require "helper" module Nokogiri module CSS class TestCssIntegration < Nokogiri::TestCase def setup super doc = <<~EOF
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 @nested = Nokogiri.HTML(<<~EOF)
bold

para

bold ... ...

para

bold

para

bold ... ...

para

bold

para

EOF 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_n assert_result_rows((1..14).to_a, @parser.search("table//tr:nth(n)")) 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

p1

p2

p3

p4

p5

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 test_has_a result = @nested.css("div:has(b)") expected = [ @nested.at_css(".unnested.direct"), @nested.at_css(".unnested.indirect"), @nested.at_css(".nested-parent"), @nested.at_css(".nested-child.direct"), @nested.at_css(".nested-child.indirect"), @nested.at_css(".has-bold"), ] assert_equal expected, result.to_a end def test_has_a_gt_b result = @nested.css("body *:has(div > b)") expected = [ @nested.at_css(".nested-parent"), ] assert_equal expected, result.to_a end def test_has_gt_b result = @nested.css("body *:has(> b)") expected = [ @nested.at_css(".unnested.direct"), @nested.at_css(".unnested.indirect"), @nested.at_css(".nested-child.direct"), @nested.at_css(".nested-child.indirect"), @nested.at_css(".has-bold"), ] assert_equal expected, result.to_a end def test_has_a_plus_b result = @nested.css("div:has(b + p)") expected = [ @nested.at_css(".unnested.direct"), @nested.at_css(".nested-parent"), @nested.at_css(".nested-child.direct"), ] assert_equal expected, result.to_a end def test_has_plus_b result = @nested.css("b:has(+ p)") expected = [ @nested.at_css(".unnested.direct b"), @nested.at_css(".nested-child.direct b"), ] assert_equal expected, result.to_a end def test_has_a_tilde_b result = @nested.css("div:has(b ~ p)") expected = [ @nested.at_css(".unnested.direct"), @nested.at_css(".unnested.indirect"), @nested.at_css(".nested-parent"), @nested.at_css(".nested-child.direct"), @nested.at_css(".nested-child.indirect"), ] assert_equal expected, result.to_a end def test_has_tilde_b result = @nested.css("b:has(~ p)") expected = [ @nested.at_css(".unnested.direct b"), @nested.at_css(".unnested.indirect b"), @nested.at_css(".nested-child.direct b"), @nested.at_css(".nested-child.indirect b"), ].flatten assert_equal expected, result.to_a end def test_class_attr_selector doc = Nokogiri::HTML::Document.parse(<<~EOF)
space-delimited
tab-delimited
newline-delimited
carriage-return-delimited
EOF result = doc.css("div[class~='asdf']") assert_equal 4, result.length expected = doc.css("div") assert_equal expected, result end private 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