blob: 0fc077e402b548ecc3037c018ad880f5bccb588e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
# -*- ruby encoding: utf-8 -*-
require 'spec_helper'
describe "Diff::LCS.__lcs" do
include Diff::LCS::SpecHelper::Matchers
it "should return a meaningful LCS array with (seq1, seq2)" do
res = Diff::LCS.__lcs(seq1, seq2)
# The result of the LCS (less the +nil+ values) must be as long as the
# correct result.
res.compact.size.should == correct_lcs.size
res.should correctly_map_sequence(seq1).to_other_sequence(seq2)
# Compact these transformations and they should be the correct LCS.
x_seq1 = (0...res.size).map { |ix| res[ix] ? seq1[ix] : nil }.compact
x_seq2 = (0...res.size).map { |ix| res[ix] ? seq2[res[ix]] : nil }.compact
x_seq1.should == correct_lcs
x_seq2.should == correct_lcs
end
it "should return all indexes with (hello, hello)" do
Diff::LCS.__lcs(hello, hello).should == (0...hello.size).to_a
end
it "should return all indexes with (hello_ary, hello_ary)" do
Diff::LCS.__lcs(hello_ary, hello_ary).should == (0...hello_ary.size).to_a
end
end
describe "Diff::LCS.LCS" do
include Diff::LCS::SpecHelper::Matchers
it "should return the correct compacted values from Diff::LCS.LCS" do
res = Diff::LCS.LCS(seq1, seq2)
res.should == correct_lcs
res.compact.should == res
end
it "should be transitive" do
res = Diff::LCS.LCS(seq2, seq1)
res.should == correct_lcs
res.compact.should == res
end
it "should return %W(h e l l o) with (hello, hello)" do
Diff::LCS.LCS(hello, hello).should == hello.split(//)
end
it "should return hello_ary with (hello_ary, hello_ary)" do
Diff::LCS.LCS(hello_ary, hello_ary).should == hello_ary
end
end
# vim: ft=ruby
|
