86 lines
2.5 KiB
Python
Executable File
86 lines
2.5 KiB
Python
Executable File
#!/usr/bin/env python3
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# SPDX-FileCopyrightText: 2018-2022 Blender Authors
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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import functools
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import shutil
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import pathlib
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import subprocess
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import tempfile
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import unittest
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def with_tempdir(wrapped):
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"""Creates a temporary directory for the function, cleaning up after it returns normally.
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When the wrapped function raises an exception, the contents of the temporary directory
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remain available for manual inspection.
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The wrapped function is called with an extra positional argument containing
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the pathlib.Path() of the temporary directory.
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"""
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@functools.wraps(wrapped)
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def decorator(*args, **kwargs):
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dirname = tempfile.mkdtemp(prefix='blender-alembic-test')
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try:
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retval = wrapped(*args, pathlib.Path(dirname), **kwargs)
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except:
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print('Exception in %s, not cleaning up temporary directory %s' % (wrapped, dirname))
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raise
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else:
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shutil.rmtree(dirname)
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return retval
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return decorator
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class AbstractBlenderRunnerTest(unittest.TestCase):
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"""Base class for all test suites which needs to run Blender"""
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# Set in a subclass
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blender: pathlib.Path = None
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testdir: pathlib.Path = None
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def run_blender(self, filepath: str, python_script: str, timeout: int = 300) -> str:
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"""Runs Blender by opening a blendfile and executing a script.
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Returns Blender's stdout + stderr combined into one string.
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:arg filepath: taken relative to self.testdir.
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:arg timeout: in seconds
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"""
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assert self.blender, "Path to Blender binary is to be set in setUpClass()"
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assert self.testdir, "Path to tests binary is to be set in setUpClass()"
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blendfile = self.testdir / filepath if filepath else ""
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command = [
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self.blender,
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'--background',
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'-noaudio',
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'--factory-startup',
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'--enable-autoexec',
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'--debug-memory',
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'--debug-exit-on-error',
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]
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if blendfile:
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command.append(str(blendfile))
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command.extend([
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'--python-exit-code', '47',
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'--python-expr', python_script,
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]
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)
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proc = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
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timeout=timeout)
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output = proc.stdout.decode('utf8')
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if proc.returncode:
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self.fail('Error %d running Blender:\n%s' % (proc.returncode, output))
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return output
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