Take advantage of new helper functions.

src/ZEO/tests/zeo-fan-out.test

@@ -9,41 +9,26 @@ ZEO servers for us and another one that picks ports.
 
 We'll start the first server:
 
-    >>> import ZEO.tests.forker, ZEO.tests.testZEO
-    >>> port0 = ZEO.tests.testZEO.get_port()
-    >>> zconf0 = ZEO.tests.forker.ZEOConfig(('', port0))
-    >>> zport0, adminaddr0, pid0, path0 = ZEO.tests.forker.start_zeo_server(
-    ...    '<filestorage 1>\n  path fs\n</filestorage>\n', zconf0,
-    ...    port0, keep=1)
-
+    >>> (_, port0), adminaddr0 = start_server(
+    ...     '<filestorage>\npath fs\n</filestorage>', keep=1)
 
 Then we'll start 2 others that use this one:
 
-    >>> port1 = ZEO.tests.testZEO.get_port()
-    >>> zconf1 = ZEO.tests.forker.ZEOConfig(('', port1))
-    >>> zport1, adminaddr1, pid1, path1 = ZEO.tests.forker.start_zeo_server(
-    ...    '<zeoclient 1>\n  server %s\n</zeoclient>\n' % port0,
-    ...     zconf1, port1)
-
-    >>> port2 = ZEO.tests.testZEO.get_port()
-    >>> zconf2 = ZEO.tests.forker.ZEOConfig(('', port2))
-    >>> zport2, adminaddr2, pid2, path2 = ZEO.tests.forker.start_zeo_server(
-    ...    '<zeoclient 1>\n  server %s\n</zeoclient>\n' % port0,
-    ...     zconf2, port2)
-
+    >>> addr1, _ = start_server('<zeoclient>\nserver %s\n</zeoclient>' % port0)
+    >>> addr2, _ = start_server('<zeoclient>\nserver %s\n</zeoclient>' % port0)
 
 Now, let's create some client storages that connect to these:
 
     >>> import ZEO, transaction
 
-    >>> db1 = ZEO.DB(('localhost', port1), '1')
+    >>> db1 = ZEO.DB(addr1)
     >>> tm1 = transaction.TransactionManager()
     >>> c1 = db1.open(transaction_manager=tm1)
     >>> r1 = c1.root()
     >>> r1
     {}
 
-    >>> db2 = ZEO.DB(('localhost', port2), '1')
+    >>> db2 = ZEO.DB(addr2)
     >>> tm2 = transaction.TransactionManager()
     >>> c2 = db2.open(transaction_manager=tm2)
     >>> r2 = c2.root()
@@ -99,9 +84,9 @@ Now, let's see if we can break it. :)
 If we shutdown and restart the source server, the variables will be
 invalidated:
 
-    >>> ZEO.tests.forker.shutdown_zeo_server(adminaddr0)
-    >>> zport0, adminaddr0, pid0, path0 = ZEO.tests.forker.start_zeo_server(
-    ...    '<filestorage 1>\n  path fs\n</filestorage>\n', zconf0, port0)
+    >>> stop_server(adminaddr0)
+    >>> _ = start_server('<filestorage 1>\npath fs\n</filestorage>\n',
+    ...                  port=port0)
     
     >>> for i in range(1000):
     ...     c1.sync()
@@ -126,6 +111,3 @@ Cleanup:
 
     >>> db1.close()
     >>> db2.close()
-    >>> ZEO.tests.forker.shutdown_zeo_server(adminaddr2)
-    >>> ZEO.tests.forker.shutdown_zeo_server(adminaddr1)
-    >>> ZEO.tests.forker.shutdown_zeo_server(adminaddr0)