A collection of apps
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import itertools
import cocotb
from cocotb.clock import Clock
from cocotb.triggers import Timer
@cocotb.test()
def test_and4_reg(dut):
cocotb.fork(Clock(dut.clk, 10, units='ns').start())
yield Timer(5, units='ns')
for d, c, b, a in itertools.product((False, True), repeat=4):
dut.a = a
dut.b = b
dut.c = c
dut.d = d
yield Timer(10, units='ns')
z = a & b & c & d
assert z == dut.z