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-rw-r--r--servo/tests/unit/style/media_queries.rs398
1 files changed, 398 insertions, 0 deletions
diff --git a/servo/tests/unit/style/media_queries.rs b/servo/tests/unit/style/media_queries.rs
new file mode 100644
index 0000000000..eaa91e6ec4
--- /dev/null
+++ b/servo/tests/unit/style/media_queries.rs
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+/* 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 euclid::Scale;
+use euclid::Size2D;
+use servo_arc::Arc;
+use servo_url::ServoUrl;
+use std::borrow::ToOwned;
+use style::Atom;
+use style::context::QuirksMode;
+use style::media_queries::*;
+use style::servo::media_queries::*;
+use style::shared_lock::SharedRwLock;
+use style::stylesheets::{AllRules, Stylesheet, StylesheetInDocument, Origin, CssRule};
+use style::values::{CustomIdent, specified};
+use style_traits::ToCss;
+
+fn test_media_rule<F>(css: &str, callback: F)
+where
+ F: Fn(&MediaList, &str),
+{
+ let url = ServoUrl::parse("http://localhost").unwrap();
+ let css_str = css.to_owned();
+ let lock = SharedRwLock::new();
+ let media_list = Arc::new(lock.wrap(MediaList::empty()));
+ let stylesheet = Stylesheet::from_str(
+ css, url, Origin::Author, media_list, lock,
+ None, None, QuirksMode::NoQuirks, 0);
+ let dummy = Device::new(MediaType::screen(), Size2D::new(200.0, 100.0), Scale::new(1.0));
+ let mut rule_count = 0;
+ let guard = stylesheet.shared_lock.read();
+ for rule in stylesheet.iter_rules::<AllRules>(&dummy, &guard) {
+ if let CssRule::Media(ref lock) = *rule {
+ rule_count += 1;
+ callback(&lock.read_with(&guard).media_queries.read_with(&guard), css);
+ }
+ }
+ assert!(rule_count > 0, css_str);
+}
+
+fn media_query_test(device: &Device, css: &str, expected_rule_count: usize) {
+ let url = ServoUrl::parse("http://localhost").unwrap();
+ let lock = SharedRwLock::new();
+ let media_list = Arc::new(lock.wrap(MediaList::empty()));
+ let ss = Stylesheet::from_str(
+ css, url, Origin::Author, media_list, lock,
+ None, None, QuirksMode::NoQuirks, 0);
+ let mut rule_count = 0;
+ ss.effective_style_rules(device, &ss.shared_lock.read(), |_| rule_count += 1);
+ assert!(rule_count == expected_rule_count, css.to_owned());
+}
+
+#[test]
+fn test_mq_empty() {
+ test_media_rule("@media { }", |list, css| {
+ assert!(list.media_queries.len() == 0, css.to_owned());
+ });
+}
+
+#[test]
+fn test_mq_screen() {
+ test_media_rule("@media screen { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::screen()), css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+
+ test_media_rule("@media only screen { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == Some(Qualifier::Only), css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::screen()), css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+
+ test_media_rule("@media not screen { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == Some(Qualifier::Not), css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::screen()), css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+}
+
+#[test]
+fn test_mq_print() {
+ test_media_rule("@media print { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::print()), css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+
+ test_media_rule("@media only print { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == Some(Qualifier::Only), css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::print()), css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+
+ test_media_rule("@media not print { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == Some(Qualifier::Not), css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::print()), css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+}
+
+#[test]
+fn test_mq_unknown() {
+ test_media_rule("@media fridge { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(
+ MediaType(CustomIdent(Atom::from("fridge")))), css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+
+ test_media_rule("@media only glass { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == Some(Qualifier::Only), css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(
+ MediaType(CustomIdent(Atom::from("glass")))), css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+
+ test_media_rule("@media not wood { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == Some(Qualifier::Not), css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(
+ MediaType(CustomIdent(Atom::from("wood")))), css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+}
+
+#[test]
+fn test_mq_all() {
+ test_media_rule("@media all { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::All, css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+
+ test_media_rule("@media only all { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == Some(Qualifier::Only), css.to_owned());
+ assert!(q.media_type == MediaQueryType::All, css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+
+ test_media_rule("@media not all { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == Some(Qualifier::Not), css.to_owned());
+ assert!(q.media_type == MediaQueryType::All, css.to_owned());
+ assert!(q.expressions.len() == 0, css.to_owned());
+ });
+}
+
+#[test]
+fn test_mq_or() {
+ test_media_rule("@media screen, print { }", |list, css| {
+ assert!(list.media_queries.len() == 2, css.to_owned());
+ let q0 = &list.media_queries[0];
+ assert!(q0.qualifier == None, css.to_owned());
+ assert!(q0.media_type == MediaQueryType::Concrete(MediaType::screen()), css.to_owned());
+ assert!(q0.expressions.len() == 0, css.to_owned());
+
+ let q1 = &list.media_queries[1];
+ assert!(q1.qualifier == None, css.to_owned());
+ assert!(q1.media_type == MediaQueryType::Concrete(MediaType::print()), css.to_owned());
+ assert!(q1.expressions.len() == 0, css.to_owned());
+ });
+}
+
+#[test]
+fn test_mq_default_expressions() {
+ test_media_rule("@media (min-width: 100px) { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::All, css.to_owned());
+ assert!(q.expressions.len() == 1, css.to_owned());
+ match *q.expressions[0].kind_for_testing() {
+ ExpressionKind::Width(Range::Min(ref w)) => assert!(*w == specified::Length::from_px(100.)),
+ _ => panic!("wrong expression type"),
+ }
+ });
+
+ test_media_rule("@media (max-width: 43px) { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::All, css.to_owned());
+ assert!(q.expressions.len() == 1, css.to_owned());
+ match *q.expressions[0].kind_for_testing() {
+ ExpressionKind::Width(Range::Max(ref w)) => assert!(*w == specified::Length::from_px(43.)),
+ _ => panic!("wrong expression type"),
+ }
+ });
+}
+
+#[test]
+fn test_mq_expressions() {
+ test_media_rule("@media screen and (min-width: 100px) { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::screen()), css.to_owned());
+ assert!(q.expressions.len() == 1, css.to_owned());
+ match *q.expressions[0].kind_for_testing() {
+ ExpressionKind::Width(Range::Min(ref w)) => assert!(*w == specified::Length::from_px(100.)),
+ _ => panic!("wrong expression type"),
+ }
+ });
+
+ test_media_rule("@media print and (max-width: 43px) { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::print()), css.to_owned());
+ assert!(q.expressions.len() == 1, css.to_owned());
+ match *q.expressions[0].kind_for_testing() {
+ ExpressionKind::Width(Range::Max(ref w)) => assert!(*w == specified::Length::from_px(43.)),
+ _ => panic!("wrong expression type"),
+ }
+ });
+
+ test_media_rule("@media print and (width: 43px) { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::print()), css.to_owned());
+ assert!(q.expressions.len() == 1, css.to_owned());
+ match *q.expressions[0].kind_for_testing() {
+ ExpressionKind::Width(Range::Eq(ref w)) => assert!(*w == specified::Length::from_px(43.)),
+ _ => panic!("wrong expression type"),
+ }
+ });
+
+ test_media_rule("@media fridge and (max-width: 52px) { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(
+ MediaType(CustomIdent(Atom::from("fridge")))), css.to_owned());
+ assert!(q.expressions.len() == 1, css.to_owned());
+ match *q.expressions[0].kind_for_testing() {
+ ExpressionKind::Width(Range::Max(ref w)) => assert!(*w == specified::Length::from_px(52.)),
+ _ => panic!("wrong expression type"),
+ }
+ });
+}
+
+#[test]
+fn test_to_css() {
+ test_media_rule("@media print and (width: 43px) { }", |list, _| {
+ let q = &list.media_queries[0];
+ let dest = q.to_css_string();
+ assert_eq!(dest, "print and (width: 43px)");
+ });
+}
+
+#[test]
+fn test_mq_multiple_expressions() {
+ test_media_rule("@media (min-width: 100px) and (max-width: 200px) { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == None, css.to_owned());
+ assert!(q.media_type == MediaQueryType::All, css.to_owned());
+ assert!(q.expressions.len() == 2, css.to_owned());
+ match *q.expressions[0].kind_for_testing() {
+ ExpressionKind::Width(Range::Min(ref w)) => assert!(*w == specified::Length::from_px(100.)),
+ _ => panic!("wrong expression type"),
+ }
+ match *q.expressions[1].kind_for_testing() {
+ ExpressionKind::Width(Range::Max(ref w)) => assert!(*w == specified::Length::from_px(200.)),
+ _ => panic!("wrong expression type"),
+ }
+ });
+
+ test_media_rule("@media not screen and (min-width: 100px) and (max-width: 200px) { }", |list, css| {
+ assert!(list.media_queries.len() == 1, css.to_owned());
+ let q = &list.media_queries[0];
+ assert!(q.qualifier == Some(Qualifier::Not), css.to_owned());
+ assert!(q.media_type == MediaQueryType::Concrete(MediaType::screen()), css.to_owned());
+ assert!(q.expressions.len() == 2, css.to_owned());
+ match *q.expressions[0].kind_for_testing() {
+ ExpressionKind::Width(Range::Min(ref w)) => assert!(*w == specified::Length::from_px(100.)),
+ _ => panic!("wrong expression type"),
+ }
+ match *q.expressions[1].kind_for_testing() {
+ ExpressionKind::Width(Range::Max(ref w)) => assert!(*w == specified::Length::from_px(200.)),
+ _ => panic!("wrong expression type"),
+ }
+ });
+}
+
+#[test]
+fn test_mq_malformed_expressions() {
+ fn check_malformed_expr(list: &MediaList, css: &str) {
+ assert!(!list.media_queries.is_empty(), css.to_owned());
+ for mq in &list.media_queries {
+ assert!(mq.qualifier == Some(Qualifier::Not), css.to_owned());
+ assert!(mq.media_type == MediaQueryType::All, css.to_owned());
+ assert!(mq.expressions.is_empty(), css.to_owned());
+ }
+ }
+
+ for rule in &[
+ "@media (min-width: 100blah) and (max-width: 200px) { }",
+ "@media screen and (height: 200px) { }",
+ "@media (min-width: 30em foo bar) {}",
+ "@media not {}",
+ "@media not (min-width: 300px) {}",
+ "@media , {}",
+ ] {
+ test_media_rule(rule, check_malformed_expr);
+ }
+}
+
+#[test]
+fn test_matching_simple() {
+ let device = Device::new(MediaType::screen(), Size2D::new(200.0, 100.0), Scale::new(1.0));
+
+ media_query_test(&device, "@media not all { a { color: red; } }", 0);
+ media_query_test(&device, "@media not screen { a { color: red; } }", 0);
+ media_query_test(&device, "@media not print { a { color: red; } }", 1);
+
+ media_query_test(&device, "@media unknown { a { color: red; } }", 0);
+ media_query_test(&device, "@media not unknown { a { color: red; } }", 1);
+
+ media_query_test(&device, "@media { a { color: red; } }", 1);
+ media_query_test(&device, "@media screen { a { color: red; } }", 1);
+ media_query_test(&device, "@media print { a { color: red; } }", 0);
+}
+
+#[test]
+fn test_matching_width() {
+ let device = Device::new(MediaType::screen(), Size2D::new(200.0, 100.0), Scale::new(1.0));
+
+ media_query_test(&device, "@media { a { color: red; } }", 1);
+
+ media_query_test(&device, "@media (min-width: 50px) { a { color: red; } }", 1);
+ media_query_test(&device, "@media (min-width: 150px) { a { color: red; } }", 1);
+ media_query_test(&device, "@media (min-width: 300px) { a { color: red; } }", 0);
+
+ media_query_test(&device, "@media screen and (min-width: 50px) { a { color: red; } }", 1);
+ media_query_test(&device, "@media screen and (min-width: 150px) { a { color: red; } }", 1);
+ media_query_test(&device, "@media screen and (min-width: 300px) { a { color: red; } }", 0);
+
+ media_query_test(&device, "@media not screen and (min-width: 50px) { a { color: red; } }", 0);
+ media_query_test(&device, "@media not screen and (min-width: 150px) { a { color: red; } }", 0);
+ media_query_test(&device, "@media not screen and (min-width: 300px) { a { color: red; } }", 1);
+
+ media_query_test(&device, "@media (max-width: 50px) { a { color: red; } }", 0);
+ media_query_test(&device, "@media (max-width: 150px) { a { color: red; } }", 0);
+ media_query_test(&device, "@media (max-width: 300px) { a { color: red; } }", 1);
+
+ media_query_test(&device, "@media screen and (min-width: 50px) and (max-width: 100px) { a { color: red; } }", 0);
+ media_query_test(&device, "@media screen and (min-width: 250px) and (max-width: 300px) { a { color: red; } }", 0);
+ media_query_test(&device, "@media screen and (min-width: 50px) and (max-width: 250px) { a { color: red; } }", 1);
+
+ media_query_test(
+ &device, "@media not screen and (min-width: 50px) and (max-width: 100px) { a { color: red; } }", 1);
+ media_query_test(
+ &device, "@media not screen and (min-width: 250px) and (max-width: 300px) { a { color: red; } }", 1);
+ media_query_test(
+ &device, "@media not screen and (min-width: 50px) and (max-width: 250px) { a { color: red; } }", 0);
+
+ media_query_test(
+ &device, "@media not screen and (min-width: 3.1em) and (max-width: 6em) { a { color: red; } }", 1);
+ media_query_test(
+ &device, "@media not screen and (min-width: 16em) and (max-width: 19.75em) { a { color: red; } }", 1);
+ media_query_test(
+ &device, "@media not screen and (min-width: 3em) and (max-width: 250px) { a { color: red; } }", 0);
+}
+
+#[test]
+fn test_matching_invalid() {
+ let device = Device::new(MediaType::screen(), Size2D::new(200.0, 100.0), Scale::new(1.0));
+
+ media_query_test(&device, "@media fridge { a { color: red; } }", 0);
+ media_query_test(&device, "@media screen and (height: 100px) { a { color: red; } }", 0);
+ media_query_test(&device, "@media not print and (width: 100) { a { color: red; } }", 0);
+}
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