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# frozen_string_literal: true
require "helper"
describe Nokogiri::CSS::SelectorCache do
before do
Nokogiri::CSS::SelectorCache.clear_cache
Nokogiri::CSS::SelectorCache.class_eval do
class << @cache
alias_method :old_bracket, :[]
def access_count
@access_count ||= 0
end
def [](key)
@access_count ||= 0
@access_count += 1
old_bracket(key)
end
end
end
end
after do
Nokogiri::CSS::SelectorCache.clear_cache(true)
end
let(:selector_list) { "a1 > b2 > c3" }
it "uses the cache by default" do
Nokogiri::CSS.xpath_for(selector_list)
Nokogiri::CSS.xpath_for(selector_list)
assert_equal(1, Nokogiri::CSS::SelectorCache.class_eval { @cache.count })
assert_equal(2, Nokogiri::CSS::SelectorCache.class_eval { @cache.access_count })
end
it "uses the cache when explicitly requested" do
Nokogiri::CSS.xpath_for(selector_list, cache: true)
Nokogiri::CSS.xpath_for(selector_list, cache: true)
assert_equal(1, Nokogiri::CSS::SelectorCache.class_eval { @cache.count })
assert_equal(2, Nokogiri::CSS::SelectorCache.class_eval { @cache.access_count })
end
it "does not use the cache when explicitly requested" do
Nokogiri::CSS.xpath_for(selector_list, cache: false)
Nokogiri::CSS.xpath_for(selector_list, cache: false)
assert_equal(0, Nokogiri::CSS::SelectorCache.class_eval { @cache.count })
assert_equal(0, Nokogiri::CSS::SelectorCache.class_eval { @cache.access_count })
end
it "uses the cached expressions" do
Nokogiri::CSS::SelectorCache.clear_cache
cache = Nokogiri::CSS::SelectorCache.instance_variable_get(:@cache)
assert_empty(cache)
Nokogiri::CSS.xpath_for(selector_list)
refute_empty(cache)
key = cache.keys.first
cache[key] = ["this is an injected value"]
assert_equal(["this is an injected value"], Nokogiri::CSS.xpath_for(selector_list))
end
it "test_cache_key_on_ns_prefix_and_visitor_config" do
Nokogiri::CSS::SelectorCache.clear_cache
cache = Nokogiri::CSS::SelectorCache.instance_variable_get(:@cache)
assert_empty(cache)
Nokogiri::CSS.xpath_for(selector_list)
Nokogiri::CSS.xpath_for(selector_list, prefix: ".//")
Nokogiri::CSS.xpath_for(selector_list, prefix: ".//", ns: { "example" => "http://example.com/" })
Nokogiri::CSS.xpath_for(
selector_list,
visitor: Nokogiri::CSS::XPathVisitor.new(
builtins: Nokogiri::CSS::XPathVisitor::BuiltinsConfig::ALWAYS,
prefix: ".//",
namespaces: { "example" => "http://example.com/" },
),
)
Nokogiri::CSS.xpath_for(
selector_list,
visitor: Nokogiri::CSS::XPathVisitor.new(
builtins: Nokogiri::CSS::XPathVisitor::BuiltinsConfig::ALWAYS,
doctype: Nokogiri::CSS::XPathVisitor::DoctypeConfig::HTML5,
prefix: ".//",
namespaces: { "example" => "http://example.com/" },
),
)
assert_equal(5, cache.length)
end
end
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