# frozen_string_literal: true require "helper" class TestNokogiriCssIntegration < Nokogiri::TestCase describe "CSS integration tests" do let(:subject) do subject_class.parse(<<~HTML)
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

HTML end let(:nested) do subject_class.parse(<<~HTML)
bold

para

bold ... ...

para

bold

para

bold ... ...

para

bold

para

HTML 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 doctypes = [Nokogiri::XML::Document, Nokogiri::HTML4::Document] doctypes << Nokogiri::HTML5::Document if defined?(Nokogiri::HTML5::Document) doctypes.each do |doctype| describe doctype do let(:subject_class) { doctype } it "selects even" do assert_result_rows([2, 4, 6, 8, 10, 12, 14], subject.search("table//tr:nth(even)")) end it "selects odd" do assert_result_rows([1, 3, 5, 7, 9, 11, 13], subject.search("table//tr:nth(odd)")) end it "selects n" do assert_result_rows((1..14).to_a, subject.search("table//tr:nth(n)")) end it "selects 2n" do assert_equal(subject.search("table//tr:nth(even)").inner_text, subject.search("table//tr:nth(2n)").inner_text) end it "selects 2np1" do assert_equal(subject.search("table//tr:nth(odd)").inner_text, subject.search("table//tr:nth(2n+1)").inner_text) end it "selects 4np3" do assert_result_rows([3, 7, 11], subject.search("table//tr:nth(4n+3)")) end it "selects 3np4" do assert_result_rows([4, 7, 10, 13], subject.search("table//tr:nth(3n+4)")) end it "selects mnp3" do assert_result_rows([1, 2, 3], subject.search("table//tr:nth(-n+3)")) end it "selects 4nm1" do assert_result_rows([3, 7, 11], subject.search("table//tr:nth(4n-1)")) end it "selects np3" do assert_result_rows([3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14], subject.search("table//tr:nth(n+3)")) end it "selects first" do assert_result_rows([1], subject.search("table//tr:first")) assert_result_rows([1], subject.search("table//tr:first()")) end it "selects last" do assert_result_rows([14], subject.search("table//tr:last")) assert_result_rows([14], subject.search("table//tr:last()")) end it "selects first_child" do assert_result_rows([1], subject.search("div/b:first-child"), "bold") assert_result_rows([1], subject.search("table//tr:first-child")) assert_result_rows([2, 4], subject.search("div/h1.c:first-child"), "header") end it "selects last_child" do assert_result_rows([3], subject.search("div/b:last-child"), "bold") assert_result_rows([14], subject.search("table//tr:last-child")) assert_result_rows([3, 4], subject.search("div/h1.c:last-child"), "header") end it "selects nth_child" do assert_result_rows([2], subject.search("div/b:nth-child(3)"), "bold") assert_result_rows([5], subject.search("table//tr:nth-child(5)")) assert_result_rows([1, 3], subject.search("div/h1.c:nth-child(2)"), "header") assert_result_rows([3, 4], subject.search("div/i.b:nth-child(2n+1)"), "italic") end it "selects first_of_type" do assert_result_rows([1], subject.search("table//tr:first-of-type")) assert_result_rows([1], subject.search("div/b:first-of-type"), "bold") assert_result_rows([2], subject.search("div/b.a:first-of-type"), "bold") assert_result_rows([3], subject.search("div/i.b:first-of-type"), "italic") end it "selects last_of_type" do assert_result_rows([14], subject.search("table//tr:last-of-type")) assert_result_rows([3], subject.search("div/b:last-of-type"), "bold") assert_result_rows([2, 7], subject.search("div/i:last-of-type"), "italic") assert_result_rows([2, 6, 7], subject.search("div i:last-of-type"), "italic") assert_result_rows([4], subject.search("div/i.b:last-of-type"), "italic") end it "selects nth_of_type" do assert_result_rows([1], subject.search("div/b:nth-of-type(1)"), "bold") assert_result_rows([2], subject.search("div/b:nth-of-type(2)"), "bold") assert_result_rows([2], subject.search("div/.a:nth-of-type(1)"), "bold") assert_result_rows([2, 4, 7], subject.search("div i:nth-of-type(2n)"), "italic") assert_result_rows([1, 3, 5, 6], subject.search("div i:nth-of-type(2n+1)"), "italic") assert_result_rows([1], subject.search("div .a:nth-of-type(2n)"), "emphasis") assert_result_rows([2, 3], subject.search("div .a:nth-of-type(2n+1)"), "bold") end it "selects nth_last_of_type" do assert_result_rows([14], subject.search("table//tr:nth-last-of-type(1)")) assert_result_rows([12], subject.search("table//tr:nth-last-of-type(3)")) assert_result_rows([2, 6, 7], subject.search("div i:nth-last-of-type(1)"), "italic") assert_result_rows([1, 5], subject.search("div i:nth-last-of-type(2)"), "italic") assert_result_rows([4], subject.search("div/i.b:nth-last-of-type(1)"), "italic") assert_result_rows([3], subject.search("div/i.b:nth-last-of-type(2)"), "italic") end it "selects only_of_type" do assert_result_rows([1, 4], subject.search("div/p:only-of-type"), "para") assert_result_rows([5], subject.search("div/i.c:only-of-type"), "italic") end it "selects only_child" do assert_result_rows([4], subject.search("div/p:only-child"), "para") assert_result_rows([4], subject.search("div/h1.c:only-child"), "header") end it "selects empty" do result = subject.search("p:empty") assert_equal(1, result.size, "unexpected number of rows returned: '#{result.inner_text}'") assert_equal("empty", result.first["class"]) end it "selects parent" do result = subject.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 it "selects siblings" do html = <<~HTML

p1

p2

p3

p4

p5

HTML doc = subject_class.parse(html) assert_equal(2, doc.search("#3 ~ p").size) assert_equal("p4 p5 ", doc.search("#3 ~ p").inner_text) assert_equal(0, doc.search("#5 ~ p").size) assert_equal(1, doc.search("#3 + p").size) assert_equal("p4 ", doc.search("#3 + p").inner_text) assert_equal(0, doc.search("#5 + p").size) end it "selects has_a" do 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 it "selects has_a_gt_b" do result = nested.css("body *:has(div > b)") expected = [ nested.at_css(".nested-parent"), ] assert_equal(expected, result.to_a) end it "selects has_gt_b" do 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 it "selects has_a_plus_b" do 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 it "selects has_plus_b" do 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 it "selects has_a_tilde_b" do 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 it "selects has_tilde_b" do 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 it "selects class_attr_selector" do doc = subject_class.parse(<<~HTML)
space-delimited
tab-delimited
newline-delimited
carriage-return-delimited
HTML result = doc.css("div[class~='asdf']") assert_equal(4, result.length) result = doc.css("div[@class~='asdf']") assert_equal(4, result.length) expected = doc.css("div") assert_equal(expected, result) end it "handles xpath attribute selectors" do doc = subject_class.parse(<<~HTML)
HTML result = doc.css("div > @class") assert_equal(["first", "second", "third", "fourth"], result.map(&:to_s)) result = doc.css("div/@class") assert_equal(["first", "second", "third", "fourth"], result.map(&:to_s)) result = doc.css("div @class") assert_equal(["first", "child", "second", "third", "fourth"], result.map(&:to_s)) end it "handles xpath functions" do doc = subject_class.parse(<<~HTML)
firstchild
second
third
fourth
HTML result = doc.css("div > text()") assert_equal(["first", "second", "third", "fourth"], result.map(&:to_s)) result = doc.css("div/text()") assert_equal(["first", "second", "third", "fourth"], result.map(&:to_s)) result = doc.css("div text()") assert_equal(["first", "child", "second", "third", "fourth"], result.map(&:to_s)) end end end end end