(data_old, data_new, format=:unified, context_lines=3)
  data_old = data_old.split(/\n/).map! { |e| e.chomp }
  data_new = data_new.split(/\n/).map! { |e| e.chomp }
  output = ""
  diffs = Diff::LCS.diff(data_old, data_new)
  return output if diffs.empty?
  oldhunk = hunk = nil  
  file_length_difference = 0
  diffs.each do |piece|
    begin
      hunk = Diff::LCS::Hunk.new(data_old, data_new, piece, context_lines,
                                 file_length_difference)
      file_length_difference = hunk.file_length_difference      
      next unless oldhunk      
      # Hunks may overlap, which is why we need to be careful when our
      # diff includes lines of context. Otherwise, we might print
      # redundant lines.
      if (context_lines > 0) and hunk.overlaps?(oldhunk)
        hunk.unshift(oldhunk)
      else
        output << oldhunk.diff(format)
      end
    ensure
      oldhunk = hunk
      output << "\n"
    end
  end  
  #Handle the last remaining hunk
  output << oldhunk.diff(format) << "\n"
end

#fail_with_message(message) ⇒ Object 



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# File 'lib/spec/api/helper/should_base.rb', line 26

def fail_with_message(message)
  Kernel::raise(Spec::Api::ExpectationNotMetError.new(message))
end

#old_default_message ⇒ Object 



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# File 'lib/spec/api/helper/diff.rb', line 12

alias old_default_message default_message