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Spec::Expectations::Differs::Default

Public Class Methods

new(options) click to toggle source
    # File lib/spec/runner/differs/default.rb, line 9
 9:           def initialize(options)
10:             @options = options
11:           end

Public Instance Methods

diff_as_hash(target, expected) click to toggle source
    # File lib/spec/runner/differs/default.rb, line 49
49:           def diff_as_hash(target, expected)
50:             contains_hash = false
51:             contains_array = false
52:             
53:             extra_expected_keys = expected.keys - target.keys
54:             extra_target_keys = target.keys - expected.keys
55:             
56:             o = "\n"
57:             
58:             o << "Expected hash contains keys that target hash does not: " << extra_expected_keys.inspect << "\n" if !extra_expected_keys.empty?
59:             o << "Target hash contains keys that expected hash does not: " << extra_target_keys.inspect << "\n" if !extra_target_keys.empty?
60:             
61:             expected.delete_if do |key, value|
62:               contains_hash = true if value.is_a?(Hash)
63:               contains_array = true if value.is_a?(Array)
64:               target[key]  == value
65:             end
66:             
67:             expected.keys.sort { |a,b| a.to_s <=> b.to_s }.each do |key|
68:               o << "Expected the key #{key.inspect} to be #{expected[key].inspect}, but was #{target[key].inspect}\n"
69:             end
70:             
71:             o << "\n"
72: 
73:             if contains_hash || contains_array
74:               o << diff_as_object(target, expected)
75:             else
76:               o
77:             end
78:           end
diff_as_object(target,expected) click to toggle source
    # File lib/spec/runner/differs/default.rb, line 45
45:           def diff_as_object(target,expected)
46:             diff_as_string(PP.pp(target,""), PP.pp(expected,""))
47:           end
diff_as_string(data_new, data_old) click to toggle source

This is snagged from diff/lcs/ldiff.rb (which is a commandline tool)

    # File lib/spec/runner/differs/default.rb, line 14
14:           def diff_as_string(data_new, data_old)
15:             data_old = data_old.split(/\n/).map! { |e| e.chomp }
16:             data_new = data_new.split(/\n/).map! { |e| e.chomp }
17:             output = ""
18:             diffs = Diff::LCS.diff(data_old, data_new)
19:             return output if diffs.empty?
20:             oldhunk = hunk = nil  
21:             file_length_difference = 0
22:             diffs.each do |piece|
23:               begin
24:                 hunk = Diff::LCS::Hunk.new(data_old, data_new, piece, context_lines,
25:                                            file_length_difference)
26:                 file_length_difference = hunk.file_length_difference      
27:                 next unless oldhunk      
28:                 # Hunks may overlap, which is why we need to be careful when our
29:                 # diff includes lines of context. Otherwise, we might print
30:                 # redundant lines.
31:                 if (context_lines > 0) and hunk.overlaps?(oldhunk)
32:                   hunk.unshift(oldhunk)
33:                 else
34:                   output << oldhunk.diff(format)
35:                 end
36:               ensure
37:                 oldhunk = hunk
38:                 output << "\n"
39:               end
40:             end  
41:             #Handle the last remaining hunk
42:             output << oldhunk.diff(format) << "\n"
43:           end

Protected Instance Methods

context_lines() click to toggle source
    # File lib/spec/runner/differs/default.rb, line 85
85:           def context_lines
86:             @options.context_lines
87:           end
format() click to toggle source
    # File lib/spec/runner/differs/default.rb, line 81
81:           def format
82:             @options.diff_format
83:           end

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