require "helper" module Nokogiri module CSS class TestNthiness < Nokogiri::TestCase def setup super doc = <

row1

row2

row3

row4

row5

row6

row7

row8

row9

row10

row11

row12

row13

row14

bold1 italic1 bold2 emphasis1 italic2

para1

bold3

italic3 emphasis2 italic4 emphasis3 italic5 italic6 italic7

para2

para3

para4

header1

header2

header3

header4

EOF @parser = Nokogiri.HTML doc end def test_even assert_result_rows [2,4,6,8,10,12,14], @parser.search("table/tr:nth(even)") end def test_odd assert_result_rows [1,3,5,7,9,11,13], @parser.search("table/tr:nth(odd)") end def test_2n assert_equal @parser.search("table/tr:nth(even)").inner_text, @parser.search("table/tr:nth(2n)").inner_text end def test_2np1 assert_equal @parser.search("table/tr:nth(odd)").inner_text, @parser.search("table/tr:nth(2n+1)").inner_text end def test_4np3 assert_result_rows [3,7,11], @parser.search("table/tr:nth(4n+3)") end def test_3np4 assert_result_rows [4,7,10,13], @parser.search("table/tr:nth(3n+4)") end def test_mnp3 assert_result_rows [1,2,3], @parser.search("table/tr:nth(-n+3)") end def test_4nm1 assert_result_rows [3,7,11], @parser.search("table/tr:nth(4n-1)") end def test_np3 assert_result_rows [3,4,5,6,7,8,9,10,11,12,13,14], @parser.search("table/tr:nth(n+3)") end def test_first assert_result_rows [1], @parser.search("table/tr:first") assert_result_rows [1], @parser.search("table/tr:first()") end def test_last assert_result_rows [14], @parser.search("table/tr:last") assert_result_rows [14], @parser.search("table/tr:last()") end def test_first_child assert_result_rows [1], @parser.search("div/b:first-child"), "bold" assert_result_rows [1], @parser.search("table/tr:first-child") assert_result_rows [2,4], @parser.search("div/h1.c:first-child"), "header" end def test_last_child assert_result_rows [3], @parser.search("div/b:last-child"), "bold" assert_result_rows [14], @parser.search("table/tr:last-child") assert_result_rows [3,4], @parser.search("div/h1.c:last-child"), "header" end def test_nth_child assert_result_rows [2], @parser.search("div/b:nth-child(3)"), "bold" assert_result_rows [5], @parser.search("table/tr:nth-child(5)") assert_result_rows [1,3], @parser.search("div/h1.c:nth-child(2)"), "header" assert_result_rows [3,4], @parser.search("div/i.b:nth-child(2n+1)"), "italic" end def test_first_of_type assert_result_rows [1], @parser.search("table/tr:first-of-type") assert_result_rows [1], @parser.search("div/b:first-of-type"), "bold" assert_result_rows [2], @parser.search("div/b.a:first-of-type"), "bold" assert_result_rows [3], @parser.search("div/i.b:first-of-type"), "italic" end def test_last_of_type assert_result_rows [14], @parser.search("table/tr:last-of-type") assert_result_rows [3], @parser.search("div/b:last-of-type"), "bold" assert_result_rows [2,7], @parser.search("div/i:last-of-type"), "italic" assert_result_rows [2,6,7], @parser.search("div i:last-of-type"), "italic" assert_result_rows [4], @parser.search("div/i.b:last-of-type"), "italic" end def test_nth_of_type assert_result_rows [1], @parser.search("div/b:nth-of-type(1)"), "bold" assert_result_rows [2], @parser.search("div/b:nth-of-type(2)"), "bold" assert_result_rows [2], @parser.search("div/.a:nth-of-type(1)"), "bold" assert_result_rows [2,4,7], @parser.search("div i:nth-of-type(2n)"), "italic" assert_result_rows [1,3,5,6], @parser.search("div i:nth-of-type(2n+1)"), "italic" assert_result_rows [1], @parser.search("div .a:nth-of-type(2n)"), "emphasis" assert_result_rows [2,3], @parser.search("div .a:nth-of-type(2n+1)"), "bold" end def test_nth_last_of_type assert_result_rows [14], @parser.search("table/tr:nth-last-of-type(1)") assert_result_rows [12], @parser.search("table/tr:nth-last-of-type(3)") assert_result_rows [2,6,7], @parser.search("div i:nth-last-of-type(1)"), "italic" assert_result_rows [1,5], @parser.search("div i:nth-last-of-type(2)"), "italic" assert_result_rows [4], @parser.search("div/i.b:nth-last-of-type(1)"), "italic" assert_result_rows [3], @parser.search("div/i.b:nth-last-of-type(2)"), "italic" end def test_only_of_type assert_result_rows [1,4], @parser.search("div/p:only-of-type"), "para" assert_result_rows [5], @parser.search("div/i.c:only-of-type"), "italic" end def test_only_child assert_result_rows [4], @parser.search("div/p:only-child"), "para" assert_result_rows [4], @parser.search("div/h1.c:only-child"), "header" end def test_empty result = @parser.search("p:empty") assert_equal 1, result.size, "unexpected number of rows returned: '#{result.inner_text}'" assert_equal 'empty', result.first['class'] end def test_parent result = @parser.search("p:parent") assert_equal 5, result.size 0.upto(3) do |j| assert_equal "para#{j+1} ", result[j].inner_text end assert_equal "not-empty", result[4]['class'] end def test_siblings doc = <<-EOF

EOF parser = Nokogiri.HTML doc assert_equal 2, parser.search("#3 ~ p").size assert_equal "p4 p5 ", parser.search("#3 ~ p").inner_text assert_equal 0, parser.search("#5 ~ p").size assert_equal 1, parser.search("#3 + p").size assert_equal "p4 ", parser.search("#3 + p").inner_text assert_equal 0, parser.search("#5 + p").size end def assert_result_rows intarray, result, word="row" assert_equal intarray.size, result.size, "unexpected number of rows returned: '#{result.inner_text}'" assert_equal intarray.map{|j| "#{word}#{j}"}.join(' '), result.inner_text.strip, result.inner_text end end end end