[at-spi2-core: 5/11] Test that asking for an unknown property gives a DBus error

[Federico Mena Quintero <federico src gnome org>]

commit ed29a224c769fed12e7f22736fcb386031fb4c8c
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Jul 13 15:05:57 2022 -0500

    Test that asking for an unknown property gives a DBus error

 tests/registryd/test_root_accessible.py | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/tests/registryd/test_root_accessible.py b/tests/registryd/test_root_accessible.py
index a19fcb2a..7d1fabfe 100644
--- a/tests/registryd/test_root_accessible.py
+++ b/tests/registryd/test_root_accessible.py
@@ -4,6 +4,9 @@
 # in conftest.py.  So, a function "def test_foo(bar)" will get a bar()
 # fixture created for it.
 
+import pytest
+import dbus
+
 PROPERTIES_IFACE = 'org.freedesktop.DBus.Properties'
 ACCESSIBLE_IFACE = 'org.a11y.atspi.Accessible'
 
@@ -20,3 +23,7 @@ def test_accessible_iface_properties(registry_root, session_manager):
 
     for prop_name, expected in values:
         assert get_property(registry_root, ACCESSIBLE_IFACE, prop_name) == expected
+
+def test_unknown_property_yields_error(registry_root, session_manager):
+    with pytest.raises(dbus.exceptions.DBusException):
+        get_property(registry_root, ACCESSIBLE_IFACE, 'NonexistentProperty')