tests: Add tests for virtio-rng device handling

Adds XML parsing and qemu commandline tests for the VirtIO RNG device
support.

tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-egd.args

+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -nodefaults -monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 -chardev socket,id=charrng0,host=1.2.3.4,port=1234 -object rng-egd,chardev=charrng0,id=rng0 -device virtio-rng-pci,rng=rng0,bus=pci.0,addr=0x4

tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-egd.xml

+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</currentMemory>
+  <vcpu placement='static' cpuset='1-4,8-20,525'>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>
+    <controller type='usb' index='0'/>
+    <memballoon model='virtio'/>
+    <rng model='virtio'>
+      <backend model='egd' type='tcp'>
+        <source mode='connect' host='1.2.3.4' service='1234'/>
+        <protocol type='raw'/>
+      </backend>
+    </rng>
+  </devices>
+</domain>

tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-random.args

+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -nodefaults -monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 -object rng-random,id=rng0,filename=/test/phile -device virtio-rng-pci,rng=rng0,bus=pci.0,addr=0x4

tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-random.xml

+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</currentMemory>
+  <vcpu placement='static' cpuset='1-4,8-20,525'>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>
+    <controller type='usb' index='0'/>
+    <memballoon model='virtio'/>
+    <rng model='virtio'>
+      <backend model='random'>/test/phile</backend>
+    </rng>
+  </devices>
+</domain>

tests/qemuxml2argvtest.c

@@ -882,6 +882,11 @@ mymain(void)
             QEMU_CAPS_DEVICE, QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
             QEMU_CAPS_DEVICE_QXL, QEMU_CAPS_DEVICE_QXL_VGA);
 
+    DO_TEST("virtio-rng-random", QEMU_CAPS_DEVICE, QEMU_CAPS_DEVICE_VIRTIO_RNG,
+            QEMU_CAPS_OBJECT_RNG_RANDOM);
+    DO_TEST("virtio-rng-egd", QEMU_CAPS_DEVICE, QEMU_CAPS_DEVICE_VIRTIO_RNG,
+            QEMU_CAPS_OBJECT_RNG_EGD);
+
     virObjectUnref(driver.config);
     virObjectUnref(driver.caps);
     VIR_FREE(map);

tests/qemuxml2xmltest.c

@@ -242,6 +242,9 @@ mymain(void)
 
     DO_TEST("disk-scsi-disk-vpd");
 
+    DO_TEST("virtio-rng-random");
+    DO_TEST("virtio-rng-egd");
+
     /* These tests generate different XML */
     DO_TEST_DIFFERENT("balloon-device-auto");
     DO_TEST_DIFFERENT("channel-virtio-auto");