tests: add a test for multi function PCI device

tests/qemuxml2argvdata/qemuxml2argv-multifunction-pci-device.args

+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M \
+pc -m 214 -smp 1 -nographic -nodefconfig -nodefaults \
+-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c \
+-device lsi,id=scsi0,bus=pci.0,multifunction=on,addr=0x3.0x0 \
+-device lsi,id=scsi1,bus=pci.0,multifunction=on,addr=0x4.0x0 \
+-device lsi,id=scsi2,bus=pci.0,multifunction=on,addr=0x4.0x1 \
+-device lsi,id=scsi3,bus=pci.0,multifunction=on,addr=0x4.0x2 \
+-device lsi,id=scsi4,bus=pci.0,multifunction=on,addr=0x4.0x3 \
+-device lsi,id=scsi5,bus=pci.0,multifunction=on,addr=0x4.0x4 \
+-device lsi,id=scsi6,bus=pci.0,multifunction=on,addr=0x4.0x5 \
+-device lsi,id=scsi7,bus=pci.0,multifunction=on,addr=0x4.0x6 \
+-device lsi,id=scsi8,bus=pci.0,multifunction=on,addr=0x4.0x7 \
+-drive file=/tmp/scsidisk.img,if=none,id=drive-scsi0-0-0 \
+-device scsi-disk,bus=scsi0.0,scsi-id=0,drive=drive-scsi0-0-0,id=scsi0-0-0 \
+-usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,multifunction=on,addr=0x5.0x0

tests/qemuxml2argvdata/qemuxml2argv-multifunction-pci-device.xml

+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory>219136</memory>
+  <currentMemory>219136</currentMemory>
+  <vcpu>1</vcpu>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu</emulator>
+    <disk type='file' device='disk'>
+      <source file='/tmp/scsidisk.img'/>
+      <target dev='sda' bus='scsi'/>
+      <address type='drive' controller='0' bus='0' unit='0'/>
+    </disk>
+    <controller type='scsi' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </controller>
+    <controller type='scsi' index='1'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </controller>
+    <controller type='scsi' index='2'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x1'/>
+    </controller>
+    <controller type='scsi' index='3'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x2'/>
+    </controller>
+    <controller type='scsi' index='4'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x3'/>
+    </controller>
+    <controller type='scsi' index='5'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x4'/>
+    </controller>
+    <controller type='scsi' index='6'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x5'/>
+    </controller>
+    <controller type='scsi' index='7'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x6'/>
+    </controller>
+    <controller type='scsi' index='8'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x7'/>
+    </controller>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>

tests/qemuxml2argvtest.c

@@ -503,6 +503,10 @@ mymain(void)
     DO_TEST("blkiotune", false, QEMU_CAPS_NAME);
     DO_TEST("cputune", false, QEMU_CAPS_NAME);
 
+    DO_TEST("multifunction-pci-device", false,
+            QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG,
+            QEMU_CAPS_PCI_MULTIFUNCTION);
+
     free(driver.stateDir);
     virCapabilitiesFree(driver.caps);
     free(map);