Class | Spec::Expectations::Differs::Default |
In: |
lib/spec/expectations/differs/default.rb
|
Parent: | Object |
TODO add some rdoc
# File lib/spec/expectations/differs/default.rb, line 15 15: def initialize(format=:unified,context_lines=nil,colour=nil) 16: 17: context_lines ||= 3 18: colour ||= false 19: 20: @format,@context_lines,@colour = format,context_lines,colour 21: end
# File lib/spec/expectations/differs/default.rb, line 55 55: def diff_as_object(target,expected) 56: diff_as_string(PP.pp(target,""), PP.pp(expected,"")) 57: end
This is snagged from diff/lcs/ldiff.rb (which is a commandline tool)
# File lib/spec/expectations/differs/default.rb, line 24 24: def diff_as_string(data_old, data_new) 25: data_old = data_old.split(/\n/).map! { |e| e.chomp } 26: data_new = data_new.split(/\n/).map! { |e| e.chomp } 27: output = "" 28: diffs = Diff::LCS.diff(data_old, data_new) 29: return output if diffs.empty? 30: oldhunk = hunk = nil 31: file_length_difference = 0 32: diffs.each do |piece| 33: begin 34: hunk = Diff::LCS::Hunk.new(data_old, data_new, piece, @context_lines, 35: file_length_difference) 36: file_length_difference = hunk.file_length_difference 37: next unless oldhunk 38: # Hunks may overlap, which is why we need to be careful when our 39: # diff includes lines of context. Otherwise, we might print 40: # redundant lines. 41: if (@context_lines > 0) and hunk.overlaps?(oldhunk) 42: hunk.unshift(oldhunk) 43: else 44: output << oldhunk.diff(@format) 45: end 46: ensure 47: oldhunk = hunk 48: output << "\n" 49: end 50: end 51: #Handle the last remaining hunk 52: output << oldhunk.diff(@format) << "\n" 53: end