instiki/test/unit/diff_test.rb

111 lines
3.5 KiB
Ruby
Executable file

#!/usr/bin/env ruby
require File.expand_path(File.dirname(__FILE__) + '/../test_helper')
require 'diff'
class DiffTest < Test::Unit::TestCase
include HTMLDiff
def setup
@builder = DiffBuilder.new('old', 'new')
end
def test_start_of_tag
assert @builder.start_of_tag?('<')
assert(!@builder.start_of_tag?('>'))
assert(!@builder.start_of_tag?('a'))
end
def test_end_of_tag
assert @builder.end_of_tag?('>')
assert(!@builder.end_of_tag?('<'))
assert(!@builder.end_of_tag?('a'))
end
def test_whitespace
assert @builder.whitespace?(" ")
assert @builder.whitespace?("\n")
assert @builder.whitespace?("\r")
assert(!@builder.whitespace?("a"))
end
def test_convert_html_to_list_of_words_simple
assert_equal(
['the', ' ', 'original', ' ', 'text'],
@builder.convert_html_to_list_of_words('the original text'))
end
def test_convert_html_to_list_of_words_should_separate_endlines
assert_equal(
['a', "\n", 'b', "\r", 'c'],
@builder.convert_html_to_list_of_words("a\nb\rc"))
end
def test_convert_html_to_list_of_words_should_not_compress_whitespace
assert_equal(
['a', ' ', 'b', ' ', 'c', "\r \n ", 'd'],
@builder.convert_html_to_list_of_words("a b c\r \n d"))
end
def test_convert_html_to_list_of_words_should_handle_tags_well
assert_equal(
['<p>', 'foo', ' ', 'bar', '</p>'],
@builder.convert_html_to_list_of_words("<p>foo bar</p>"))
end
def test_convert_html_to_list_of_words_interesting
assert_equal(
['<p>', 'this', ' ', 'is', '</p>', "\r\n", '<p>', 'the', ' ', 'new', ' ', 'string',
'</p>', "\r\n", '<p>', 'around', ' ', 'the', ' ', 'world', '</p>'],
@builder.convert_html_to_list_of_words(
"<p>this is</p>\r\n<p>the new string</p>\r\n<p>around the world</p>"))
end
def test_html_diff_simple
a = 'this was the original string'
b = 'this is the new string'
assert_equal('this <del class="diffmod">was</del><ins class="diffmod">is</ins> the ' +
'<del class="diffmod">original</del><ins class="diffmod">new</ins> string',
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 new string</p>\r\n<p>around the world</p>"
# Some of this expected result is accidental to implementation.
# At least it's well-formed and more or less correct.
assert_equal(
"<p>this <del class=\"diffmod\">was</del><ins class=\"diffmod\">is</ins></p>"+
"<ins class=\"diffmod\">\r\n</ins><p> the " +
"<del class=\"diffmod\">original</del><ins class=\"diffmod\">new</ins>" +
" string</p><ins class=\"diffins\">\r\n</ins>" +
"<p><ins class=\"diffins\">around the world</ins></p>",
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 = "<pre>\n</pre>"
assert_equal(
"<pre>\n<del class=\"diffdel\">a\nb\nc\n</del></pre>",
diff(a, b))
end
def test_html_diff_with_tags
a = ""
b = "<div>foo</div>"
assert_equal '<div><ins class="diffins">foo</ins></div>', diff(a, b)
end
def test_diff_for_tag_change
a = "<a>x</a>"
b = "<b>x</b>"
# FIXME sad, but true - this case produces an invalid XML. If handle this you can, strong your foo is.
assert_equal '<a><b>x</a></b>', diff(a, b)
end
end