Parent

RSpec::Support::Differ

Attributes

color[R]
color?[R]

Public Class Methods

new(opts={}) click to toggle source
# File lib/rspec/support/differ.rb, line 63
def initialize(opts={})
  @color = opts.fetch(:color, false)
  @object_preparer = opts.fetch(:object_preparer, lambda { |string| string })
end

Public Instance Methods

diff(actual, expected) click to toggle source
# File lib/rspec/support/differ.rb, line 9
def diff(actual, expected)
  diff = ""

  if actual && expected
    if all_strings?(actual, expected)
      if any_multiline_strings?(actual, expected)
        diff = diff_as_string(coerce_to_string(actual), coerce_to_string(expected))
      end
    elsif no_procs?(actual, expected) && no_numbers?(actual, expected)
      diff = diff_as_object(actual, expected)
    end
  end

  diff.to_s
end
diff_as_object(actual, expected) click to toggle source
# File lib/rspec/support/differ.rb, line 54
def diff_as_object(actual, expected)
  actual_as_string = object_to_string(actual)
  expected_as_string = object_to_string(expected)
  diff_as_string(actual_as_string, expected_as_string)
end
diff_as_string(actual, expected) click to toggle source
# File lib/rspec/support/differ.rb, line 25
def diff_as_string(actual, expected)
  @encoding = pick_encoding actual, expected

  @actual   = EncodedString.new(actual, @encoding)
  @expected = EncodedString.new(expected, @encoding)

  output = EncodedString.new("\n", @encoding)

  hunks.each_cons(2) do |prev_hunk, current_hunk|
    begin
      if current_hunk.overlaps?(prev_hunk)
        add_old_hunk_to_hunk(current_hunk, prev_hunk)
      else
        add_to_output(output, prev_hunk.diff(format).to_s)
      end
    ensure
      add_to_output(output, "\n")
    end
  end

  if hunks.last
    finalize_output(output, hunks.last.diff(format).to_s)
  end

  color_diff output
rescue Encoding::CompatibilityError
  handle_encoding_errors
end

[Validate]

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