Fixed bug #190884: Wrong reference to `POSKeyError` caused NameError.

NEWS.txt

@@ -33,6 +33,8 @@ General
 ZEO
 ---
 
+- (???) Fixed bug #190884: Wrong reference to `POSKeyError` caused NameError.
+
 - (???) Fixed bug in transaction buffer: a tuple was unpacked incorrectly in
   `clear`.
 

src/ZEO/ClientStorage.py

@@ -973,7 +973,7 @@ class ClientStorage(object):
         if self.shared_blob_dir:
             # We're using a server shared cache.  If the file isn't
             # here, it's not anywhere.
-            raise POSKeyError("No blob file", oid, serial)
+            raise POSException.POSKeyError("No blob file", oid, serial)
 
         # First, we'll create the directory for this oid, if it doesn't exist. 
         targetpath = self.fshelper.getPathForOID(oid)
@@ -1028,11 +1028,10 @@ class ClientStorage(object):
                 return blob_filename
 
             # Ask the server to send it to us.  When this function
-            # returns, it will have been sent. (The recieving will
+            # returns, it will have been sent. (The receiving will
             # have been handled by the asyncore thread.)
 
             self._server.sendBlob(oid, serial)
-
             if self._have_blob(blob_filename, oid, serial):
                 return blob_filename
 

src/ZEO/tests/testZEO.py

@@ -678,6 +678,11 @@ class BlobWritableCacheTests(GenericTests, CommonBlobTests):
         self.shared_blob_dir = True
         super(BlobWritableCacheTests, self).setUp()
 
+    def checkLoadNonExistingBlob(self):
+        # Regression test for #189542
+        self.assertRaises(ZODB.POSException.POSKeyError,
+                          self._storage.loadBlob, 'foo', 'foo')
+
 
 class StorageServerClientWrapper: