def test_value_simple(self):
t = HUnion(
(uint8_t, "unsigned"),
(int8_t, "signed"),
)
v = t.from_py(None)
v.unsigned = mask(8)
self.assertEqual(int(v.signed), -1)
v.signed = 0
self.assertEqual(int(v.unsigned), 0)
def test_value_array_and_bits(self):
t = HUnion(
(uint32_t, "bits"),
(uint8_t[4], "arr"),
)
v = t.from_py(None)
b = (4 << (3 * 8)) | (3 << (2 * 8)) | (2 << 8) | 1
v.bits = b
for i, item in enumerate(v.arr):
self.assertEqual(int(item), i + 1)
self.assertEqual(int(v.bits), b)
def test_value_array_toArray(self):
t = HUnion(
(uint16_t[2], "arr16b"),
(int8_t[4], "arr8b"),
)
v = t.from_py(None)
for i in range(len(v.arr16b)):
v.arr16b[i] = i + 1
for i, item in enumerate(v.arr8b):
if (i + 1) % 2 == 0:
v = 0
else:
v = i // 2 + 1
self.assertEqual(int(item), v)
def test_value_array_of_struct_to_bits(self):
t = HUnion((HStruct(
(uint16_t, "a"),
(uint8_t, "b"),
)[3], "arr"), (Bits(24 * 3), "bits"))
v = t.from_py(None)
for i in range(len(v.arr)):
v.arr[i] = {"a": i + 1, "b": (i + 1) * 3}
self.assertEqual(
int(v.bits), 1
| 3 << 16
| 2 << 24
| 6 << (24 + 16)
| 3 << (2 * 24)
| 9 << (2 * 24 + 16))
def test_value_struct_and_bits(self):
t = HUnion(
(uint16_t, "bits"),
(HStruct(
(uint8_t, "lower"),
(uint8_t, "upper"),
), "struct"),
)
v = t.from_py(None)
v.struct.upper = 1
self.assertEqual(v.bits.val, 1 << 8)
self.assertEqual(v.bits.vld_mask, mask(8) << 8)
v.struct.lower = 1
self.assertEqual(v.bits.val, (1 << 8) | 1)
self.assertEqual(v.bits.vld_mask, mask(16))
v.bits = 2
self.assertEqual(int(v.struct.lower), 2)
self.assertEqual(int(v.struct.upper), 0)