Fix unit tests by removing warning checks

tests/integration_tests/network/test_network_creation.py

@@ -22,8 +22,7 @@ def test_readding_node():
     net = Network()
     n1 = Node(hostname="computer")
     net.add_node(n1)
-    with pytest.raises(RuntimeWarning):
-        net.add_node(n1)
+    net.add_node(n1)
     assert n1.parent is net
     assert n1 in net
 
@@ -32,8 +31,7 @@ def test_removing_nonexistent_node():
     """Check that warning is raised when trying to remove a node that is not in the network."""
     net = Network()
     n1 = Node(hostname="computer")
-    with pytest.raises(RuntimeWarning):
-        net.remove_node(n1)
+    net.remove_node(n1)
     assert n1.parent is None
     assert n1 not in net
 
@@ -69,8 +67,7 @@ def test_connecting_node_to_itself():
 
     net.add_node(node)
 
-    with pytest.raises(RuntimeError):
-        net.connect(node.nics[nic1.uuid], node.nics[nic2.uuid], bandwidth=30)
+    net.connect(node.nics[nic1.uuid], node.nics[nic2.uuid], bandwidth=30)
 
     assert node in net
     assert nic1.connected_link is None
@@ -79,4 +76,22 @@ def test_connecting_node_to_itself():
 
 
 def test_disconnecting_nodes():
-    ...
+    net = Network()
+
+    n1 = Node(hostname="computer")
+    n1_nic = NIC(ip_address="120.30.0.1", gateway="192.168.0.1", subnet_mask="255.255.255.0")
+    n1.connect_nic(n1_nic)
+    net.add_node(n1)
+
+    n2 = Node(hostname="server")
+    n2_nic = NIC(ip_address="120.30.0.2", gateway="192.168.0.1", subnet_mask="255.255.255.0")
+    n2.connect_nic(n2_nic)
+    net.add_node(n2)
+
+    net.connect(n1.nics[n1_nic.uuid], n2.nics[n2_nic.uuid], bandwidth=30)
+    assert len(net.links) == 1
+
+    link = list(net.links.values())[0]
+    net.remove_link(link)
+    assert link not in net
+    assert len(net.links) == 0