| 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