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import os
import io
import canmatrix.formats.scapy
def test_scapy_frame_exists():
db = canmatrix.CanMatrix()
db.add_frame(canmatrix.Frame("some_frame"))
outscapy = io.BytesIO()
canmatrix.formats.dump(db, outscapy, "scapy")
assert "class some_frame(SignalPacket):" in outscapy.getvalue().decode("utf8")
def test_scapy_muliplexed_frame():
# here = os.path.dirname(os.path.realpath(__file__))
test_file = "tests/files/dbc/test_frame_decoding.dbc"
db = canmatrix.formats.loadp_flat(test_file)
outscapy = io.BytesIO()
canmatrix.formats.dump(db, outscapy, "scapy")
assert "ConditionalField" in outscapy.getvalue().decode("utf8")
assert "myMuxer == 0" in outscapy.getvalue().decode("utf8")
assert "myMuxer == 1" in outscapy.getvalue().decode("utf8")
def test_scapy_signal_exists():
db = canmatrix.CanMatrix()
db.add_frame(canmatrix.Frame("some_frame"))
db.frame_by_name("some_frame").add_signal(canmatrix.Signal("some_signal", start_bit=3, size=11, factor=1.5, offset=42, unit="cm" ))
outscapy = io.BytesIO()
canmatrix.formats.dump(db, outscapy, "scapy")
assert 'SignalField("some_signal", default=0, start=3, size=11, scaling=1.5, offset=42, unit="cm", fmt="<b")' in outscapy.getvalue().decode("utf8")
def test_scapy_get_fmt():
assert canmatrix.formats.scapy.get_fmt(canmatrix.Signal(is_little_endian=True, is_float=True, is_signed=True)) == "<f"
assert canmatrix.formats.scapy.get_fmt(canmatrix.Signal(is_little_endian=True, is_float=True, is_signed=False)) == "<f"
assert canmatrix.formats.scapy.get_fmt(canmatrix.Signal(is_little_endian=True, is_float=False, is_signed=False)) == "<B"
assert canmatrix.formats.scapy.get_fmt(canmatrix.Signal(is_little_endian=True, is_float=False, is_signed=True)) == "<b"
assert canmatrix.formats.scapy.get_fmt(canmatrix.Signal(is_little_endian=False, is_float=True, is_signed=True)) == ">f"
assert canmatrix.formats.scapy.get_fmt(canmatrix.Signal(is_little_endian=False, is_float=True, is_signed=False)) == ">f"
assert canmatrix.formats.scapy.get_fmt(canmatrix.Signal(is_little_endian=False, is_float=False, is_signed=False)) == ">B"
assert canmatrix.formats.scapy.get_fmt(canmatrix.Signal(is_little_endian=False, is_float=False, is_signed=True)) == ">b"
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