From: Michal Privoznik <mprivozn@redhat.com>

While our qemuhotplugtest already does a PCI hotplug and unlpug
("hostdev-pci") there is another way to hotplug a PCI device,
esp. if it's a NIC: <interface type='hostdev'/>. This has been
missing and as shown in v12.1.0-rc1-4-gfe782ed334 can be
potentially dangerous as some different paths are taken.
Introduce a test case for interface-hostdev.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
---
 tests/qemuhotplugtest.c                       |  7 ++-
 .../qemuhotplug-interface-hostdev.xml         |  6 ++
 ...emuhotplug-base-live+interface-hostdev.xml | 63 +++++++++++++++++++
 3 files changed, 75 insertions(+), 1 deletion(-)
 create mode 100644 tests/qemuhotplugtestdevices/qemuhotplug-interface-hostdev.xml
 create mode 100644 tests/qemuhotplugtestdomains/qemuhotplug-base-live+interface-hostdev.xml

diff --git a/tests/qemuhotplugtest.c b/tests/qemuhotplugtest.c
index 58413b6e0d..3367804ed0 100644
--- a/tests/qemuhotplugtest.c
+++ b/tests/qemuhotplugtest.c
@@ -697,6 +697,10 @@ mymain(void)
     DO_TEST_DETACH("ppc64", "pseries-base-live", "hostdev-pci", false, false,
                    "device_del", QMP_DEVICE_DELETED("hostdev0") QMP_OK);
 
+    DO_TEST_ATTACH("x86_64", "base-live", "interface-hostdev", false, true,
+                   "device_add", QMP_OK);
+    DO_TEST_DETACH("x86_64", "base-live", "interface-hostdev", false, false,
+                   "device_del", QMP_DEVICE_DELETED("hostdev0") QMP_OK);
     DO_TEST_ATTACH("x86_64", "base-live", "interface-vdpa", false, true,
                    "query-fdsets", "{\"return\":[{\"fdset-id\":99999}]}",
                    "add-fd", "{ \"return\": { \"fdset-id\": 1, \"fd\": 95 }}",
@@ -803,4 +807,5 @@ VIR_TEST_MAIN_PRELOAD(mymain,
                       VIR_TEST_MOCK("virpci"),
                       VIR_TEST_MOCK("domaincaps"),
                       VIR_TEST_MOCK("virprocess"),
-                      VIR_TEST_MOCK("qemuhotplug"));
+                      VIR_TEST_MOCK("qemuhotplug"),
+                      VIR_TEST_MOCK("virnetdev"));
diff --git a/tests/qemuhotplugtestdevices/qemuhotplug-interface-hostdev.xml b/tests/qemuhotplugtestdevices/qemuhotplug-interface-hostdev.xml
new file mode 100644
index 0000000000..0eb7a1df1a
--- /dev/null
+++ b/tests/qemuhotplugtestdevices/qemuhotplug-interface-hostdev.xml
@@ -0,0 +1,6 @@
+<interface type='hostdev' managed='yes'>
+  <source>
+    <address type='pci' domain='0x0000' bus='0x06' slot='0x12' function='0x2'/>
+  </source>
+  <mac address='52:54:00:6d:90:02'/>
+</interface>
diff --git a/tests/qemuhotplugtestdomains/qemuhotplug-base-live+interface-hostdev.xml b/tests/qemuhotplugtestdomains/qemuhotplug-base-live+interface-hostdev.xml
new file mode 100644
index 0000000000..13288f7711
--- /dev/null
+++ b/tests/qemuhotplugtestdomains/qemuhotplug-base-live+interface-hostdev.xml
@@ -0,0 +1,63 @@
+<domain type='kvm' id='7'>
+  <name>hotplug</name>
+  <uuid>d091ea82-29e6-2e34-3005-f02617b36e87</uuid>
+  <memory unit='KiB'>4194304</memory>
+  <currentMemory unit='KiB'>4194304</currentMemory>
+  <vcpu placement='static'>4</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+    <pae/>
+  </features>
+  <cpu mode='custom' match='exact' check='none'>
+    <model fallback='forbid'>qemu64</model>
+  </cpu>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>restart</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <controller type='usb' index='0' model='piix3-uhci'>
+      <alias name='usb'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='ide' index='0'>
+      <alias name='ide'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+    </controller>
+    <controller type='scsi' index='0' model='virtio-scsi'>
+      <alias name='scsi0'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'>
+      <alias name='pci'/>
+    </controller>
+    <controller type='virtio-serial' index='0'>
+      <alias name='virtio-serial0'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </controller>
+    <interface type='hostdev' managed='yes'>
+      <mac address='52:54:00:6d:90:02'/>
+      <driver name='vfio'/>
+      <source>
+        <address type='pci' domain='0x0000' bus='0x06' slot='0x12' function='0x2'/>
+      </source>
+      <alias name='hostdev0'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </interface>
+    <input type='mouse' bus='ps2'>
+      <alias name='input0'/>
+    </input>
+    <input type='keyboard' bus='ps2'>
+      <alias name='input1'/>
+    </input>
+    <audio id='1' type='none'/>
+    <memballoon model='none'/>
+  </devices>
+  <seclabel type='none' model='none'/>
+</domain>
-- 
2.52.0