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# Copyright (c) 2021 Arm Limited
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"""
Test file for the hdf5 stats.
It just runs an SE simulation with the hdf5 stats and checks that the
simulation succeeds and the stats file exists.
No specific checks on the stats are performed.
"""
import re
import os
from testlib import *

if config.bin_path:
    resource_path = config.bin_path
else:
    resource_path = joinpath(absdirpath(__file__), '..', 'resources')

def have_hdf5():
    have_hdf5_file = os.path.join(
        config.base_dir, "build", constants.arm_tag, "config", "have_hdf5.hh"
    )
    with open(have_hdf5_file) as f:
        content = f.read()

    result = re.match("#define HAVE_HDF5 ([0-1])", content)
    if not result:
        raise Exception(f"Unable to find the HAVE_HDF5 in {have_hdf5_file}")
    else:
        return result.group(1) == "1"


if have_hdf5():
    ok_exit_regex = re.compile(
        r"Exiting @ tick \d+ because exiting with last active thread context"
    )
    ok_verifier = verifier.MatchRegex(ok_exit_regex)

    # FIXME: flaky, should check return code instead...
    # See: https://gem5.atlassian.net/browse/GEM5-1099
    err_regex = re.compile(
        r'RuntimeError: Failed creating H5::DataSet \w+; .*'
    )
    err_verifier = verifier.NoMatchRegex(err_regex, True, False)

    h5_verifier = verifier.CheckH5StatsExist()

    gem5_verify_config(
        name="hdf5_test",
        verifiers=[ok_verifier, err_verifier, h5_verifier],
        fixtures=(),
        config=joinpath(
            config.base_dir,
            "tests",
            "gem5",
            "configs",
            "simple_binary_run.py",
        ),
        config_args=[
            "arm-hello64-static",
            "atomic",
            "--resource-directory",
            resource_path,
        ],
        gem5_args=["--stats-file=h5://stats.h5"],
        valid_isas=(constants.arm_tag,),
    )