Extract class attribute for the test root. DRY.

Author: jaraco

importlib_metadata/tests/test_zip.py

@@ -15,14 +15,15 @@
 
 
 class TestZip(unittest.TestCase):
+    root = 'importlib_metadata.tests.data'
+
     def setUp(self):
         # Find the path to the example-*.whl so we can add it to the front of
         # sys.path, where we'll then try to find the metadata thereof.
         self.resources = ExitStack()
         self.addCleanup(self.resources.close)
         wheel = self.resources.enter_context(
-            path('importlib_metadata.tests.data',
-                 'example-21.12-py3-none-any.whl'))
+            path(self.root, 'example-21.12-py3-none-any.whl'))
         sys.path.insert(0, str(wheel))
         self.resources.callback(sys.path.pop, 0)
 
@@ -53,8 +54,7 @@ def setUp(self):
         self.resources = ExitStack()
         self.addCleanup(self.resources.close)
         egg = self.resources.enter_context(
-            path('importlib_metadata.tests.data',
-                 'example-21.12-py3.6.egg'))
+            path(self.root, 'example-21.12-py3.6.egg'))
         sys.path.insert(0, str(egg))
         self.resources.callback(sys.path.pop, 0)