test: skip the oeffis tests if we don't have dbusmock 0.28.5

test/test_oeffis.py

@@ -50,6 +50,7 @@ from ctypes import c_char_p, c_int, c_uint32, c_void_p
 from typing import Dict, List, Tuple, Type, Optional, TextIO
 from gi.repository import GLib  # type: ignore
 from dbus.mainloop.glib import DBusGMainLoop
+import unittest
 
 import attr
 import ctypes
@@ -66,6 +67,16 @@ DBusGMainLoop(set_as_default=True)
 PREFIX = "oeffis_"
 
 
+def version_at_least(have, required) -> bool:
+    for h, r in zip(have.split("."), required.split(".")):
+        if h < r:
+            return False
+        elif h > r:
+            return True
+
+    return True
+
+
 @attr.s
 class _Api:
     name: str = attr.ib()
@@ -291,6 +302,10 @@ class TestOeffis(dbusmock.DBusTestCase):
     Test class that sets up a mocked DBus session bus to be used by liboeffis.so.
     """
 
+    @unittest.skipIf(
+        not version_at_least(dbusmock.__version__, "0.28.5"),
+        "dbusmock >= 0.28.5 required",
+    )
     @classmethod
     def setUpClass(cls):
         cls.PORTAL_NAME = "RemoteDesktop"
@@ -391,3 +406,19 @@ class TestOeffis(dbusmock.DBusTestCase):
         assert eisfd is not None
 
         assert eisfd.recv(64) == b"VANILLA"  # that's what the template sends
+
+
+def test_version_compare():
+    assert version_at_least("1", "1.0")
+    assert version_at_least("1.0", "1.0")
+    assert version_at_least("1.1", "1.0")
+    assert version_at_least("1.0.1", "1.0.0")
+    assert version_at_least("1.0.2", "1.0.1")
+    assert version_at_least("1.1", "1.0.2")
+    assert version_at_least("1.1.1", "1.0.2")
+    assert version_at_least("1.0.2.dev1234", "1.0.2")
+    assert version_at_least("2", "1.3")
+
+    assert not version_at_least("1.0", "1.1")
+    assert not version_at_least("1.0.2", "1.0.3")
+    assert not version_at_least("1.0.2.dev1234", "1.0.3")