toaster: eventreplay tests

index 9a4db1e..4f8510c 100644
@@ -1742,7 +1742,7 @@ def invalidate_cache(**kwargs):
 def signal_runbuilds():
     """Send SIGUSR1 to runbuilds process"""
     try:
-        with open(os.path.join(os.getenv('BUILDDIR'),
+        with open(os.path.join(os.getenv('BUILDDIR', '.'),
                                '.runbuilds.pid')) as pidf:
             os.kill(int(pidf.read()), SIGUSR1)
     except FileNotFoundError:

new file mode 100644
index 0000000..792f07d
@@ -0,0 +1,87 @@
+#! /usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# BitBake Toaster Implementation
+#
+# Copyright (C) 2016 Intel Corporation
+#
+# 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.
+
+# Tests were part of openembedded-core oe selftest Authored by: Lucian Musat
+# Ionut Chisanovici, Paul Eggleton and Cristian Iorga
+
+"""
+Test toaster backend by playing build event log files
+using toaster-eventreplay script
+"""
+
+import os
+
+from subprocess import getstatusoutput
+from pathlib import Path
+
+from django.test import TestCase
+
+from orm.models import Target_Installed_Package
+
+class EventReplay(TestCase):
+    """Base class for eventreplay test cases"""
+
+    def setUp(self):
+        """
+        Setup build environment:
+            - set self.script to toaster-eventreplay path
+            - set self.eventplay_dir to the value of EVENTPLAY_DIR env variable
+        """
+        bitbake_dir = Path(__file__.split('lib/toaster')[0])
+        self.script = bitbake_dir /  'bin' / 'toaster-eventreplay'
+        self.assertTrue(self.script.exists(), "%s doesn't exist")
+        self.eventplay_dir = os.getenv("EVENTREPLAY_DIR")
+        self.assertTrue(self.eventplay_dir,
+                        "Environment variable EVENTREPLAY_DIR is not set")
+
+    def _replay(self, eventfile):
+        """Run toaster-eventplay <eventfile>"""
+        eventpath = Path(self.eventplay_dir) / eventfile
+        status, output = getstatusoutput('%s %s' % (self.script, eventpath))
+        if status:
+            print(output)
+
+        self.assertEqual(status, 0)
+
+class CoreImageMinimalEventReplay(EventReplay):
+    """Replay core-image-minimal events"""
+
+    def test_installed_packages(self):
+        """Test if all required packages have been installed"""
+
+        self._replay('core-image-minimal.events')
+
+        # test installed packages
+        packages = sorted(Target_Installed_Package.objects.\
+                          values_list('package__name', flat=True))
+        self.assertEqual(packages, ['base-files', 'base-passwd', 'busybox',
+                                    'busybox-hwclock', 'busybox-syslog',
+                                    'busybox-udhcpc', 'eudev', 'glibc',
+                                    'init-ifupdown', 'initscripts',
+                                    'initscripts-functions', 'kernel-base',
+                                    'kernel-module-uvesafb', 'libkmod',
+                                    'modutils-initscripts', 'netbase',
+                                    'packagegroup-core-boot', 'run-postinsts',
+                                    'sysvinit', 'sysvinit-inittab',
+                                    'sysvinit-pidof', 'udev-cache',
+                                    'update-alternatives-opkg',
+                                    'update-rc.d', 'util-linux-libblkid',
+                                    'util-linux-libuuid', 'v86d', 'zlib'])

index 792f07d..6956619 100644
@@ -34,7 +34,7 @@ from pathlib import Path
 
 from django.test import TestCase
 
-from orm.models import Target_Installed_Package
+from orm.models import Target_Installed_Package, Package, Build
 
 class EventReplay(TestCase):
     """Base class for eventreplay test cases"""

@@ -85,3 +85,13 @@ class CoreImageMinimalEventReplay(EventReplay):
                                     'update-alternatives-opkg',
                                     'update-rc.d', 'util-linux-libblkid',
                                     'util-linux-libuuid', 'v86d', 'zlib'])
+
+class ZlibEventReplay(EventReplay):
+    """Replay zlib events"""
+
+    def test_replay_zlib(self):
+        """Test if zlib build and package are in the database"""
+        self._replay("zlib.events")
+
+        self.assertEqual(Build.objects.last().target_set.last().target, "zlib")
+        self.assertTrue('zlib' in Package.objects.values_list('name', flat=True))

new file mode 100644
index 0000000..8c5bb64
@@ -0,0 +1,22 @@
+# Running eventreplay tests
+
+These tests use event log files produced by bitbake <target> -w <event log file>
+You need to have event log files produced before running this tests.
+
+At the moment of writing this document tests use 2 event log files: zlib.events
+and core-image-minimal.events. They're not provided with the tests due to their
+significant size.
+
+Here is how to produce them:
+
+$ . oe-init-build-env
+$ rm -r tmp sstate-cache
+$ bitbake core-image-minimal -w core-image-minimal.events
+$ rm -rf tmp sstate-cache
+$ bitbake zlib -w zlib.events
+
+After that it should be possible to run eventreplay tests this way:
+
+$ EVENTREPLAY_DIR=./ DJANGO_SETTINGS_MODULE=toastermain.settings_test ../bitbake/lib/toaster/manage.py test -v2 tests.eventreplay
+
+Note that environment variable EVENTREPLAY_DIR should point to the directory with event log files.