oe-selftest: test wic rawcopy plugin

Added test_rawcopy_plugin_qemu test case and wks template.

This test builds ext4 rootfs image, copies it to the root
partition of the wic image using rawcopy plugin and
boots wic image in qemu.

[YOCTO #10618]

(From OE-Core rev: db1f511228e26aaeeff452427637942747bbf42b)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-selftest/wic/test_rawcopy_plugin.wks.in

@@ -0,0 +1,6 @@
+# short-description: This file is used in oe-selftest wic module to test rawcopy plugin
+
+part /boot --active --source bootimg-pcbios
+part / --source rawcopy --sourceparams="file=core-image-minimal-${MACHINE}.ext4" --use-uuid
+
+bootloader  --timeout=0 --append="console=ttyS0,115200n8"

meta/lib/oeqa/selftest/wic.py

@@ -681,3 +681,19 @@ part /etc --source rootfs --ondisk mmcblk0 --fstype=ext4 --exclude-path bin/ --r
         os.remove(wkspath)
         wicout = glob(self.resultdir + "%s-*direct" % wksname)
         self.assertEqual(0, len(wicout))
+
+    @only_for_arch(['i586', 'i686', 'x86_64'])
+    def test_rawcopy_plugin_qemu(self):
+        """Test rawcopy plugin in qemu"""
+        # build ext4 and wic images
+        for fstype in ("ext4", "wic"):
+            config = 'IMAGE_FSTYPES = "%s"\nWKS_FILE = "test_rawcopy_plugin.wks.in"\n' % fstype
+            self.append_config(config)
+            self.assertEqual(0, bitbake('core-image-minimal').status)
+            self.remove_config(config)
+
+        with runqemu('core-image-minimal', ssh=False, image_fstype='wic') as qemu:
+            cmd = "grep vda. /proc/partitions  |wc -l"
+            status, output = qemu.run_serial(cmd)
+            self.assertEqual(1, status, 'Failed to run command "%s": %s' % (cmd, output))
+            self.assertEqual(output, '2')