Tests for fallback should open the server with wait=1. (This didn't

work previously, but the combination of wait=1 and fallback mode now
works correctly -- it waits until connected.)

This prevents spurious ClientDisconnected exceptions.

src/ZEO/tests/testZEO.py

@@ -383,7 +383,7 @@ class ConnectionTests(StorageTestBase.StorageTestBase):
         # Start a read-only server
         self._startServer(create=0, index=0, read_only=1)
         # Start a read-only-fallback client
-        self._storage = self.openClientStorage(wait=0, read_only_fallback=1)
+        self._storage = self.openClientStorage(wait=1, read_only_fallback=1)
         # Stores should fail here
         self.assertRaises(ReadOnlyError, self._dostore)
 
@@ -398,7 +398,7 @@ class ConnectionTests(StorageTestBase.StorageTestBase):
         # Start a read-only server
         self._startServer(create=0, index=0, ro_svr=1)
         # Start a read-only-fallback client
-        self._storage = self.openClientStorage(wait=0, read_only_fallback=1)
+        self._storage = self.openClientStorage(wait=1, read_only_fallback=1)
         # Stores should fail here
         self.assertRaises(ReadOnlyError, self._dostore)
 
@@ -492,9 +492,7 @@ class ConnectionTests(StorageTestBase.StorageTestBase):
         # Start a read-only server
         self._startServer(create=0, read_only=1)
         # Start a client in fallback mode
-        self._storage = self.openClientStorage(wait=0, read_only_fallback=1)
-        # Poll until the client is connected
-        self.pollUp()
+        self._storage = self.openClientStorage(wait=1, read_only_fallback=1)
         # Stores should fail here
         self.assertRaises(ReadOnlyError, self._dostore)