failing test for jingo#76

test.diff

diff --git a/jingo/tests/jinja_app/helpers.py b/jingo/tests/jinja_app/helpers.py
new file mode 100644
index 0000000..62f344d
--- /dev/null
+++ b/jingo/tests/jinja_app/helpers.py
@@ -0,0 +1,8 @@
+from __future__ import absolute_import, unicode_literals
+
+from jingo import register
+
+
+@register.filter
+def test_issue_76(anything):
+    return 'was imported'
diff --git a/jingo/tests/test_helpers.py b/jingo/tests/test_helpers.py
index 1450236..9b5c099 100644
--- a/jingo/tests/test_helpers.py
+++ b/jingo/tests/test_helpers.py
@@ -276,3 +276,9 @@ def test_urlparams_fragment():
     eq_(u'/#foo', helpers.urlparams('/', fragment='foo'))
     eq_(u'/#bar', helpers.urlparams('/#foo', fragment='bar'))
     eq_(u'/', helpers.urlparams('/#foo', fragment=''))
+
+
+def test_helper_autodiscovery():
+    """jingo.tests.jinja_app.helpers.test_issue_76 should be available."""
+    s = render('{{ "f"|test_issue_76 }}')
+    eq_('was imported', s)