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community.general/test/runner/importer.py

120 lines
3.9 KiB
Python
Executable file

#!/usr/bin/env python
"""Import the given python module(s) and report error(s) encountered."""
from __future__ import absolute_import, print_function
import contextlib
import imp
import os
import re
import sys
import traceback
try:
from StringIO import StringIO
except ImportError:
from io import StringIO
def main():
"""Main program function."""
base_dir = os.getcwd()
messages = set()
for path in sys.argv[1:]:
capture = Capture()
try:
with open(path, 'r') as module_fd:
with capture_output(capture):
imp.load_module('module_import_test', module_fd, os.path.abspath(path), ('.py', 'r', imp.PY_SOURCE))
capture_report(path, capture, messages)
except BaseException as ex: # pylint: disable=locally-disabled, broad-except
capture_report(path, capture, messages)
exc_type, _, exc_tb = sys.exc_info()
message = str(ex)
results = list(reversed(traceback.extract_tb(exc_tb)))
source = None
line = 0
offset = 0
for result in results:
if result[0].startswith(base_dir):
source = result[0][len(base_dir) + 1:].replace('test/runner/import/', '')
line = result[1] or 0
break
if not source:
# If none of our source files are found in the traceback, report the file we were testing.
# I haven't been able to come up with a test case that encounters this issue yet.
source = path
message += ' (in %s:%d)' % (results[-1][0], results[-1][1] or 0)
elif isinstance(ex, SyntaxError):
if ex.filename.endswith(path): # pylint: disable=locally-disabled, no-member
# A SyntaxError in the source we're importing will have the correct path, line and offset.
# However, the traceback will report the path to this importer.py script instead.
# We'll use the details from the SyntaxError in this case, as it's more accurate.
source = path
line = ex.lineno or 0 # pylint: disable=locally-disabled, no-member
offset = ex.offset or 0 # pylint: disable=locally-disabled, no-member
message = str(ex)
# Hack to remove the filename and line number from the message, if present.
message = message.replace(' (%s, line %d)' % (os.path.basename(path), line), '')
message = re.sub(r'\n *', ': ', message)
error = '%s:%d:%d: %s: %s' % (source, line, offset, exc_type.__name__, message)
if error not in messages:
messages.add(error)
print(error)
if messages:
exit(10)
class Capture(object):
"""Captured output and/or exception."""
def __init__(self):
self.stdout = StringIO()
self.stderr = StringIO()
def capture_report(path, capture, messages):
"""Report on captured output.
:type path: str
:type capture: Capture
:type messages: set[str]
"""
if capture.stdout.getvalue():
message = '%s:%d:%d: %s: %s' % (path, 0, 0, 'Output', 'Import resulted in output to stdout.')
messages.add(message)
print(message)
if capture.stderr.getvalue():
message = '%s:%d:%d: %s: %s' % (path, 0, 0, 'Output', 'Import resulted in output to stderr.')
messages.add(message)
print(message)
@contextlib.contextmanager
def capture_output(capture):
"""Capture sys.stdout and sys.stderr.
:type capture: Capture
"""
old_stdout = sys.stdout
old_stderr = sys.stderr
sys.stdout = capture.stdout
sys.stderr = capture.stderr
try:
yield
finally:
sys.stdout = old_stdout
sys.stderr = old_stderr
if __name__ == '__main__':
main()