Add to_shape test

Author: bluss

tests/reshape.rs

@@ -149,3 +149,11 @@ fn to_shape_copy_stride() {
     assert_eq!(lin2, array![1, 5, 2, 6, 3, 7]);
     assert!(lin2.is_owned());
 }
+
+#[test]
+#[should_panic(expected = "IncompatibleShape")]
+fn to_shape_error1() {
+    let data = [1, 2, 3, 4, 5, 6, 7, 8];
+    let v = aview1(&data);
+    let _u = v.to_shape((2, 5)).unwrap();
+}