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# https://docs.cocotb.org/en/stable/quickstart.html
# test_my_design.py (extended)
import cocotb
from cocotb.triggers import FallingEdge, Timer
async def generate_clock(dut):
"""Generate clock pulses."""
for cycle in range(10):
dut.clk.value = 0
await Timer(1, units="ns")
dut.clk.value = 1
await Timer(1, units="ns")
@cocotb.test()
async def my_second_test(dut):
"""Try accessing the design."""
await cocotb.start(generate_clock(dut)) # run the clock "in the background"
await Timer(5, units="ns") # wait a bit
await FallingEdge(dut.clk) # wait for falling edge/"negedge"
dut._log.info("my_signal_1 is %s", dut.my_signal_1.value)
assert dut.my_signal_2.value[0] == 0, "my_signal_2[0] is not 0!"
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