xlconfigtest: add test for USB config conversion

Signed-off-by: NChunyan Liu <cyliu@suse.com>
Signed-off-by: NJim Fehlig <jfehlig@suse.com>

tests/xlconfigdata/test-usb.cfg

+name = "XenGuest1"
+uuid = "45b60f51-88a9-47a8-a3b3-5e66d71b2283"
+maxmem = 512
+memory = 512
+vcpus = 1
+localtime = 0
+on_poweroff = "preserve"
+on_reboot = "restart"
+on_crash = "preserve"
+vif = [ "mac=5a:36:0e:be:00:09" ]
+bootloader = "/usr/bin/pygrub"
+disk = [ "format=qcow2,vdev=xvda,access=rw,backendtype=qdisk,target=/var/lib/xen/images/debian/disk.qcow2" ]
+usbdev = [ "hostbus=1,hostaddr=3" ]

tests/xlconfigdata/test-usb.xml

+<domain type='xen'>
+  <name>XenGuest1</name>
+  <uuid>45b60f51-88a9-47a8-a3b3-5e66d71b2283</uuid>
+  <memory unit='KiB'>524288</memory>
+  <currentMemory unit='KiB'>524288</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <bootloader>/usr/bin/pygrub</bootloader>
+  <os>
+    <type arch='x86_64' machine='xenpv'>linux</type>
+  </os>
+  <clock offset='utc' adjustment='reset'/>
+  <on_poweroff>preserve</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>preserve</on_crash>
+  <devices>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/xen/images/debian/disk.qcow2'/>
+      <target dev='xvda' bus='xen'/>
+    </disk>
+    <interface type='ethernet'>
+      <mac address='5a:36:0e:be:00:09'/>
+    </interface>
+    <console type='pty'>
+      <target type='xen' port='0'/>
+    </console>
+    <input type='mouse' bus='xen'/>
+    <input type='keyboard' bus='xen'/>
+    <hostdev mode='subsystem' type='usb' managed='no'>
+      <source>
+        <address bus='1' device='3'/>
+      </source>
+    </hostdev>
+  </devices>
+</domain>

tests/xlconfigtest.c

@@ -277,6 +277,7 @@ mymain(void)
     DO_TEST_FORMAT("fullvirt-direct-kernel-boot-bogus-extra", false);
 #endif
     DO_TEST("vif-typename");
+    DO_TEST("usb");
 
     virObjectUnref(caps);
     virObjectUnref(xmlopt);