refactor test macros to handle new errors

tests/imports.rs

@@ -12,7 +12,7 @@ macro_rules! test_import {
                 write!(f, $content).unwrap();
             )*
             let mut buf = Vec::new();
-            StyleSheet::new($input)
+            StyleSheet::new($input.to_string())
             .expect(concat!("failed to parse in "))
             .print_as_css(&mut buf)
             .expect(concat!("failed to pretty print on ", $input));

tests/macros.rs

@@ -8,7 +8,7 @@ macro_rules! test {
         #[allow(non_snake_case)]
         fn $func() {
             let mut buf = Vec::new();
-            grass::StyleSheet::new($input)
+            grass::StyleSheet::new($input.to_string())
                 .expect(concat!("failed to parse on ", $input))
                 .print_as_css(&mut buf)
                 .expect(concat!("failed to pretty print on ", $input));
@@ -24,7 +24,7 @@ macro_rules! test {
         #[allow(non_snake_case)]
         fn $func() {
             let mut buf = Vec::new();
-            grass::StyleSheet::new($input)
+            grass::StyleSheet::new($input.to_string())
                 .expect(concat!("failed to parse on ", $input))
                 .print_as_css(&mut buf)
                 .expect(concat!("failed to pretty print on ", $input));
@@ -36,6 +36,8 @@ macro_rules! test {
     };
 }
 
+/// Verify the error *message*
+/// Span and scope information are not yet tested
 #[macro_export]
 macro_rules! error {
     ($( #[$attr:meta] ),*$func:ident, $input:expr, $err:expr) => {
@@ -43,9 +45,9 @@ macro_rules! error {
         #[test]
         #[allow(non_snake_case)]
         fn $func() {
-            match grass::StyleSheet::new($input) {
+            match grass::StyleSheet::new($input.to_string()) {
                 Ok(..) => panic!("did not fail"),
-                Err(e) => assert_eq!($err, e.to_string().as_str()),
+                Err(e) => assert_eq!($err, e.to_string().chars().take_while(|c| *c != '\n').collect::<String>().as_str()),
             }
         }
     };