Module: Test::Unit::Diff

Defined in:
lib/test/unit/diff.rb

Defined Under Namespace

Classes: Differ, ReadableDiffer, SequenceMatcher, UTF8Line, UnifiedDiffer

Class Method Summary collapse

Class Method Details

.diff(differ_class, from, to, options = {}) ⇒ Object 



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# File 'lib/test/unit/diff.rb', line 724

def diff(differ_class, from, to, options={})
  if from.respond_to?(:valid_encoding?) and not from.valid_encoding?
    from = from.dup.force_encoding("ASCII-8BIT")
  end
  if to.respond_to?(:valid_encoding?) and not to.valid_encoding?
    to = to.dup.force_encoding("ASCII-8BIT")
  end
  differ = differ_class.new(from.split(/\r?\n/), to.split(/\r?\n/))
  lines = differ.diff(options)
  if Object.const_defined?(:EncodingError)
    begin
      lines.join("\n")
    rescue EncodingError
      lines.collect {|line| line.force_encoding("ASCII-8BIT")}.join("\n")
    end
  else
    lines.join("\n")
  end
end

.fold(string) ⇒ Object 



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# File 'lib/test/unit/diff.rb', line 706

def fold(string)
  string.split(/\r?\n/).collect do |line|
    line.gsub(/(.{78})/, "\\1\n")
  end.join("\n")
end

.folded_readable(from, to, options = {}) ⇒ Object 



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# File 'lib/test/unit/diff.rb', line 712

def folded_readable(from, to, options={})
  readable(fold(from), fold(to), options)
end

.need_fold?(diff) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/test/unit/diff.rb', line 702

def need_fold?(diff)
  /^[-+].{79}/ =~ diff
end

.readable(from, to, options = {}) ⇒ Object 



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# File 'lib/test/unit/diff.rb', line 716

def readable(from, to, options={})
  diff(ReadableDiffer, from, to, options)
end

.unified(from, to, options = {}) ⇒ Object 



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# File 'lib/test/unit/diff.rb', line 720

def unified(from, to, options={})
  diff(UnifiedDiffer, from, to, options)
end