save coverage database files

Change-Id: Ie0260e2e96978f0c6a2824f3fb2199988091bb23

diff --git a/noxfile.py b/noxfile.py
index 64b4915c20ad9721b3b105b0cdf175493fa15cf7..8ec50f082fece4eadfb3802e7e56b28b25ec7f05 100644 (file)
--- a/noxfile.py
+++ b/noxfile.py
@@ -251,8 +251,10 @@ def _tests(
         assert not platform_intensive
         has_greenlet = "greenlet" if greenlet else "nogreenlet"
 
+        session.env["COVERAGE_FILE"] = f".coverage.{file_suffix}"
         cmd.extend(
             [
+                "--cov-reset",
                 "--cov=sqlalchemy",
                 "--cov-append",
                 "--cov-report",