Object
# File lib/rspec/expectations/differ.rb, line 44 def diff_as_object(actual,expected) actual = String === actual ? actual : PP.pp(actual,"") expected = String === expected ? expected : PP.pp(expected,"") diff_as_string(actual, expected) end
This is snagged from diff/lcs/ldiff.rb (which is a commandline tool)
# File lib/rspec/expectations/differ.rb, line 12 def diff_as_string(data_new, data_old) 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
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