Move test ENI creation to test

.github/workflows/e2e.yaml

@@ -29,10 +29,6 @@ jobs:
           sudo ip link set dev eth2 mtu 9001
           sudo ip link set dev eth2 up
           ip link show
-          sudo ip link add vpc-eni-test-1 type dummy
-          sudo ip link add vpc-eni-test-2 type dummy
-          sudo ip link add vpc-eni-test-3 type dummy
-          ip link show
       - name: test
         run: make e2e-test
       - name: upload failed test artifacts

plugins/vpc-eni/e2eTests/e2e_test.go

@@ -98,6 +98,9 @@ func TestAddDel(t *testing.T) {
 			targetNS := createTestTargetNS(t)
 			defer targetNS.Close()
 
+			testENI := createTestENI(t, tc.testENIName)
+			defer deleteTestENI(t, testENI.Attrs().HardwareAddr)
+
 			testENILink, err := netlink.LinkByName(tc.testENIName)
 			require.NoError(t, err, "test ENI not found: "+tc.testENIName)
 			testENIMACAddress := testENILink.Attrs().HardwareAddr
@@ -299,3 +302,30 @@ func requireIPAddresses(t *testing.T, macAddress net.HardwareAddr, expectedAddrs
 		assert.Contains(t, actualAddrs, ip)
 	}
 }
+
+// Creates a test (dummy) ENI
+func createTestENI(t *testing.T, linkName string) netlink.Link {
+	t.Log("Creating test ENI", linkName)
+	la := netlink.NewLinkAttrs()
+	la.Name = linkName
+	err := netlink.LinkAdd(&netlink.Dummy{LinkAttrs: la})
+	require.NoError(t, err, "Failed to create test ENI")
+	link, err := netlink.LinkByName(linkName)
+	require.NoError(t, err, "Failed to find test ENI by name after creation")
+	return link
+}
+
+// Deletes test ENI
+func deleteTestENI(t *testing.T, macAddress net.HardwareAddr) {
+	t.Log("Looking up test ENI with mac address", macAddress)
+	interfaces, err := net.Interfaces()
+	require.NoError(t, err, "Failed to get interfaces")
+	iface := eni.GetInterfaceByMACAddress(macAddress, interfaces)
+	t.Log("Found test ENI for deletion", iface.Name)
+
+	link, err := netlink.LinkByName(iface.Name)
+	require.NoError(t, err, "Failed to find link to delete", iface.Name)
+	err = netlink.LinkDel(link)
+	require.NoError(t, err, "Failed to delete test ENI", iface.Name)
+	t.Log("Deleted test ENI", link.Attrs().Name)
+}