comment why its just import statements

Author: rickeylev

tests/whl_with_build_files/verify_files_test.py

@@ -3,7 +3,10 @@
 
 class VerifyFilestest(unittest.TestCase):
 
-    def test_stuff(self):
+    def test_wheel_with_build_files_importable(self):
+        # If the BUILD files are present, then these imports should fail
+        # because globs won't pass package boundaries, and the necessary
+        # py files end up missing in runfiles.
         import somepkg
         import somepkg.a
         import somepkg.subpkg