[librsvg: 2/7] Test that "transform: none" computes to an identity transform

[Marge Bot <marge-bot src gnome org>]

commit 8afa001ba1b24baf2350de4b8925c2f5b6f8bb66
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Aug 31 17:48:57 2021 -0500

    Test that "transform: none" computes to an identity transform
    
    Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/582>

 src/transform.rs | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/src/transform.rs b/src/transform.rs
index 80bae8f6..40a7e57f 100644
--- a/src/transform.rs
+++ b/src/transform.rs
@@ -892,6 +892,14 @@ mod tests {
         );
     }
 
+    #[test]
+    fn none_transform_is_identity() {
+        assert_eq!(
+            parse_transform_prop("none").unwrap().to_transform(),
+            Transform::identity()
+        );
+    }
+
     #[test]
     fn test_parse_transform_property_matrix() {
         let tp = TransformProperty::List(vec![TransformFunction::Matrix(