clamav runtime: add resolve.conf support

and ping test too

Signed-off-by: Armin Kuster <akuster808@gmail.com>

lib/oeqa/runtime/cases/clamav.py

@@ -1,6 +1,7 @@
 # Copyright (C) 2019 Armin Kuster <akuster808@gmail.com>
 #
 import re
+from tempfile import mkstemp
 
 from oeqa.runtime.case import OERuntimeTestCase
 from oeqa.core.decorator.depends import OETestDepends
@@ -9,6 +10,20 @@ from oeqa.runtime.decorator.package import OEHasPackage
 
 class ClamavTest(OERuntimeTestCase):
 
+    @classmethod
+    def setUpClass(cls):
+        cls.tmp_fd, cls.tmp_path = mkstemp()
+        with os.fdopen(cls.tmp_fd, 'w') as f:
+            # use gooled public dns
+            f.write("nameserver 8.8.8.8")
+            f.write(os.linesep)
+            f.write("nameserver 8.8.4.4")
+            f.write(os.linesep)
+
+    @classmethod
+    def tearDownClass(cls):
+        os.remove(cls.tmp_path)
+
     @OEHasPackage(['clamav'])
     @OETestDepends(['ssh.SSHTest.test_ssh'])
     def test_freshclam_help(self):
@@ -18,6 +33,19 @@ class ClamavTest(OERuntimeTestCase):
         self.assertEqual(status, 0, msg = msg)
 
     @OETestDepends(['clamav.ClamavTest.test_freshclam_help'])
+    @OEHasPackage(['openssh-scp', 'dropbear'])
+    def test_ping_clamav_net(self):
+        dst = '/etc/resolv.conf'
+        self.tc.target.run('rm -f %s' % dst)
+        (status, output) = self.tc.target.copyTo(self.tmp_path, dst)
+        msg = 'File could not be copied. Output: %s' % output
+        self.assertEqual(status, 0, msg=msg)
+
+        status, output = self.target.run('ping -c 1 database.clamav.net')
+        msg = ('ping database.clamav.net failed: output is:\n%s' % output)
+        self.assertEqual(status, 0, msg = msg)
+
+    @OETestDepends(['clamav.ClamavTest.test_ping_clamav_net'])
     def test_freshclam_download(self):
         status, output = self.target.run('freshclam --show-progress')
         match = re.search('Database updated', output)