instiki/test/unit/diff_test.rb

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2005-08-11 07:46:38 +02:00
#!/usr/bin/env ruby
2005-08-09 04:20:28 +02:00
require File.expand_path(File.dirname(__FILE__) + '/../test_helper')
require 'diff'
include Diff
class DiffTest < Test::Unit::TestCase
def test_init
assert_nothing_raised {
s = SequenceMatcher.new('private Thread currentThread;',
'private volatile Thread currentThread;') { |x| x == ' ' }
}
end
def test_matching_blocks
s = SequenceMatcher.new 'abxcd', 'abcd'
assert_equal [[0, 0, 2], [3, 2, 2], [5, 4, 0]], s.get_matching_blocks
end
def test_ratio
s = SequenceMatcher.new 'abcd', 'bcde'
assert_equal 0.75, s.ratio, 0.001
assert_equal 0.75, s.quick_ratio, 0.001
assert_equal 1.0, s.real_quick_ratio, 0.001
end
def test_longest_match
s = SequenceMatcher.new(' abcd', 'abcd abcd')
assert_equal [0, 4, 5], s.find_longest_match(0, 5, 0, 9)
end
def test_opcodes
s = SequenceMatcher.new('qabxcd', 'abycdf')
assert_equal(
[
[:delete, 0, 1, 0, 0],
[:equal, 1, 3, 0, 2],
[:replace, 3, 4, 2, 3],
[:equal, 4, 6, 3, 5],
[:insert, 6, 6, 5, 6]
],
s.get_opcodes)
end
def test_count_leading
assert_equal 3, Diff.count_leading(' abc', ' ')
end
def test_html2list
a = "here is the original text"
assert_equal(
['here ', 'is ', 'the ', 'original ', 'text'],
HTMLDiff.html2list(a))
end
def test_html_diff
a = 'this was the original string'
b = 'this is the super string'
assert_equal('this <del class="diffmod">was </del>' +
'<ins class="diffmod">is </ins>the ' +
'<del class="diffmod">original </del>' +
'<ins class="diffmod">super </ins>string',
HTMLDiff.diff(a, b))
end
def test_html_diff_with_multiple_paragraphs
a = "<p>this was the original string</p>"
b = "<p>this is</p>\r\n<p>the super string</p>\r\n<p>around the world</p>"
assert_equal(
"<p>this <del class=\"diffmod\">was </del>" +
"<ins class=\"diffmod\">is</ins></p>\r\n<p>the " +
"<del class=\"diffmod\">original </del>" +
"<ins class=\"diffmod\">super </ins>string</p>\r\n" +
"<p><ins class=\"diffins\">around the world</ins></p>",
HTMLDiff.diff(a, b)
)
end
# FIXME this test fails (ticket #67, http://dev.instiki.org/ticket/67)
def test_html_diff_preserves_endlines_in_pre
a = "<pre>\na\nb\nc\n</pre>"
b = ''
assert_equal(
"<pre>\n<del class=\"diffdel\">a\nb\nc\n</del></pre>",
HTMLDiff.diff(a, b))
end
end