add prefix for files produced by pg_dump

Author: funbringer

testgres/consts.py

@@ -6,6 +6,7 @@
 
 # prefixes for temp dirs
 TMP_NODE = 'tgsn_'
+TMP_DUMP = 'tgsd_'
 TMP_CACHE = 'tgsc_'
 TMP_BACKUP = 'tgsb_'
 

testgres/node.py

@@ -24,6 +24,7 @@
     DATA_DIR, \
     LOGS_DIR, \
     TMP_NODE, \
+    TMP_DUMP, \
     PG_CONF_FILE, \
     PG_AUTO_CONF_FILE, \
     HBA_CONF_FILE, \
@@ -717,7 +718,7 @@ def dump(self, filename=None, dbname=None, username=None):
         """
 
         def tmpfile():
-            fd, fname = tempfile.mkstemp()
+            fd, fname = tempfile.mkstemp(prefix=TMP_DUMP)
             os.close(fd)
             return fname