Replaced start up tests.

release_tests/support/cluster.py

@@ -1,35 +1,55 @@
 """Create a cluster."""
 
 from aiohttp import ClientSession
+from release_tests.support import get_port
 from release_tests.support.mttserver import MTTServer
 from release_tests.support.translate import Translate
 
+ADDR = "127.56.0.1"
+
 
 class Cluster:
     """cluster of MoreThanText."""
 
     def __init__(self, num=2, transurl=None, transreplies=None):
         """initialization"""
+        self.num = num
         self.translate = Translate(url=transurl, replies=transreplies)
         self.session = None
         self.servers = []
-        for _ in range(num):
-            self.servers.append(MTTServer())
 
     async def start(self):
         """Start the cluster."""
         await self.translate.start()
-        for server in self.servers:
+        for _ in range(self.num):
+            port = get_port()
+            server = MTTServer("-a", ADDR, "-p", port)
             await server.start()
+            self.servers.append(server)
+        self.session = ClientSession()
+
+    async def start_a_server(self, *args):
+        """Creates a single server."""
+        self.num = 1
+        server = MTTServer(*args)
+        await server.start()
+        self.servers.append(server)
         self.session = ClientSession()
 
     async def stop(self):
         """Stops cluster."""
-        await self.session.close()
+        if self.session:
+            await self.session.close()
         await self.translate.stop()
         for server in self.servers:
             await server.stop()
 
+    async def cleanup(self):
+        """Cleans up the cluster."""
+        await self.stop()
+        for server in self.servers:
+            await server.cleanup()
+
     async def get(self, url):
         """get from each server in the cluster."""
         replies = []