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[version-test] Work around bugs in v0.7.3 dict builder

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Before calling a dictionary good, make sure that it can compress an
input. If v0.7.3 rejects v0.7.3's dictionary, fall back to the v1.0
dictionary. This is not the job of the verison test to test it, because
we cannot fix this code.
This commit is contained in:
Nick Terrell 2023-01-23 20:23:43 -08:00 • committed by Nick Terrell
parent 8957fef554
commit 321490cd5b
1 changed files with 13 additions and 1 deletions
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14
tests/test-zstd-versions.py
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@ -85,6 +85,18 @@ def get_git_tags():
return tags
def dict_ok(tag, dict_name, sample):
if not os.path.isfile(dict_name):
return False
try:
cmd = ['./zstd.' + tag, '-D', dict_name]
with open(sample, "rb") as i:
subprocess.check_call(cmd, stdin=i, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
return True
except:
return False
def create_dict(tag, dict_source_path, fallback_tag=None):
dict_name = 'dict.' + tag
if not os.path.isfile(dict_name):
@ -96,7 +108,7 @@ def create_dict(tag, dict_source_path, fallback_tag=None):
result = execute('./dictBuilder.' + tag + ' ' + ' '.join(files) + ' -o ' + dict_name, print_output=False, param_shell=True)
else:
result = execute('./zstd.' + tag + ' -f --train ' + ' '.join(files) + ' -o ' + dict_name, print_output=False, param_shell=True)
if result == 0 and os.path.isfile(dict_name):
if result == 0 and dict_ok(tag, dict_name, files[0]):
print(dict_name + ' created')
elif fallback_tag is not None:
fallback_dict_name = 'dict.' + fallback_tag