process: keep the original run.log when a re-run renders nothing; dispatch input to override the voice URL (testing); drop netcheck

_pipeline/tests/test_process.py

@@ -117,6 +117,7 @@ class ProcessTests(unittest.TestCase):
                     "book.json", "warnings.log", "LICENSE_STATUS.md"):
             self.assertTrue(os.path.exists(os.path.join(b, rel)), rel)
         self.assertIn("public domain", open(os.path.join(b, "LICENSE_STATUS.md")).read())
+        log_before = open(os.path.join(b, "audio", "run.log")).read()
         mtimes = {n: os.path.getmtime(os.path.join(b, "audio", n)) for n in names if n.endswith(".mp3")}
         posts = len(Stub.posts)
         self.assertGreater(posts, 0)
@@ -125,6 +126,7 @@ class ProcessTests(unittest.TestCase):
         self.assertEqual(rc, 0, out)
         self.assertEqual(len(Stub.posts), posts)
         self.assertIn("nothing to render", out)
+        self.assertEqual(log_before, open(os.path.join(b, "audio", "run.log")).read())   # original render log kept
         self.assertEqual(mtimes, {n: os.path.getmtime(os.path.join(b, "audio", n)) for n in mtimes})
         rc, out = run_process(self.cfg, self.pdf, force=True)     # forced: renders again
         self.assertEqual(rc, 0, out)