[glibmm/wip/dboles/Binding-Issue#62: 5/7] Binding: Test that unbind() stops props syncing

[Daniel Boles <dboles src gnome org>]

commit 471c47084f1156701fa07dd9b251506e93b2beb1
Author: Daniel Boles <dboles src gnome org>
Date:   Fri Nov 15 18:30:00 2019 +0000

    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 9b727e51..1f86cea2 100644
--- a/tests/glibmm_binding/main.cc
+++ b/tests/glibmm_binding/main.cc
@@ -80,6 +80,11 @@ 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