File size: 3,140 Bytes
cb65407 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | # Copyright cocotb contributors
# Licensed under the Revised BSD License, see LICENSE for details.
# SPDX-License-Identifier: BSD-3-Clause
import pytest
from cocotb.types import Logic, LogicArray, Range, concat
def test_logic_array_constructor():
LogicArray([False, 1, "X", Logic("Z")])
l = LogicArray("01XZ")
assert all(isinstance(v, Logic) for v in l)
with pytest.raises(ValueError):
LogicArray([object()])
assert LogicArray(range=Range(0, "to", 3)) == LogicArray("XXXX")
assert LogicArray(0) == LogicArray("0")
assert LogicArray(0xA7) == LogicArray("10100111")
assert LogicArray(-1) == LogicArray("1")
assert LogicArray(10, Range(5, "downto", 0)) == LogicArray("001010")
assert LogicArray(-2, Range(5, "downto", 0)) == LogicArray("111110")
with pytest.raises(ValueError):
LogicArray(10, Range(1, "to", 3))
with pytest.raises(TypeError):
LogicArray(object())
with pytest.raises(ValueError):
LogicArray("101010", Range(0, "to", 0))
with pytest.raises(ValueError):
LogicArray()
def test_logic_array_properties():
assert LogicArray(0).integer == 0
assert LogicArray(0).signed_integer == 0
assert LogicArray(0).binstr == "0"
assert LogicArray(10).integer == 10
assert LogicArray(10).signed_integer == -6
assert LogicArray(10).binstr == "1010"
assert LogicArray(-6).integer == 10
assert LogicArray(-6).signed_integer == -6
assert LogicArray(-6).binstr == "1010"
assert LogicArray(0).is_resolvable
assert not LogicArray("1X1").is_resolvable
def test_logic_array_setattr():
l = LogicArray("0000")
l[1] = "X"
assert l == LogicArray("00X0")
with pytest.raises(TypeError):
l[object()] = "X"
def test_logic_array_repr():
l = LogicArray("1XX110")
assert eval(repr(l)) == l
def test_logic_array_concat():
l = LogicArray("01ZX", Range(0, "to", 3))
p = LogicArray("1101")
assert concat(l, p) == LogicArray("01ZX1101")
with pytest.raises(TypeError):
concat(l, "nope")
def test_logic_array_and():
l = LogicArray("0011XZ")
p = LogicArray("011010")
assert (l & p) == LogicArray("0010X0")
with pytest.raises(TypeError):
l & object()
with pytest.raises(TypeError):
object() & l
with pytest.raises(ValueError):
LogicArray("") & LogicArray("01")
def test_logic_array_or():
l = LogicArray("0011XZ")
p = LogicArray("011010", Range(-9, "downto", -14))
assert (l | p) == LogicArray("01111X")
with pytest.raises(TypeError):
l | object()
with pytest.raises(TypeError):
object() | l
with pytest.raises(ValueError):
LogicArray("") | LogicArray("01")
def test_logic_array_xor():
l = LogicArray("0011XZ")
p = LogicArray("011010")
assert (l ^ p) == LogicArray("0101XX")
with pytest.raises(TypeError):
l ^ object()
with pytest.raises(TypeError):
object() ^ l
with pytest.raises(ValueError):
LogicArray("") ^ LogicArray("01")
def test_logic_array_invert():
assert ~LogicArray("01XZ") == LogicArray("10XX")
|