Tweak Sink / Source

test/test_buf.rs

@@ -54,6 +54,6 @@ fn test_vec_sink_capacity() {
     sink.reserve(16);
     assert!(sink.capacity() >= 16, "Capacity {} must be at least 16", sink.capacity());
     let mut source = Cursor::new(b"0123456789abcdef0123456789abcdef");
-    sink.copy_from(&mut source);
+    sink.sink(&mut source);
     assert!(sink.len() <= sink.capacity(), "Length {} must be less than or equal to capacity {}", sink.len(), sink.capacity());
 }

test/test_rope.rs

@@ -38,12 +38,14 @@ pub fn test_rope_slice() {
     let left = bytes.slice_to(250);
     assert_eq!(250, left.len());
 
+    dst.clear();
     left.buf().copy_to(&mut dst);
     assert_eq!(dst, &TEST_BYTES_1[..250]);
 
     let right = bytes.slice_from(250);
     assert_eq!(TEST_BYTES_1.len() - 250, right.len());
 
+    dst.clear();
     right.buf().copy_to(&mut dst);
     // assert_eq!(dst, &TEST_BYTES_1[250..]);
 }