[gtk+] Prevent local filesystem influence in the a11y tests

[Matthias Clasen <matthiasc src gnome org>]

commit 7e8b7a72acc9c623afe5f3eb2905cebb4b96b5d0
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Nov 21 13:05:47 2011 -0500

    Prevent local filesystem influence in the a11y tests
    
    By using the 'unix' gio volume monitor, we avoid variation
    in the file chooser that otherwise breaks the 'pickers' test.

 tests/a11y/Makefile.am |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/tests/a11y/Makefile.am b/tests/a11y/Makefile.am
index 6bc6267..6faf9d7 100644
--- a/tests/a11y/Makefile.am
+++ b/tests/a11y/Makefile.am
@@ -17,6 +17,10 @@ LDADD = \
 	$(top_builddir)/gtk/libgtk-3.la \
 	$(GTK_DEP_LIBS)
 
+# work around random file systems showing up in the file chooser,
+# breaking the 'pickers' test
+TESTS_ENVIRONMENT = GIO_USE_VOLUME_MONITOR=unix
+
 TEST_PROGS += accessibility-dump
 
 TEST_PROGS += tree-performance