wic tests: Add functional tests for directdisk

Added 2 simple functional test cases to check if
wic is able to produce images using directdisk.wks

(From OE-Core rev: 7f33777ba5ffe9108309b6e3c3801b711adda4a0)

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

scripts/setup.cfg

@@ -3,4 +3,4 @@ verbosity=2
 exe=1
 with-coverage=1
 cover-erase=1
-cover-package=wic,image
+cover-package=wic,image,wic.imager

scripts/tests/02_wic_test_directdisk.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# Copyright (c) 2015, Intel Corporation.
+# All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# AUTHORS
+# Ed Bartosh <ed.bartosh@linux.intel.com>
+
+"""Test directdisk builds."""
+
+import imp
+import unittest
+import os
+import shutil
+import glob
+
+class TestWicDirectdisk(unittest.TestCase):
+    """Test build of directdisk image"""
+    def __init__(self, methodName='runTest'):
+        unittest.TestCase.__init__(self, methodName)
+        self.main = imp.load_source("wic", "wic").main
+        self.resultdir = "/var/tmp/wic/build/"
+
+    def setUp(self):
+        """This code executes before each test method."""
+        shutil.rmtree(self.resultdir)
+        os.chdir(os.getenv("BUILDDIR"))
+
+    def _build(self, cmdline):
+        """Call self.main with provided commandline."""
+        self.assertIsNone(self.main(cmdline))
+        self.assertEqual(1, len(glob.glob(self.resultdir + \
+                                "directdisk-*.direct")))
+
+    def testbuild_image_name(self):
+        self._build(["create", "directdisk",
+                     "--image-name", "core-image-minimal"])
+
+    def testbuild_artifacts(self):
+        self._build(["create", "directdisk",
+                     "-b", "tmp/sysroots/qemux86/usr/share",
+                     "-k", "tmp/deploy/images/qemux86",
+                     "-n", "tmp/sysroots/x86_64-linux",
+                     "-r", "tmp/work/qemux86-poky-linux/"
+                           "core-image-minimal/1.0-r0/rootfs"])
+