/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at
https://mozilla.org/MPL/2.0/. */
use cssparser::SourceLocation;
use euclid::Scale;
use euclid::Size2D;
use selectors::parser::{AncestorHashes, Selector};
use servo_arc::Arc;
use servo_atoms::Atom;
use style::context::QuirksMode;
use style::media_queries::{Device, MediaType};
use style::properties::{longhands, Importance};
use style::properties::{PropertyDeclaration, PropertyDeclarationBlock};
use style::selector_map::SelectorMap;
use style::selector_parser::{SelectorImpl, SelectorParser};
use style::shared_lock::SharedRwLock;
use style::stylesheets::StyleRule;
use style::stylist::needs_revalidation_for_testing;
use style::stylist::{Rule, Stylist};
use style::thread_state::{self, ThreadState};
/// Helper method to get some Rules from selector strings.
/// Each sublist of the result contains the Rules for one StyleRule.
fn get_mock_rules(css_selectors: &[&str]) -> (Vec<Vec<Rule>>, SharedRwLock) {
let shared_lock = SharedRwLock::new();
(
css_selectors
.iter()
.enumerate()
.map(|(i, selectors)| {
let selectors =
SelectorParser::parse_author_origin_no_namespace(selectors).unwrap();
let locked = Arc::new(shared_lock.wrap(StyleRule {
selectors: selectors,
block: Arc::new(shared_lock.wrap(PropertyDeclarationBlock::with_one(
PropertyDeclaration::Display(longhands::display::SpecifiedValue::Block),
Importance::Normal,
))),
source_location: SourceLocation { line: 0, column: 0 },
}));
let guard = shared_lock.read();
let rule = locked.read_with(&guard);
rule.selectors
.0
.iter()
.map(|s| {
Rule::new(
s.clone(),
AncestorHashes::new(s, QuirksMode::NoQuirks),
locked.clone(),
i as u32,
)
})
.collect()
})
.collect(),
shared_lock,
)
}
fn parse_selectors(selectors: &[&str]) -> Vec<Selector<SelectorImpl>> {
selectors
.iter()
.map(|x| {
SelectorParser::parse_author_origin_no_namespace(x)
.unwrap()
.0
.into_iter()
.nth(0)
.unwrap()
})
.collect()
}
#[test]
fn test_revalidation_selectors() {
let test = parse_selectors(&[
// Not revalidation selectors.
"div",
"div:not(.foo)",
"div span",
"div > span",
// ID selectors.
"#foo1",
"#foo2::before",
"#foo3 > span",
"#foo1 > span", // FIXME(bz): This one should not be a
// revalidation selector, since #foo1 should be in the
// rule hash.
// Attribute selectors.
"div[foo]",
"div:not([foo])",
"div[foo = \"bar\"]",
"div[foo ~= \"bar\"]",
"div[foo |= \"bar\"]",
"div[foo ^= \"bar\"]",
"div[foo $= \"bar\"]",
"div[foo *= \"bar\"]",
"*|div[foo][bar = \"baz\"]",
// Non-state-based pseudo-classes.
"div:empty",
"div:first-child",
"div:last-child",
"div:only-child",
"div:nth-child(2)",
"div:nth-last-child(2)",
"div:nth-of-type(2)",
"div:nth-last-of-type(2)",
"div:first-of-type",
"div:last-of-type",
"div:only-of-type",
// Note: it would be nice to test :moz-any and the various other non-TS
// pseudo classes supported by gecko, but we don't have access to those
// in these unit tests. :-(
// Sibling combinators.
"span + div",
"span ~ div",
// Selectors in the ancestor chain (needed for cousin sharing).
"p:first-child span",
])
.into_iter()
.filter(|s| needs_revalidation_for_testing(&s))
.collect::<Vec<_>>();
let reference = parse_selectors(&[
// ID selectors.
"#foo3 > span",
"#foo1 > span",
// Attribute selectors.
"div[foo]",
"div:not([foo])",
"div[foo = \"bar\"]",
"div[foo ~= \"bar\"]",
"div[foo |= \"bar\"]",
"div[foo ^= \"bar\"]",
"div[foo $= \"bar\"]",
"div[foo *= \"bar\"]",
"*|div[foo][bar = \"baz\"]",
// Non-state-based pseudo-classes.
"div:empty",
"div:first-child",
"div:last-child",
"div:only-child",
"div:nth-child(2)",
"div:nth-last-child(2)",
"div:nth-of-type(2)",
"div:nth-last-of-type(2)",
"div:first-of-type",
"div:last-of-type",
"div:only-of-type",
// Sibling combinators.
"span + div",
"span ~ div",
// Selectors in the ancestor chain (needed for cousin sharing).
"p:first-child span",
])
.into_iter()
.collect::<Vec<_>>();
assert_eq!(test.len(), reference.len());
for (t, r) in test.into_iter().zip(reference.into_iter()) {
assert_eq!(t, r)
}
}
#[test]
fn test_rule_ordering_same_specificity() {
let (rules_list, _) = get_mock_rules(&["a.intro", "img.sidebar"]);
let a = &rules_list[0][0];
let b = &rules_list[1][0];
assert!(
(a.specificity(), a.source_order) < ((b.specificity(), b.source_order)),
"The rule that comes later should win."
);
}
#[test]
fn test_insert() {
let (rules_list, _) = get_mock_rules(&[".intro.foo", "#top"]);
let mut selector_map = SelectorMap::new();
selector_map
.insert(rules_list[1][0].clone(), QuirksMode::NoQuirks)
.expect("OOM");
assert_eq!(
1,
selector_map
.id_hash
.get(&Atom::from("top"), QuirksMode::NoQuirks)
.unwrap()[0]
.source_order
);
selector_map
.insert(rules_list[0][0].clone(), QuirksMode::NoQuirks)
.expect("OOM");
assert_eq!(
0,
selector_map
.class_hash
.get(&Atom::from("foo"), QuirksMode::NoQuirks)
.unwrap()[0]
.source_order
);
assert!(selector_map
.class_hash
.get(&Atom::from("intro"), QuirksMode::NoQuirks)
.is_none());
}
fn mock_stylist() -> Stylist {
let device = Device::new(
MediaType::screen(),
Size2D::new(0f32, 0f32),
Scale::new(1.0),
);
Stylist::new(device, QuirksMode::NoQuirks)
}
#[test]
fn test_stylist_device_accessors() {
thread_state::initialize(ThreadState::LAYOUT);
let stylist = mock_stylist();
assert_eq!(stylist.device().media_type(), MediaType::screen());
let mut stylist_mut = mock_stylist();
assert_eq!(stylist_mut.device_mut().media_type(), MediaType::screen());
}
#[test]
fn test_stylist_rule_tree_accessors() {
thread_state::initialize(ThreadState::LAYOUT);
let stylist = mock_stylist();
stylist.rule_tree();
stylist.rule_tree().root();
}
