diff --git a/tests/unittests/distros/test_ifconfig.py b/tests/unittests/distros/test_ifconfig.py
index f295044598d..205cc16a0d0 100644
--- a/tests/unittests/distros/test_ifconfig.py
+++ b/tests/unittests/distros/test_ifconfig.py
@@ -1,59 +1,71 @@
 # This file is part of cloud-init. See LICENSE file for license information.
+import pytest
 
 from cloudinit.distros.parsers.ifconfig import Ifconfig
-from tests.unittests.helpers import TestCase, readResource
+from tests.unittests.helpers import readResource
 
 
-class TestIfconfigParserFreeBSD(TestCase):
-    def setUp(self):
-        super(TestIfconfigParserFreeBSD, self).setUp()
-        self.ifs_txt = readResource("netinfo/freebsd-ifconfig-output")
+@pytest.fixture
+def ifs_freebsd():
+    return readResource("netinfo/freebsd-ifconfig-output")
 
-    def test_parse_freebsd(self):
+
+@pytest.fixture
+def ifs_freebsd_cidr():
+    return readResource("netinfo/freebsd-ifconfig-cidr-output")
+
+
+@pytest.fixture
+def ifs_openbsd():
+    return readResource("netinfo/openbsd-ifconfig-output")
+
+
+class TestIfconfigParserFreeBSD:
+    def test_parse_freebsd(self, ifs_freebsd):
         """assert parsing works without any exceptions"""
-        Ifconfig().parse(self.ifs_txt)
+        Ifconfig().parse(ifs_freebsd)
 
-    def test_is_bridge(self):
+    def test_is_bridge(self, ifs_freebsd):
         """assert bridge0 is_bridge"""
-        ifs = Ifconfig().parse(self.ifs_txt)
+        ifs = Ifconfig().parse(ifs_freebsd)
         assert ifs["bridge0"].is_bridge
 
-    def test_index(self):
+    def test_index(self, ifs_freebsd):
         """assert vtnet0 index is 1"""
-        ifs = Ifconfig().parse(self.ifs_txt)
+        ifs = Ifconfig().parse(ifs_freebsd)
         assert ifs["vtnet0"].index == 1
 
-    def test_is_vlan(self):
+    def test_is_vlan(self, ifs_freebsd):
         """assert re0.33 is_vlan"""
-        ifs = Ifconfig().parse(self.ifs_txt)
+        ifs = Ifconfig().parse(ifs_freebsd)
         assert ifs["re0.33"].is_vlan
 
-    def test_netmask(self):
-        ifs = Ifconfig().parse(self.ifs_txt)
+    def test_netmask(self, ifs_freebsd):
+        ifs = Ifconfig().parse(ifs_freebsd)
         # netmasks are Normalized from non-contiguous hex bitmasks to
         # contiguous decimal bitmasks
         assert ifs["bridge0"].inet["192.168.1.1"]["netmask"] == "255.255.255.0"
         assert ifs["lo0"].inet["127.0.0.1"]["netmask"] == "255.0.0.0"
 
-    def test_description(self):
+    def test_description(self, ifs_freebsd):
         """assert vnet0:11 is associated with jail: webirc"""
-        ifs = Ifconfig().parse(self.ifs_txt)
+        ifs = Ifconfig().parse(ifs_freebsd)
         assert ifs["vnet0:11"].description == "'associated with jail: webirc'"
 
-    def test_vtnet_options(self):
+    def test_vtnet_options(self, ifs_freebsd):
         """assert vtnet has TXCSUM"""
-        ifs = Ifconfig().parse(self.ifs_txt)
+        ifs = Ifconfig().parse(ifs_freebsd)
         assert "txcsum" in ifs["vtnet0"].options
 
     def test_duplicate_mac(self):
         """
         assert that we can have duplicate macs, and that it's not an accident
         """
-        self.ifs_txt = readResource(
+        ifs_txt = readResource(
             "netinfo/freebsd-duplicate-macs-ifconfig-output"
         )
         ifc = Ifconfig()
-        ifc.parse(self.ifs_txt)
+        ifc.parse(ifs_txt)
         ifs_by_mac = ifc.ifs_by_mac()
         assert len(ifs_by_mac["00:0d:3a:54:ad:1e"]) == 2
         assert (
@@ -62,17 +74,13 @@ def test_duplicate_mac(self):
         )
 
 
-class TestIfconfigParserFreeBSDCIDR(TestCase):
-    def setUp(self):
-        super(TestIfconfigParserFreeBSDCIDR, self).setUp()
-        self.ifs_txt = readResource("netinfo/freebsd-ifconfig-cidr-output")
-
-    def test_parse_freebsd(self):
+class TestIfconfigParserFreeBSDCIDR:
+    def test_parse_freebsd(self, ifs_freebsd_cidr):
         """assert parsing works without any exceptions"""
-        Ifconfig().parse(self.ifs_txt)
+        Ifconfig().parse(ifs_freebsd_cidr)
 
-    def test_netmask(self):
-        ifs = Ifconfig().parse(self.ifs_txt)
+    def test_netmask(self, ifs_freebsd_cidr):
+        ifs = Ifconfig().parse(ifs_freebsd_cidr)
         # netmasks are Normalized from CIDR to contiguous decimal bitmasks
         assert (
             ifs["vtnet0"].inet["198.51.100.13"]["netmask"] == "255.255.255.255"
@@ -80,33 +88,29 @@ def test_netmask(self):
         assert ifs["lo0"].inet["127.0.0.1"]["netmask"] == "255.0.0.0"
 
 
-class TestIfconfigParserOpenBSD(TestCase):
-    def setUp(self):
-        super(TestIfconfigParserOpenBSD, self).setUp()
-        self.ifs_txt = readResource("netinfo/openbsd-ifconfig-output")
-
-    def test_parse_openbsd(self):
+class TestIfconfigParserOpenBSD:
+    def test_parse_openbsd(self, ifs_openbsd):
         """assert parsing works without any exceptions"""
-        Ifconfig().parse(self.ifs_txt)
+        Ifconfig().parse(ifs_openbsd)
 
-    def test_is_not_physical(self):
+    def test_is_not_physical(self, ifs_openbsd):
         """assert enc0 is not physical"""
-        ifs = Ifconfig().parse(self.ifs_txt)
+        ifs = Ifconfig().parse(ifs_openbsd)
         assert not ifs["enc0"].is_physical
 
-    def test_is_physical(self):
-        """assert enc0 is not physical"""
-        ifs = Ifconfig().parse(self.ifs_txt)
+    def test_is_physical(self, ifs_openbsd):
+        """assert vio0 is not physical"""
+        ifs = Ifconfig().parse(ifs_openbsd)
         assert ifs["vio0"].is_physical
 
-    def test_index(self):
+    def test_index(self, ifs_openbsd):
         """assert vio0 index is 1"""
-        ifs = Ifconfig().parse(self.ifs_txt)
+        ifs = Ifconfig().parse(ifs_openbsd)
         assert ifs["vio0"].index == 1
 
-    def test_gif_ipv6(self):
+    def test_gif_ipv6(self, ifs_openbsd):
         """assert that we can parse a gif inet6 address, despite the -->"""
-        ifs = Ifconfig().parse(self.ifs_txt)
+        ifs = Ifconfig().parse(ifs_openbsd)
         assert ifs["gif0"].inet6["fe80::be30:5bff:fed0:471"] == {
             "prefixlen": "64",
             "scope": "link-local",