def test_null_string():
v = ua.Variant(None, ua.VariantType.String)
b = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(b))
assert v.Value == v2.Value
v = ua.Variant("", ua.VariantType.String)
b = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(b))
assert v.Value == v2.Value
def test_variant_array_none():
v = ua.Variant(None, varianttype=ua.VariantType.Int32, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
assert v == v2
assert v2.is_array
v = ua.Variant(None, varianttype=ua.VariantType.Null, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
assert v == v2
assert v2.is_array
def test_variant_array():
v = ua.Variant([1, 2, 3, 4, 5])
assert v.Value[1] == 2
# assert v.VarianType, ua.VariantType.Int64) # we do not care, we should aonly test for sutff that matter
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
assert v.Value == v2.Value
assert v.VariantType == v2.VariantType
now = datetime.utcnow()
v = ua.Variant([now])
assert v.Value[0] == now
assert v.VariantType == ua.VariantType.DateTime
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
assert v.Value == v2.Value
assert v.VariantType == v2.VariantType
def test_variant_dimensions():
l = [[[1.0, 1.0, 1.0, 1.0], [2.0, 2.0, 2.0, 2.0], [3.0, 3.0, 3.0, 3.0]], [[5.0, 5.0, 5.0, 5.0], [7.0, 8.0, 9.0, 01.0], [1.0, 1.0, 1.0, 1.0]]]
v = ua.Variant(l)
assert [2, 3, 4] == v.Dimensions
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
assert v == v2
assert v.Dimensions == v2.Dimensions
# very special case
l = [[[], [], []], [[], [], []]]
v = ua.Variant(l, ua.VariantType.UInt32)
assert [2, 3, 0] == v.Dimensions
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
assert v.Dimensions == v2.Dimensions
assert v == v2
def test_custom_variant():
with pytest.raises(ua.UaError):
v = ua.Variant(b"ljsdfljds", ua.VariantTypeCustom(89))
v = ua.Variant(b"ljsdfljds", ua.VariantTypeCustom(61))
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
assert v.VariantType == v2.VariantType
assert v == v2
def test_variant_array_dim():
v = ua.Variant([1, 2, 3, 4, 5, 6], dimensions=[2, 3])
assert v.Value[1] == 2
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
assert _reshape(v.Value, (2, 3)) == v2.Value
assert v.VariantType == v2.VariantType
assert v.Dimensions == v2.Dimensions
assert v2.Dimensions == [2, 3]
def test_variant_empty_list():
v = ua.Variant([], VariantType=ua.VariantType.Int32, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
assert v == v2
assert v2.is_array
assert v2.Dimensions is None
v = ua.Variant([],
VariantType=ua.VariantType.Int32,
is_array=True,
Dimensions=[0])
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
assert v == v2
assert v2.is_array
assert v2.Dimensions == [0]
def test_extension_object():
obj = ua.UserNameIdentityToken()
obj.UserName = "******"
obj.Password = b"pass"
obj2 = extensionobject_from_binary(ua.utils.Buffer(extensionobject_to_binary(obj)))
assert type(obj) == type(obj2)
assert obj.UserName == obj2.UserName
assert obj.Password == obj2.Password
v1 = ua.Variant(obj)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v1)))
assert type(v1) == type(v2)
assert v1.VariantType == v2.VariantType
def test_variant_array_none():
v = ua.Variant(None, VariantType=ua.VariantType.Int32, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
assert v == v2
assert v2.is_array
assert v2.Dimensions is None
v = ua.Variant(None, VariantType=ua.VariantType.Null, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
assert v == v2
assert v2.is_array
assert v2.Dimensions is None
v = ua.Variant(None, VariantType=ua.VariantType.Null, Dimensions=[0, 0])
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
assert v == v2
assert v2.is_array
assert v2.Dimensions == [0, 0]
def test_variant():
dv = ua.Variant(True, ua.VariantType.Boolean)
assert dv.Value == True
assert type(dv.Value) == bool
now = datetime.utcnow()
v = ua.Variant(now)
assert v.Value == now
assert v.VariantType == ua.VariantType.DateTime
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
assert v.Value == v2.Value
assert v.VariantType == v2.VariantType
# commonity method:
assert v == ua.Variant(v)
def test_builtin_type_variant():
v = ua.Variant(ua.Int16(4))
assert v.VariantType == ua.VariantType.Int16
v = ua.Variant(ua.UInt64(4))
assert v.VariantType == ua.VariantType.UInt64
b = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(b))
assert v == v2
v = ua.Variant(ua.Byte(4))
assert v.VariantType == ua.VariantType.Byte
v = ua.Variant(ua.ByteString(b"hj"))
assert v.VariantType == ua.VariantType.ByteString
v = ua.Variant(4, ua.Byte)
assert v.VariantType == ua.VariantType.Byte
v = ua.Variant(None, ua.String)
assert v.VariantType == ua.VariantType.String
def test_variant_empty_list():
v = ua.Variant([], varianttype=ua.VariantType.Int32, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
assert v == v2
assert v2.is_array
def test_guid():
v = ua.Variant(uuid.uuid4(), ua.VariantType.Guid)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
assert v.VariantType == v2.VariantType
assert v == v2
def test_custom_variant_array():
v = ua.Variant([b"ljsdfljds", b"lkjsdljksdf"], ua.VariantTypeCustom(40))
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
assert v.VariantType == v2.VariantType
assert v == v2
