1 files changed, 70 insertions, 0 deletions
diff --git a/servo/tests/unit/style/properties/mod.rs b/servo/tests/unit/style/properties/mod.rs
new file mode 100644
index 0000000000..06a5c2086f
--- /dev/null
+++ b/servo/tests/unit/style/properties/mod.rs
@@ -0,0 +1,70 @@
+/* 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::{Parser, ParserInput};
+use style::context::QuirksMode;
+use style::parser::ParserContext;
+use style::stylesheets::{CssRuleType, Origin};
+use style_traits::{ParseError, ParsingMode};
+
+fn parse<T, F>(f: F, s: &'static str) -> Result<T, ParseError<'static>>
+where
+    F: for<'t> Fn(&ParserContext, &mut Parser<'static, 't>) -> Result<T, ParseError<'static>>,
+{
+    let mut input = ParserInput::new(s);
+    parse_input(f, &mut input)
+}
+
+fn parse_input<'i: 't, 't, T, F>(f: F, input: &'t mut ParserInput<'i>) -> Result<T, ParseError<'i>>
+where
+    F: Fn(&ParserContext, &mut Parser<'i, 't>) -> Result<T, ParseError<'i>>,
+{
+    let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
+    let context = ParserContext::new(
+        Origin::Author,
+        &url,
+        Some(CssRuleType::Style),
+        ParsingMode::DEFAULT,
+        QuirksMode::NoQuirks,
+        None,
+        None,
+    );
+    let mut parser = Parser::new(input);
+    f(&context, &mut parser)
+}
+
+macro_rules! assert_roundtrip_with_context {
+    ($fun:expr, $string:expr) => {
+        assert_roundtrip_with_context!($fun, $string, $string);
+    };
+    ($fun:expr, $input:expr, $output:expr) => {{
+        let serialized = parse(
+            |context, i| {
+                let parsed = $fun(context, i).expect(&format!("Failed to parse {}", $input));
+                let serialized = ToCss::to_css_string(&parsed);
+                assert_eq!(serialized, $output);
+                Ok(serialized)
+            },
+            $input,
+        )
+        .unwrap();
+
+        let mut input = ::cssparser::ParserInput::new(&serialized);
+        let unwrapped = parse_input(
+            |context, i| {
+                let re_parsed =
+                    $fun(context, i).expect(&format!("Failed to parse serialization {}", $input));
+                let re_serialized = ToCss::to_css_string(&re_parsed);
+                assert_eq!(serialized, re_serialized);
+                Ok(())
+            },
+            &mut input,
+        )
+        .unwrap();
+        unwrapped
+    }};
+}
+
+mod scaffolding;
+mod serialization;