tests: move __init__ to common

Treat tests as a directory full of modules, rather than as a package.
This will allow us to stop adding the root of the repo to the Python path.

Signed-off-by: Benjamin Gilbert <bgilbert@cs.cmu.edu>

Author: bgilbert

tests/__init__.py tests/common.pytests/__init__.py renamed to tests/common.py

@@ -19,9 +19,9 @@
 
 import unittest
 
-from openslide import ImageSlide, OpenSlide, open_slide
+from common import file_path
 
-from . import file_path
+from openslide import ImageSlide, OpenSlide, open_slide
 
 
 class TestLibrary(unittest.TestCase):

tests/test_base.py

@@ -19,11 +19,11 @@
 
 import unittest
 
+from common import file_path
+
 from openslide import ImageSlide, OpenSlide
 from openslide.deepzoom import DeepZoomGenerator
 
-from . import file_path
-
 
 class _BoxesDeepZoomTest:
     def setUp(self):

tests/test_deepzoom.py

@@ -20,11 +20,10 @@
 import unittest
 
 from PIL import Image
+from common import file_path, maybe_supported
 
 from openslide import ImageSlide, OpenSlideCache, OpenSlideError
 
-from . import file_path, maybe_supported
-
 
 class TestImageWithoutOpening(unittest.TestCase):
     def test_detect_format(self):

tests/test_imageslide.py

@@ -23,6 +23,7 @@
 import unittest
 
 from PIL import Image
+from common import file_path, maybe_supported
 
 from openslide import (
     OpenSlide,
@@ -31,8 +32,6 @@
     OpenSlideUnsupportedFormatError,
 )
 
-from . import file_path, maybe_supported
-
 
 class TestCache(unittest.TestCase):
     @maybe_supported