Add "openssh" runroot method

Merges: https://pagure.io/pungi/pull-request/1166
Signed-off-by: Jan Kaluza <jkaluza@redhat.com>

tests/test_runroot.py

@@ -0,0 +1,52 @@
+# -*- coding: utf-8 -*-
+
+import mock
+import os
+import sys
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
+
+from pungi.runroot import Runroot
+from tests import helpers
+
+
+class TestRunrootOpenSSH(helpers.PungiTestCase):
+    def setUp(self):
+        super(TestRunrootOpenSSH, self).setUp()
+        self.compose = helpers.DummyCompose(self.topdir, {
+            "runroot": True,
+            "runroot_method": "openssh",
+            "runroot_ssh_user": "root",
+            "runroot_ssh_hostnames": {
+                "x86_64": "localhost"
+            }
+        })
+
+        self.runroot = Runroot(self.compose)
+
+    def test_get_runroot_method(self):
+        method = self.runroot.get_runroot_method()
+        self.assertEqual(method, "openssh")
+
+    @mock.patch("pungi.runroot.run")
+    def test_run(self, run):
+        self.runroot.run("df -h", log_file="/foo/runroot.log", arch="x86_64")
+        run.assert_has_calls([
+            mock.call(
+                ['ssh', '-oBatchMode=yes', '-n', '-l', 'root', 'localhost',
+                 'df -h'], logfile='/foo/runroot.log', show_cmd=True),
+            mock.call(
+                ['ssh', '-oBatchMode=yes', '-n', '-l', 'root', 'localhost',
+                 "rpm -qa --qf='%{name}-%{version}-%{release}.%{arch}\n'"],
+                show_cmd=True)
+        ])
+
+    @mock.patch("pungi.runroot.run")
+    def test_get_buildroot_rpms(self, run):
+        # Run the runroot task at first.
+        run.return_value = (0, "foo-1-1.fc29.noarch\nbar-1-1.fc29.noarch\n")
+        self.runroot.run("df -h", log_file="/foo/runroot.log", arch="x86_64")
+
+        rpms = self.runroot.get_buildroot_rpms()
+        self.assertEqual(
+            set(rpms), set(["foo-1-1.fc29.noarch", "bar-1-1.fc29.noarch"]))