tests/extmod: Add test for uctypes.addressof function.

Signed-off-by: Damien George <damien@micropython.org>

tests/extmod/uctypes_addressof.py

@@ -0,0 +1,16 @@
+# Test uctypes.addressof().
+
+try:
+    from sys import maxsize
+    import uctypes
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+# Test small addresses.
+for i in range(8):
+    print(uctypes.addressof(uctypes.bytearray_at(1 << i, 8)))
+
+# Test address that is bigger than the greatest small-int but still within the address range.
+large_addr = maxsize + 1
+print(uctypes.addressof(uctypes.bytearray_at(large_addr, 8)) == large_addr)

tests/extmod/uctypes_addressof.py.exp

@@ -0,0 +1,9 @@
+1
+2
+4
+8
+16
+32
+64
+128
+True