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