[librsvg] viewport.rs: Give better names to the test functions

[Federico Mena Quintero <federico src gnome org>]

commit 1bc6a60d85354650b8da9f4bfc5d3e32853b530d
Author: Federico Mena Quintero <federico gnome org>
Date:   Thu Sep 28 09:13:34 2017 -0500

    viewport.rs: Give better names to the test functions

 rust/src/viewport.rs |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/rust/src/viewport.rs b/rust/src/viewport.rs
index 394323d..96ea968 100644
--- a/rust/src/viewport.rs
+++ b/rust/src/viewport.rs
@@ -200,7 +200,7 @@ mod tests {
     }
 
     #[test]
-    fn clip_after_layer_push() {
+    fn clip_to_viewport() {
         let mut affine = cairo::Matrix::identity();
         affine.scale(0.20, 0.20);
 
@@ -229,7 +229,7 @@ mod tests {
     }
 
     #[test]
-    fn clip_before_layer_push() {
+    fn clip_to_vbox() {
         let mut affine = cairo::Matrix::identity();
         affine.translate(10.0, 10.0);
         affine.scale(0.40, 0.40);