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extmod: Add test which demonstrates LITTLE_ENDIAN packing failure

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Dave Hylands 2015-12-09 11:47:31 -05:00 committed by Paul Sokolovsky
parent e84325bd1d
commit 5a4a2b1db3
2 changed files with 6 additions and 0 deletions
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5
tests/extmod/uctypes_sizeof.py
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@ -6,6 +6,7 @@ desc = {
# arr2 is array at offset 0, size 2, of structures defined recursively # arr2 is array at offset 0, size 2, of structures defined recursively
"arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}), "arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
"arr3": (uctypes.ARRAY | 2, uctypes.UINT16 | 2), "arr3": (uctypes.ARRAY | 2, uctypes.UINT16 | 2),
"arr4": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0, "w": uctypes.UINT16 | 1})
} }
data = bytearray(b"01234567") data = bytearray(b"01234567")
@ -24,3 +25,7 @@ try:
print(uctypes.sizeof(S.arr3[0])) print(uctypes.sizeof(S.arr3[0]))
except TypeError: except TypeError:
print("TypeError") print("TypeError")
print(uctypes.sizeof(S.arr4))
assert uctypes.sizeof(S.arr4) == 6

1
tests/extmod/uctypes_sizeof.py.exp
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@ -2,3 +2,4 @@
2 2
4 4
TypeError TypeError
6