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require "helper"
class TestConvertXPath < Nokogiri::TestCase
def setup
super
@N = Nokogiri(File.read(HTML_FILE))
end
def assert_syntactical_equivalence(hpath, xpath, match, &blk)
blk ||= lambda {|j| j.first}
assert_equal match, blk.call(@N.search(xpath)), "xpath result did not match"
end
def test_child_tag
assert_syntactical_equivalence("h1[a]", ".//h1[child::a]", "Tender Lovemaking") do |j|
j.inner_text
end
end
def test_child_tag_equals
assert_syntactical_equivalence("h1[a='Tender Lovemaking']", ".//h1[child::a = 'Tender Lovemaking']", "Tender Lovemaking") do |j|
j.inner_text
end
end
def test_filter_contains
assert_syntactical_equivalence("title:contains('Tender')", ".//title[contains(., 'Tender')]",
"Tender Lovemaking ") do |j|
j.inner_text
end
end
def test_filter_comment
assert_syntactical_equivalence("div comment()[2]", ".//div//comment()[position() = 2]", "<!-- end of header -->") do |j|
j.first.to_s
end
end
def test_filter_text
assert_syntactical_equivalence("a[text()]", ".//a[normalize-space(child::text())]", "<a href=\"http://tenderlovemaking.com\">Tender Lovemaking</a>") do |j|
j.first.to_s
end
assert_syntactical_equivalence("a[text()='Tender Lovemaking']", ".//a[normalize-space(child::text()) = 'Tender Lovemaking']", "<a href=\"http://tenderlovemaking.com\">Tender Lovemaking</a>") do |j|
j.first.to_s
end
assert_syntactical_equivalence("a/text()", ".//a/child::text()", "Tender Lovemaking") do |j|
j.first.to_s
end
assert_syntactical_equivalence("h2//a[text()!='Back Home!']", ".//h2//a[normalize-space(child::text()) != 'Back Home!']", "Meow meow meow meow meow") do |j|
j.first.inner_text
end
end
def test_filter_by_attr
assert_syntactical_equivalence("a[@href='http://blog.geminigeek.com/wordpress-theme']",
".//a[@href = 'http://blog.geminigeek.com/wordpress-theme']",
"http://blog.geminigeek.com/wordpress-theme") do |j|
j.first["href"]
end
end
def test_css_id
assert_syntactical_equivalence("#linkcat-7", ".//*[@id = 'linkcat-7']", "linkcat-7") do |j|
j.first["id"]
end
assert_syntactical_equivalence("li#linkcat-7", ".//li[@id = 'linkcat-7']", "linkcat-7") do |j|
j.first["id"]
end
end
def test_css_class
assert_syntactical_equivalence(".cat-item-15", ".//*[contains(concat(' ',@class,' '),' cat-item-15 ')]",
"cat-item cat-item-15") do |j|
j.first["class"]
end
assert_syntactical_equivalence("li.cat-item-15", ".//li[contains(concat(' ',@class,' '),' cat-item-15 ')]",
"cat-item cat-item-15") do |j|
j.first["class"]
end
end
def test_css_tags
assert_syntactical_equivalence("div li a", ".//div//li//a", "http://brobinius.org/") do |j|
j.first.inner_text
end
assert_syntactical_equivalence("div li > a", ".//div//li/a", "http://brobinius.org/") do |j|
j.first.inner_text
end
assert_syntactical_equivalence("h1 ~ small", ".//small[preceding-sibling::h1]", "The act of making love, tenderly.") do |j|
j.first.inner_text
end
assert_syntactical_equivalence("h1 ~ small", ".//small[preceding-sibling::h1]", "The act of making love, tenderly.") do |j|
j.first.inner_text
end
end
def test_positional
assert_syntactical_equivalence("div/div:first()", ".//div/div[position() = 1]", "\r\nTender Lovemaking\r\nThe act of making love, tenderly.\r\n".gsub(/[\r\n]/, '')) do |j|
j.first.inner_text.gsub(/[\r\n]/, '')
end
assert_syntactical_equivalence("div/div:first", ".//div/div[position() = 1]", "\r\nTender Lovemaking\r\nThe act of making love, tenderly.\r\n".gsub(/[\r\n]/, '')) do |j|
j.first.inner_text.gsub(/[\r\n]/, '')
end
assert_syntactical_equivalence("div//a:last()", ".//div//a[position() = last()]", "Wordpress") do |j|
j.last.inner_text
end
assert_syntactical_equivalence("div//a:last", ".//div//a[position() = last()]", "Wordpress") do |j|
j.last.inner_text
end
end
def test_multiple_filters
assert_syntactical_equivalence("a[@rel='bookmark'][1]", ".//a[@rel = 'bookmark' and position() = 1]", "Back Home!") do |j|
j.first.inner_text
end
end
# TODO:
# doc/'title ~ link' -> links that are siblings of title
# doc/'p[@class~="final"]' -> class includes string (whitespacy)
# doc/'p[text()*="final"]' -> class includes string (index) (broken: always returns true?)
# doc/'p[text()$="final"]' -> /final$/
# doc/'p[text()|="final"]' -> /^final$/
# doc/'p[text()^="final"]' -> string starts with 'final
# nth_first
# nth_last
# even
# odd
# first-child, nth-child, last-child, nth-last-child, nth-last-of-type
# only-of-type, only-child
# parent
# empty
# root
end
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