Make unit tests pass on TravisCI.

tests/unit/style/lib.rs

@@ -27,6 +27,7 @@ mod logical_geometry;
 mod media_queries;
 mod parsing;
 mod properties;
+mod restyle_hints;
 mod rule_tree;
 mod size_of;
 mod str;

tests/unit/style/restyle_hints.rs

@@ -0,0 +1,31 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+#[test]
+fn smoke_restyle_hints() {
+    use cssparser::Parser;
+    use selectors::parser::SelectorList;
+    use style::restyle_hints::{DependencySet, RESTYLE_LATER_SIBLINGS};
+    use style::selector_parser::SelectorParser;
+    use style::stylesheets::{Origin, Namespaces};
+    let namespaces = Namespaces::default();
+    let parser = SelectorParser {
+        stylesheet_origin: Origin::Author,
+        namespaces: &namespaces,
+    };
+
+    let mut dependencies = DependencySet::new();
+
+    let mut p = Parser::new(":not(:active) ~ label");
+    let selectors = SelectorList::parse(&parser, &mut p).unwrap();
+    assert_eq!((selectors.0).len(), 1);
+
+    let selector = (selectors.0).first().unwrap();
+    dependencies.note_selector(selector);
+    assert_eq!(dependencies.len(), 1);
+    let state_deps = dependencies.get_state_deps();
+    assert_eq!(state_deps.len(), 1);
+    assert!(!state_deps[0].sensitivities.states.is_empty());
+    assert!(state_deps[0].hint.contains(RESTYLE_LATER_SIBLINGS));
+}