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rust: Add type annotation to fix inference on Rust Nightly...
rust: Add type annotation to fix inference on Rust Nightly When compiling with Rust Nightly, the im-rs crate silently makes use of the experimental language feature for trait impl specialization. This apperently changes public its APIs in subtle ways such that type inference of some user code can fail where it succeeds when specialization is disabled. This made Mercurial’s Rust unit tests have compilation errors on Nightly. I have not managed to find the exactl root cause, but I wrote down my findings so far at https://github.com/bodil/im-rs/issues/188 This adds type annotation to make unit tests rely less on type inference and work around the issue. Differential Revision: https://phab.mercurial-scm.org/D10742

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__init__.py
35 lines | 873 B | text/x-python | PythonLexer
from __future__ import (
absolute_import,
division,
)
import os
import time
# work around check-code complains
#
# This is a simple log level module doing simple test related work, we can't
# import more things, and we do not need it.
environ = getattr(os, 'environ')
def _timeout_factor():
"""return the current modification to timeout"""
default = int(environ.get('HGTEST_TIMEOUT_DEFAULT', 1))
current = int(environ.get('HGTEST_TIMEOUT', default))
return current / float(default)
def wait_file(path, timeout=10):
timeout *= _timeout_factor()
start = time.time()
while not os.path.exists(path):
if time.time() - start > timeout:
raise RuntimeError(b"timed out waiting for file: %s" % path)
time.sleep(0.01)
def write_file(path, content=b''):
with open(path, 'wb') as f:
f.write(content)