linux: fix get_systemd_version not parsing raw type correctly

The newly added test of get_systemd_status failed for old systemd with

	>       assert status['systemd-resolved.service']["type"] == ''
	E       assert '"' == ''
	E         + "

	tests/test_linux.py:36: AssertionError

so refactor parsing of path_and_id to fix that.

Signed-off-by: Adam Trhon <adam.trhon@tbs-biometrics.com>

Author: adam-trhon

tests/test_linux.py

@@ -1,8 +1,36 @@
 from labgridhelper import linux
+import pytest
 
 def test_get_systemd_version(command, monkeypatch):
     systemd_version = 'systemd 249 (249.5-2-arch)\n+PAM +AUDIT -SELINUX\n'
 
     monkeypatch.setattr(command, 'run_check', lambda cmd: [systemd_version])
 
     assert linux.get_systemd_version(command) == 249
+
+@pytest.mark.parametrize("systemd_version", [230, 240])
+def test_get_systemd_status(command, monkeypatch, systemd_version):
+    monkeypatch.setattr(linux, 'get_systemd_version', lambda cmd: systemd_version)
+
+    status = {
+        230: 'a(ssssssouso) 1 "systemd-resolved.service" "Network Name Resolution" "loaded" "active"' + \
+            ' "running" "" "/org/freedesktop/systemd1/unit/systemd_2dresolved_2eservice" 0 "" "/"',
+        240: '{"type":"a(ssssssouso)","data":[[["systemd-resolved.service",' + \
+            '"Network Name Resolution","loaded","active","running","",' + \
+            '"/org/freedesktop/systemd1/unit/systemd_2dresolved_2eservice",0,"","/"]]]}',
+    }
+
+    monkeypatch.setattr(command, 'run_check', lambda cmd: [status[systemd_version]])
+
+    status = linux.get_systemd_status(command)
+
+    assert len(status.keys()) == 1
+    assert status['systemd-resolved.service']["description"] == 'Network Name Resolution'
+    assert status['systemd-resolved.service']["load"] == 'loaded'
+    assert status['systemd-resolved.service']["active"] == 'active'
+    assert status['systemd-resolved.service']["sub"] == 'running'
+    assert status['systemd-resolved.service']["follow"] == ''
+    assert status['systemd-resolved.service']["path"] == '/org/freedesktop/systemd1/unit/systemd_2dresolved_2eservice'
+    assert status['systemd-resolved.service']["id"] == 0
+    assert status['systemd-resolved.service']["type"] == ''
+    assert status['systemd-resolved.service']["objpath"] == '/'