Add test for Debug impl on Array (#207)

Author: tarcieri

tests/mod.rs

@@ -155,6 +155,12 @@ fn cast_slice_to_core_mut() {
     assert_eq!(slice[1], [3, 4]);
 }
 
+#[test]
+fn debug() {
+    let arr: Array<u8, U3> = Array([1, 2, 3]);
+    assert_eq!(format!("{arr:?}"), "Array([1, 2, 3])");
+}
+
 #[test]
 fn from_hybrid_array_for_core_array() {
     let hybrid_arr: Array<u8, U2> = Array([1, 2]);