Add multiple servers test case to TestServerDelete.

This patch adds a multiple servers test case to class TestServerDelete.

Change-Id: I8b0c37ec2a8e7b23889e25c9004f867f2907f630
Implements: blueprint osc-unit-test-framework-improvement

Author: tang-chen

openstackclient/tests/compute/v2/test_server.py

@@ -17,6 +17,7 @@
 import mock
 import testtools
 
+from mock import call
 from openstackclient.common import exceptions
 from openstackclient.common import utils as common_utils
 from openstackclient.compute.v2 import server
@@ -435,6 +436,27 @@ def test_server_delete_no_options(self):
             servers[0].id,
         )
 
+    def test_server_delete_multi_servers(self):
+        servers = self.setup_servers_mock(count=3)
+
+        arglist = []
+        verifylist = []
+
+        for s in servers:
+            arglist.append(s.id)
+        verifylist = [
+            ('server', arglist),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        # DisplayCommandBase.take_action() returns two tuples
+        self.cmd.take_action(parsed_args)
+
+        calls = []
+        for s in servers:
+            calls.append(call(s.id))
+        self.servers_mock.delete.assert_has_calls(calls)
+
     @mock.patch.object(common_utils, 'wait_for_delete', return_value=True)
     def test_server_delete_wait_ok(self, mock_wait_for_delete):
         servers = self.setup_servers_mock(count=1)