Add Chromium-only Blender WebEngine parity work

blender-5.2.0/tests/python/modules/test_utils.py

@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+# SPDX-FileCopyrightText: 2018-2022 Blender Authors
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+import functools
+import shutil
+import pathlib
+import subprocess
+import tempfile
+import unittest
+
+
+def with_tempdir(wrapped):
+    """Creates a temporary directory for the function, cleaning up after it returns normally.
+
+    When the wrapped function raises an exception, the contents of the temporary directory
+    remain available for manual inspection.
+
+    The wrapped function is called with an extra positional argument containing
+    the pathlib.Path() of the temporary directory.
+    """
+
+    @functools.wraps(wrapped)
+    def decorator(*args, **kwargs):
+        dirname = tempfile.mkdtemp(prefix='blender-alembic-test')
+        try:
+            retval = wrapped(*args, pathlib.Path(dirname), **kwargs)
+        except:
+            print('Exception in %s, not cleaning up temporary directory %s' % (wrapped, dirname))
+            raise
+        else:
+            shutil.rmtree(dirname)
+        return retval
+
+    return decorator
+
+
+class AbstractBlenderRunnerTest(unittest.TestCase):
+    """Base class for all test suites which needs to run Blender"""
+
+    # Set in a subclass
+    blender: pathlib.Path = None
+    testdir: pathlib.Path = None
+
+    def run_blender(self, filepath: str, python_script: str, timeout: int = 300) -> str:
+        """Runs Blender by opening a blendfile and executing a script.
+
+        Returns Blender's stdout + stderr combined into one string.
+
+        :param filepath: taken relative to self.testdir.
+        :param timeout: in seconds
+        """
+
+        assert self.blender, "Path to Blender binary is to be set in setUpClass()"
+        assert self.testdir, "Path to tests binary is to be set in setUpClass()"
+
+        blendfile = self.testdir / filepath if filepath else ""
+
+        command = [
+            self.blender,
+            '--background',
+            '--factory-startup',
+            '--enable-autoexec',
+            '--debug-memory',
+            '--console-crash-handler',
+            '--debug-exit-on-error',
+        ]
+
+        if blendfile:
+            command.append(str(blendfile))
+
+        command.extend([
+            '--python-exit-code', '47',
+            '--python-expr', python_script,
+        ]
+        )
+
+        proc = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
+                              timeout=timeout)
+        output = proc.stdout.decode('utf8')
+        if proc.returncode:
+            self.fail('Error %d running Blender:\n%s' % (proc.returncode, output))
+
+        return output