File size: 2,147 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 | import os
import sys
import tempfile
import pytest
from cocotb.runner import get_runner
from cocotb.utils import _get_log_time_scale
from test_cocotb import (
compile_args,
gpi_interfaces,
hdl_toplevel,
hdl_toplevel_lang,
sim,
sim_args,
sim_build,
tests_dir,
verilog_sources,
vhdl_sources,
)
sys.path.insert(0, os.path.join(tests_dir, "pytest"))
cocotb_test_contents = """
import cocotb
from cocotb.utils import _get_simulator_precision
@cocotb.test()
async def check_timescale(dut):
assert _get_simulator_precision() == {precision}
"""
@pytest.mark.simulator_required
@pytest.mark.skipif(
os.getenv("SIM", "icarus") not in ["icarus", "ghdl"],
reason="Currently only Icarus and GHDL support timescale setting when using Cocotb runner",
)
@pytest.mark.parametrize("precision", ["fs", "ps", "ns", "us", "ms", "s"])
def test_precision(precision):
build_dir = os.path.join(sim_build, f"test_timescale_{precision}")
timescale = (f"1{precision}", f"1{precision}")
precision_log = _get_log_time_scale(precision if precision != "s" else "sec")
with tempfile.TemporaryDirectory() as d:
sys.path.insert(0, d)
test_module_path = os.path.join(d, "test_precision.py")
test_module = os.path.basename(os.path.splitext(test_module_path)[0])
with open(test_module_path, "w") as f:
f.write(cocotb_test_contents.format(precision=precision_log))
f.flush()
runner = get_runner(sim)
runner.build(
always=True,
clean=True,
verilog_sources=verilog_sources,
vhdl_sources=vhdl_sources,
hdl_toplevel=hdl_toplevel,
build_dir=build_dir,
build_args=compile_args,
defines={"NOTIMESCALE": 1},
timescale=timescale,
)
runner.test(
hdl_toplevel_lang=hdl_toplevel_lang,
hdl_toplevel=hdl_toplevel,
gpi_interfaces=gpi_interfaces,
test_module=test_module,
test_args=sim_args,
build_dir=build_dir,
timescale=timescale,
)
|