tests: Improve coverage of struct with test for non-compliant behaviour.

tests/basics/struct1.py

@@ -103,15 +103,3 @@ try:
     print(struct.unpack_from('<b', buf, -11))
 except:
     print('struct.error')
-
-# pack with too many args, not checked by uPy
-#try:
-#    print(struct.pack('ii', 1, 2, 3))
-#except:
-#    print('struct.error')
-
-# pack with too few args, not checked by uPy
-#try:
-#    print(struct.pack('ii', 1))
-#except:
-#    print('struct.error')

tests/misc/non_compliant.py

 # tests for things that are not implemented, or have non-compliant behaviour
 
 import array
+import ustruct
 
 # array deletion not implemented
 try:
@@ -87,3 +88,9 @@ try:
     del [][2:3:4]
 except NotImplementedError:
     print('NotImplementedError')
+
+# struct pack with too many args, not checked by uPy
+print(ustruct.pack('bb', 1, 2, 3))
+
+# struct pack with too few args, not checked by uPy
+print(ustruct.pack('bb', 1))

tests/misc/non_compliant.py.exp

@@ -12,3 +12,5 @@ NotImplementedError
 NotImplementedError
 NotImplementedError
 NotImplementedError
+b'\x01\x02'
+b'\x01\x00'