Fixed 'on' bug, to_css bug; added tests

tests/unit/style/parsing/font.rs

@@ -0,0 +1,43 @@
+/* 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/. */
+
+use cssparser::Parser;
+use media_queries::CSSErrorReporterTest;
+use style::parser::ParserContext;
+use style::stylesheets::Origin;
+use url::Url;
+
+#[test]
+fn font_feature_settings_should_parse_properly() {
+    use style::properties::longhands::font_feature_settings;
+    use style::properties::longhands::font_feature_settings::computed_value;
+    use style::properties::longhands::font_feature_settings::computed_value::FeatureTagValue;
+
+    let normal = parse_longhand!(font_feature_settings, "normal");
+    let normal_computed = computed_value::T::Normal;
+    assert_eq!(normal, normal_computed);
+
+    let on = parse_longhand!(font_feature_settings, "\"abcd\" on");
+    let on_computed = computed_value::T::Computed(vec![FeatureTagValue{ tag:String::from("abcd"), value: 1 }]);
+    assert_eq!(on, on_computed);
+
+    let off = parse_longhand!(font_feature_settings, "\"abcd\" off");
+    let off_computed = computed_value::T::Computed(vec![FeatureTagValue{ tag:String::from("abcd"), value: 0 }]);
+    assert_eq!(off, off_computed);
+
+    let empty = parse_longhand!(font_feature_settings, "\"abcd\"");
+    let empty_computed = computed_value::T::Computed(vec![FeatureTagValue{ tag:String::from("abcd"), value: 1 }]);
+    assert_eq!(empty, empty_computed);
+
+    let pos_integer = parse_longhand!(font_feature_settings, "\"abcd\" 100");
+    let pos_integer_computed = computed_value::T::Computed(vec![FeatureTagValue{ tag:String::from("abcd"), value: 100 }]);
+    assert_eq!(pos_integer, pos_integer_computed);
+
+    let pos_integer = parse_longhand!(font_feature_settings, "\"abcd\" off, \"efgh\"");
+    let pos_integer_computed = computed_value::T::Computed(vec![
+        FeatureTagValue{ tag:String::from("abcd"), value: 0 },
+        FeatureTagValue{ tag:String::from("efgh"), value: 1 }
+    ]);
+    assert_eq!(pos_integer, pos_integer_computed);
+}

tests/unit/style/parsing/mod.rs

@@ -62,6 +62,7 @@ macro_rules! parse_longhand {
 }
 
 mod basic_shape;
+mod font;
 mod image;
 mod mask;
 mod position;