mmdebstrap/coverage.py

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#!/usr/bin/env python3
from debian.deb822 import Deb822, Release
import email.utils
import os
import sys
import shutil
import subprocess
import argparse
import time
from datetime import timedelta
from collections import defaultdict
from itertools import product
have_qemu = os.getenv("HAVE_QEMU", "yes") == "yes"
have_unshare = os.getenv("HAVE_UNSHARE", "yes") == "yes"
have_binfmt = os.getenv("HAVE_BINFMT", "yes") == "yes"
run_ma_same_tests = os.getenv("RUN_MA_SAME_TESTS", "yes") == "yes"
cmd = os.getenv("CMD", "./mmdebstrap")
default_dist = os.getenv("DEFAULT_DIST", "unstable")
all_dists = ["oldstable", "stable", "testing", "unstable"]
default_mode = "auto" if have_unshare else "root"
all_modes = ["auto", "root", "unshare", "fakechroot", "chrootless"]
default_variant = "apt"
all_variants = [
"extract",
"custom",
"essential",
"apt",
"minbase",
"buildd",
"-",
"standard",
]
default_format = "auto"
all_formats = ["auto", "directory", "tar", "squashfs", "ext2", "null"]
mirror = os.getenv("mirror", "http://127.0.0.1/debian")
hostarch = subprocess.check_output(["dpkg", "--print-architecture"]).decode().strip()
release_path = f"./shared/cache/debian/dists/{default_dist}/Release"
if not os.path.exists(release_path):
print("path doesn't exist:", release_path, file=sys.stderr)
print("run ./make_mirror.sh first", file=sys.stderr)
exit(1)
if os.getenv("SOURCE_DATE_EPOCH") is not None:
s_d_e = os.getenv("SOURCE_DATE_EPOCH")
else:
with open(release_path) as f:
rel = Release(f)
s_d_e = str(email.utils.mktime_tz(email.utils.parsedate_tz(rel["Date"])))
separator = (
"------------------------------------------------------------------------------"
)
def skip(condition, dist, mode, variant, fmt):
if not condition:
return ""
for line in condition.splitlines():
if not line:
continue
if eval(line):
return line.strip()
return ""
def parse_config(confname):
config_dict = defaultdict(dict)
config_order = list()
all_vals = {
"Dists": all_dists,
"Modes": all_modes,
"Variants": all_variants,
"Formats": all_formats,
}
with open(confname) as f:
for test in Deb822.iter_paragraphs(f):
if "Test" not in test.keys():
print("Test without name", file=sys.stderr)
exit(1)
name = test["Test"]
config_order.append(name)
for k in test.keys():
v = test[k]
if k not in [
"Test",
"Dists",
"Modes",
"Variants",
"Formats",
"Skip-If",
"Needs-QEMU",
"Needs-Root",
]:
print(f"Unknown field name {k} in test {name}")
exit(1)
if k in all_vals.keys():
if v == "default":
print(
f"Setting {k} to default in Test {name} is redundant",
file=sys.stderr,
)
exit(1)
if v == "any":
v = all_vals[k]
else:
# else, split the value by whitespace
v = v.split()
for i in v:
if i not in all_vals[k]:
print(
f"{i} is not a valid value for {k}", file=sys.stderr
)
exit(1)
config_dict[name][k] = v
return config_order, config_dict
def format_failed(num, total, name, dist, mode, variant, fmt, config_dict):
ret = f"({num}/{total}) {name}"
if len(config_dict[name].get("Dists", [])) > 0:
ret += f" --dist={dist}"
if len(config_dict[name].get("Modes", [])) > 0:
ret += f" --mode={mode}"
if len(config_dict[name].get("Variants", [])) > 0:
ret += f" --variant={variant}"
if len(config_dict[name].get("Formats", [])) > 0:
ret += f" --format={fmt}"
return ret
def main():
parser = argparse.ArgumentParser()
parser.add_argument("test", nargs="*", help="only run these tests")
parser.add_argument(
"-x",
"--exitfirst",
action="store_const",
dest="maxfail",
const=1,
help="exit instantly on first error or failed test.",
)
parser.add_argument(
"--maxfail",
metavar="num",
action="store",
type=int,
dest="maxfail",
default=0,
help="exit after first num failures or errors.",
)
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parser.add_argument(
"--mode",
metavar="mode",
help=f"only run tests with this mode (Default = {default_mode})",
)
parser.add_argument(
"--dist",
metavar="dist",
help=f"only run tests with this dist (Default = {default_dist})",
)
parser.add_argument(
"--variant",
metavar="variant",
help=f"only run tests with this variant (Default = {default_variant})",
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)
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parser.add_argument(
"--format",
metavar="format",
help=f"only run tests with this format (Default = {default_format})",
)
args = parser.parse_args()
# copy over files from git or as distributed
for (git, dist, target) in [
("./mmdebstrap", "/usr/bin/mmdebstrap", "mmdebstrap"),
("./tarfilter", "/usr/bin/mmtarfilter", "tarfilter"),
(
"./proxysolver",
"/usr/lib/apt/solvers/mmdebstrap-dump-solution",
"proxysolver",
),
(
"./ldconfig.fakechroot",
"/usr/libexec/mmdebstrap/ldconfig.fakechroot",
"ldconfig.fakechroot",
),
]:
if os.path.exists(git):
shutil.copy(git, f"shared/{target}")
else:
shutil.copy(dist, f"shared/{target}")
# copy over hooks from git or as distributed
if os.path.exists("hooks"):
shutil.copytree("hooks", "shared/hooks", dirs_exist_ok=True)
else:
shutil.copytree(
"/usr/share/mmdebstrap/hooks", "shared/hooks", dirs_exist_ok=True
)
# parse coverage.txt
config_order, config_dict = parse_config("coverage.txt")
# produce the list of tests using the cartesian product of all allowed
# dists, modes, variants and formats of a given test
tests = []
for name in config_order:
test = config_dict[name]
for dist, mode, variant, fmt in product(
test.get("Dists", [default_dist]),
test.get("Modes", [default_mode]),
test.get("Variants", [default_variant]),
test.get("Formats", [default_format]),
):
skipreason = skip(test.get("Skip-If"), dist, mode, variant, fmt)
if skipreason:
tt = ("skip", skipreason)
elif have_qemu:
tt = "qemu"
elif test.get("Needs-QEMU", "false") == "true":
tt = ("skip", "test needs QEMU")
elif test.get("Needs-Root", "false") == "true":
tt = "sudo"
elif mode == "auto" and not have_unshare:
tt = "sudo"
elif mode == "root":
tt = "sudo"
elif mode == "unshare" and not have_unshare:
tt = ("skip", "test needs unshare")
else:
tt = "null"
tests.append((tt, name, dist, mode, variant, fmt))
torun = []
num_tests = len(tests)
if args.test:
# check if all given tests are either a valid name or a valid number
for test in args.test:
if test in [name for (_, name, _, _, _, _) in tests]:
continue
if not test.isdigit():
print(f"cannot find test named {test}", file=sys.stderr)
exit(1)
if int(test) >= len(tests) or int(test) <= 0 or str(int(test)) != test:
print(f"test number {test} doesn't exist", file=sys.stderr)
exit(1)
for i, (_, name, _, _, _, _) in enumerate(tests):
# if either the number or test name matches, then we use this test,
# otherwise we skip it
if name in args.test:
torun.append(i)
if str(i + 1) in args.test:
torun.append(i)
num_tests = len(torun)
starttime = time.time()
skipped = defaultdict(list)
failed = []
num_success = 0
num_finished = 0
for i, (test, name, dist, mode, variant, fmt) in enumerate(tests):
if torun and i not in torun:
continue
print(separator, file=sys.stderr)
print("(%d/%d) %s" % (i + 1, len(tests), name), file=sys.stderr)
print("dist: %s" % dist, file=sys.stderr)
print("mode: %s" % mode, file=sys.stderr)
print("variant: %s" % variant, file=sys.stderr)
print("format: %s" % fmt, file=sys.stderr)
if num_finished > 0:
currenttime = time.time()
timeleft = timedelta(
seconds=int(
(num_tests - num_finished)
* (currenttime - starttime)
/ num_finished
)
)
print("time left: %s" % timeleft, file=sys.stderr)
if failed:
print("failed: %d" % len(failed), file=sys.stderr)
num_finished += 1
with open("tests/" + name) as fin, open("shared/test.sh", "w") as fout:
for line in fin:
line = line.replace("{{ CMD }}", cmd)
line = line.replace("{{ SOURCE_DATE_EPOCH }}", s_d_e)
line = line.replace("{{ DIST }}", dist)
line = line.replace("{{ MIRROR }}", mirror)
line = line.replace("{{ MODE }}", mode)
line = line.replace("{{ VARIANT }}", variant)
line = line.replace("{{ FORMAT }}", fmt)
line = line.replace("{{ HOSTARCH }}", hostarch)
fout.write(line)
argv = None
match test:
case "qemu":
argv = ["./run_qemu.sh"]
case "sudo":
argv = ["./run_null.sh", "SUDO"]
case "null":
argv = ["./run_null.sh"]
case ("skip", reason):
skipped[reason].append(
("(%d/%d) %s" % (i + 1, len(tests), name), dist, mode, variant, fmt)
)
print(f"skipped because of {reason}", file=sys.stderr)
continue
print(separator, file=sys.stderr)
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if args.dist and args.dist != dist:
print(f"skipping because of --dist={args.dist}", file=sys.stderr)
continue
if args.mode and args.mode != mode:
print(f"skipping because of --mode={args.mode}", file=sys.stderr)
continue
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if args.variant and args.variant != variant:
print(f"skipping because of --variant={args.variant}", file=sys.stderr)
continue
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if args.format and args.format != fmt:
print(f"skipping because of --format={args.format}", file=sys.stderr)
continue
proc = subprocess.Popen(argv)
try:
proc.wait()
except KeyboardInterrupt:
proc.terminate()
proc.wait()
break
print(separator, file=sys.stderr)
if proc.returncode != 0:
failed.append(
format_failed(
i + 1, len(tests), name, dist, mode, variant, fmt, config_dict
)
)
print("result: FAILURE", file=sys.stderr)
else:
print("result: SUCCESS", file=sys.stderr)
num_success += 1
if args.maxfail and len(failed) >= args.maxfail:
break
print(
"successfully ran %d tests" % num_success,
file=sys.stderr,
)
if skipped:
print("skipped %d:" % sum([len(v) for v in skipped.values()]), file=sys.stderr)
for reason, l in skipped.items():
print(f"skipped because of {reason}:", file=sys.stderr)
for t in l:
print(f" {t}", file=sys.stderr)
if failed:
print("failed %d:" % len(failed), file=sys.stderr)
for f in failed:
print(f, file=sys.stderr)
exit(1)
if __name__ == "__main__":
main()