104 lines
3.5 KiB
Ruby
Executable file
104 lines
3.5 KiB
Ruby
Executable file
#!/usr/bin/env ruby
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require File.expand_path(File.dirname(__FILE__) + '/../test_helper')
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require 'xhtmldiff'
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class DiffTest < Test::Unit::TestCase
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def setup
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end
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def diff(a,b)
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diff_doc = REXML::Document.new
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diff_doc << (div = REXML::Element.new 'div' )
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hd = XHTMLDiff.new(div)
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parsed_a = REXML::HashableElementDelegator.new(
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REXML::XPath.first(REXML::Document.new("<div>"+a+"</div>"), '/div'))
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parsed_b = REXML::HashableElementDelegator.new(
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REXML::XPath.first(REXML::Document.new("<div>"+b+"</div>"), '/div'))
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Diff::LCS.traverse_balanced(parsed_a, parsed_b, hd)
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diffs = ''
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diff_doc.write(diffs, -1, true, true)
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diffs
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end
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def test_html_diff_simple
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a = 'this was the original string'
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b = 'this is the new string'
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assert_equal("<div><span> this<del class='diffmod'> was</del><ins class='diffmod'> is</ins> the" +
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"<del class='diffmod'> original</del><ins class='diffmod'> new</ins> string</span></div>",
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diff(a, b))
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end
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def test_html_diff_with_multiple_paragraphs
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a = "<p>this was the original string</p>"
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b = "<p>this is</p>\n<p> the new string</p>\n<p>around the world</p>"
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assert_equal(
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"<div><p><span> this<del class='diffmod'> was</del><ins class='diffmod'> is</ins>" +
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"<del class='diffdel'> the</del><del class='diffdel'> original</del><del class='diffdel'> string</del></span></p>" +
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"<ins class='diffins'>\n</ins><ins class='diffins'><p> the new string</p></ins>" +
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"<ins class='diffins'>\n</ins><ins class='diffins'><p>around the world</p></ins></div>",
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diff(a, b))
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end
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def test_html_diff_deleting_a_paragraph
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a = "<p>this is a paragraph</p>\n<p>this is a second paragraph</p>\n<p>this is a third paragraph</p>"
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b = "<p>this is a paragraph</p>\n<p>this is a third paragraph</p>"
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assert_equal(
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"<div><p>this is a paragraph</p>\n<del class='diffdel'><p>this is a second paragraph</p></del>" +
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"<del class='diffdel'>\n</del><p>this is a third paragraph</p></div>",
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diff(a, b))
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end
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def test_split_paragraph_into_two
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a = "<p>foo bar</p>"
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b = "<p>foo</p><p>bar</p>"
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assert_equal(
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"<div><p><span> foo<del class='diffdel'> bar</del></span></p>" +
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"<ins class='diffins'><p>bar</p></ins></div>",
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diff(a,b))
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end
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def test_join_two_paragraphs_into_one
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a = "<p>foo</p><p>bar</p>"
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b = "<p>foo bar</p>"
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assert_equal(
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"<div><p><span> foo<ins class='diffins'> bar</ins></span></p>" +
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"<del class='diffdel'><p>bar</p></del></div>",
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diff(a,b))
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end
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def test_add_inline_element
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a = "<p>foo bar</p>"
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b = "<p>foo <b>bar</b></p>"
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assert_equal(
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"<div><p><span> foo<del class='diffdel'> bar</del></span>" +
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"<ins class='diffins'><b>bar</b></ins></p></div>",
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diff(a,b))
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end
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# FIXME this test fails (ticket #67, http://dev.instiki.org/ticket/67)
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def test_html_diff_preserves_endlines_in_pre
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a = "<pre>a\nb\nc\n</pre>"
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b = "<pre>a\n</pre>"
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assert_equal(
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"<div><pre><span> a\n<del class='diffdel'>b\nc\n</del></span></pre></div>",
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diff(a, b))
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end
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def test_html_diff_with_tags
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a = ""
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b = "<div>foo</div>"
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assert_equal "<div><ins class='diffins'><div>foo</div></ins></div>", diff(a, b)
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end
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def test_diff_for_tag_change
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a = "<a>x</a>"
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b = "<b>x</b>"
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# FIXME. xhtmldiff fails to detect any change here
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assert_equal "<div><del class='diffdel'><a>x</a></del><ins class='diffins'><b>x</b></ins></div>", diff(a, b)
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end
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end
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