tests: Extend "properties" tests to increase coverage
tests: Extend "properties" tests to increase coverage

Based on test-case from https://bugzilla.gnome.org/show_bug.cgi?id=683160

frida/vala,frida/vala,GNOME/vala,GNOME/vala,frida/vala,frida/vala,GNOME/vala,GNOME/vala,frida/vala