CA-142451: Unit tests

Covering changes related to CA-142451.

Signed-off-by: Flavien Quesnel <flavien.quesnel@citrix.com>

Author: Flavien Quesnel

tests/test_ISCSISR.py

@@ -59,6 +59,33 @@ def __init__(self, extra_dconf=None):
         self.dconf.update(extra_dconf or {})
 
 
+class NonInitingMultiLUNISCSISR(ISCSISR.ISCSISR):
+    def __init__(self, node1, node2):
+        self.mpath = "false"
+        self.dconf = {
+            'target': node1['ip'],
+            'localIQN': 'localIQN',
+            'targetIQN': node1['iqn']
+        }
+
+        self.dconf.update({})
+        self.target = node1['ip']
+        self.port = node1['port']
+        self.targetIQN = node1['iqn']
+        self.attached = True
+        self.multihomed = True
+        extra_adapter = "%s:%d" % (node2['ip'], node2['port'])
+        self.adapter = {
+            extra_adapter: None
+        }
+
+    def _synchroniseAddrList(self, *args, **kwargs):
+        pass
+
+    def _init_adapters(self):
+        pass
+
+
 class TestVdiTypeSetting(TestBase):
 
     @mock.patch('ISCSISR.iscsilib.discovery')
@@ -82,3 +109,68 @@ def test_vdi_type_modified_by_force_tapdisk(self):
         self.load_iscsi_sr(iscsi_sr=iscsi_sr)
 
         self.assertEquals('aio', iscsi_sr.sr_vditype)
+
+
+class TestMultiLUNISCSISR(unittest.TestCase):
+
+    def setUp(self):
+        self.node1 = {
+            'ip': '127.0.0.1',
+            'port': 3260,
+            'iqn': 'IQN'
+        }
+        self.node2 = {
+            'ip': '127.0.0.2',
+            'port': 8080,
+            'iqn': 'IQN',
+            'tpgt': 'TPGT'
+        }
+        self.node_records = [(
+            "%s:%d" % (self.node2['ip'], self.node2['port']),
+            self.node2['tpgt'],
+            self.node2['iqn']
+        )]
+
+    def assertActiveNodeEquals(self, node, iscsi_sr):
+        node_ip_port = "%s:%d" % (node['ip'], node['port'])
+        node_path = '/dev/iscsi/%s/%s' % (node['iqn'], node_ip_port)
+
+        self.assertEquals(node_path, iscsi_sr.path)
+        self.assertEquals(node_ip_port, iscsi_sr.tgtidx)
+        self.assertEquals(node_ip_port, iscsi_sr.address)
+
+    @mock.patch('ISCSISR.os.path.exists')
+    @mock.patch('ISCSISR.iscsilib.get_node_records')
+    def test_initPaths_actual_path_is_active(
+            self,
+            mock_get_node_records,
+            mock_exists):
+        mock_get_node_records.return_value = self.node_records
+        mock_exists.return_value = True
+
+        iscsi_sr = NonInitingMultiLUNISCSISR(self.node1, self.node2)
+
+        iscsi_sr._initPaths()
+
+        self.assertActiveNodeEquals(self.node1, iscsi_sr)
+
+    @mock.patch('ISCSISR.os.path.exists')
+    @mock.patch('ISCSISR.iscsilib.get_node_records')
+    def test_initPaths_active_path_detection(
+            self,
+            mock_get_node_records,
+            mock_exists):
+        mock_get_node_records.return_value = self.node_records
+
+        def fake_exists(path):
+            if self.node1['ip'] in path:
+                return False
+            return True
+
+        mock_exists.side_effect = fake_exists
+
+        iscsi_sr = NonInitingMultiLUNISCSISR(self.node1, self.node2)
+
+        iscsi_sr._initPaths()
+
+        self.assertActiveNodeEquals(self.node2, iscsi_sr)