[glibmm/glibmm-2-64] tests/glibmm_binding: Test that unbind() stops props syncing

[Kjell Ahlstedt <kjellahl src gnome org>]

commit c03a7e5aff27f495ffc61daea9171520f6c65cc6
Author: Daniel Boles <dboles src gnome org>
Date:   Mon Jan 11 14:47:35 2021 +0100

    tests/glibmm_binding: Test that unbind() stops props syncing

 tests/glibmm_binding/main.cc | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/tests/glibmm_binding/main.cc b/tests/glibmm_binding/main.cc
index cdbcaf7b..6b03b5f4 100644
--- a/tests/glibmm_binding/main.cc
+++ b/tests/glibmm_binding/main.cc
@@ -90,6 +90,11 @@ test()
     // Ensure no change when invalid source results in false return
     source.property_string() = "six six six";
     g_assert_cmpint(target.property_int(), ==, 47);
+
+    // or when we manually unbind
+    binding->unbind();
+    source.property_string() = "666";
+    g_assert_cmpint(target.property_int(), ==, 47);
   }
 
   // Ensure the binding was released when its RefPtr went out of scope