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import unittest
from datetime import datetime
from siobrultech_protocols.gem.fields import (
ArrayField,
ByteField,
ByteOrder,
BytesField,
DateTimeField,
FloatingPointArrayField,
FloatingPointField,
NumericArrayField,
NumericField,
Sign,
)
class TestFieldParsing(unittest.TestCase):
def testByteFieldRead(self):
self.assertEqual(b"c", ByteField().read(b"abcdefg", 2))
def testBytesFieldRead(self):
self.assertEqual(b"cdef", BytesField(4).read(b"abcdefg", 2))
def testNumericFieldHiToLoRead(self):
self.assertEqual(
1, NumericField(2, ByteOrder.HiToLo, Sign.Unsigned).read(b"\x02\x00\x01", 1)
)
def testNumericFieldHiToLoSignedRead(self):
self.assertEqual(
-1, NumericField(2, ByteOrder.HiToLo, Sign.Signed).read(b"\x02\x80\x01", 1)
)
def testNumericFieldLoToHiRead(self):
self.assertEqual(
256,
NumericField(2, ByteOrder.LoToHi, Sign.Unsigned).read(b"\x02\x00\x01", 1),
)
def testNumericFieldLoToHiSignedRead(self):
self.assertEqual(
-256,
NumericField(2, ByteOrder.LoToHi, Sign.Signed).read(b"\x02\x00\x81", 1),
)
def testNumericFieldUnsignedMax(self):
field = NumericField(2, ByteOrder.HiToLo, Sign.Unsigned)
self.assertEqual(
field.read(b"\xff\xff", 0),
field.max,
)
def testNumericFieldSignedMax(self):
field = NumericField(2, ByteOrder.HiToLo, Sign.Signed)
self.assertEqual(
field.read(b"\x7f\xff", 0),
field.max,
)
def testFloatingPointFieldRead(self):
self.assertEqual(
0.5,
FloatingPointField(2, ByteOrder.HiToLo, Sign.Unsigned, 2.0).read(
b"\x02\x00\x01", 1
),
)
def testFloatingPointFieldReadDiv100(self):
self.assertEqual(
1.16,
FloatingPointField(2, ByteOrder.HiToLo, Sign.Unsigned, 100.0).read(
b"\x02\x00\x74", 1
),
)
def testDateTimeFieldRead(self):
self.assertEqual(
datetime(2020, 1, 1, 0, 0, 0),
DateTimeField().read(b"\x02\x14\x01\x01\x00\x00\x00", 1),
)
def testArrayFieldRead(self):
self.assertEqual(
[1, 2, 3, 4],
ArrayField(4, NumericField(2, ByteOrder.HiToLo, Sign.Unsigned)).read(
b"\x05\x00\x01\x00\x02\x00\x03\x00\x04", 1
),
)
def testNumericArrayFieldRead(self):
self.assertEqual(
[1, 2, 3, 4],
NumericArrayField(4, 2, ByteOrder.HiToLo, Sign.Unsigned).read(
b"\x05\x00\x01\x00\x02\x00\x03\x00\x04", 1
),
)
def testFloatingPointArrayFieldRead(self):
self.assertEqual(
[0.5, 1.0, 1.5, 2.0],
FloatingPointArrayField(4, 2, ByteOrder.HiToLo, Sign.Unsigned, 2.0).read(
b"\x05\x00\x01\x00\x02\x00\x03\x00\x04", 1
),
)
class TestFieldFormatting(unittest.TestCase):
def setUp(self):
self._buffer = bytearray()
def testByteFieldWrite(self):
ByteField().write(ord("c"), self._buffer)
self.assertEqual(b"c", self._buffer)
def testBytesFieldWrite(self):
BytesField(4).write(b"cdef", self._buffer)
self.assertEqual(b"cdef", self._buffer)
def testNumericFieldHiToLoWrite(self):
NumericField(2, ByteOrder.HiToLo, Sign.Signed).write(1, self._buffer)
self.assertEqual(b"\x00\x01", self._buffer)
def testNumericFieldHiToLoSignedWrite(self):
NumericField(2, ByteOrder.HiToLo, Sign.Signed).write(-1, self._buffer)
self.assertEqual(b"\x80\x01", self._buffer)
def testNumericFieldLoToHiWrite(self):
NumericField(2, ByteOrder.LoToHi, Sign.Signed).write(256, self._buffer)
self.assertEqual(b"\x00\x01", self._buffer)
def testNumericFieldLoToHiSignedWrite(self):
NumericField(2, ByteOrder.LoToHi, Sign.Signed).write(-256, self._buffer)
self.assertEqual(b"\x00\x81", self._buffer)
def testNumericFieldUnsignedMax(self):
field = NumericField(2, ByteOrder.HiToLo, Sign.Unsigned)
field.write(field.max, self._buffer)
self.assertEqual(b"\xff\xff", self._buffer)
def testNumericFieldSignedMax(self):
field = NumericField(2, ByteOrder.HiToLo, Sign.Signed)
field.write(field.max, self._buffer)
self.assertEqual(b"\x7f\xff", self._buffer)
def testFloatingPointFieldWrite(self):
FloatingPointField(2, ByteOrder.HiToLo, Sign.Unsigned, 2.0).write(
0.5, self._buffer
)
self.assertEqual(b"\x00\x01", self._buffer)
def testFloatingPointFieldWriteDiv100(self):
FloatingPointField(2, ByteOrder.HiToLo, Sign.Unsigned, 100.0).write(
1.16, self._buffer
)
self.assertEqual(b"\x00\x74", self._buffer)
def testDateTimeFieldWrite(self):
DateTimeField().write(datetime(2020, 1, 1, 0, 0, 0), self._buffer)
self.assertEqual(b"\x14\x01\x01\x00\x00\x00", self._buffer)
def testArrayFieldWrite(self):
ArrayField(4, NumericField(2, ByteOrder.HiToLo, Sign.Unsigned)).write(
[1, 2, 3, 4], self._buffer
)
self.assertEqual(b"\x00\x01\x00\x02\x00\x03\x00\x04", self._buffer)
def testNumericArrayFieldWrite(self):
NumericArrayField(4, 2, ByteOrder.HiToLo, Sign.Unsigned).write(
[1, 2, 3, 4], self._buffer
)
self.assertEqual(b"\x00\x01\x00\x02\x00\x03\x00\x04", self._buffer)
def testFloatingPointArrayFieldWrite(self):
FloatingPointArrayField(4, 2, ByteOrder.HiToLo, Sign.Unsigned, 2.0).write(
[0.5, 1.0, 1.5, 2.0], self._buffer
)
self.assertEqual(b"\x00\x01\x00\x02\x00\x03\x00\x04", self._buffer)
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