Add testcase for PR #2311

tests/roots/test-ext-inheritance_diagram/conf.py

@@ -0,0 +1,9 @@
+# -*- coding: utf-8 -*-
+
+import os
+import sys
+
+sys.path.insert(0, os.path.abspath('.'))
+
+extensions = ['sphinx.ext.inheritance_diagram']
+master_doc = 'index'

tests/roots/test-ext-inheritance_diagram/index.rst

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+============================
+test-ext-inheritance_diagram
+============================
+
+.. inheritance-diagram:: test.Foo

tests/roots/test-ext-inheritance_diagram/test.py

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+# -*- coding: utf-8 -*-
+
+
+class Foo(object):
+    pass
+
+
+class Bar(Foo):
+    pass
+
+
+class Baz(Bar):
+    pass
+
+
+class Qux(Foo):
+    pass

tests/test_ext_inheritance_diagram.py

@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+"""
+    test_ext_inheritance_diagram
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    Test sphinx.ext.inheritance_diagram extension.
+
+    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+from util import with_app
+
+
+@with_app('html', testroot='ext-inheritance_diagram')
+def test_inheritance_diagram_html(app, status, warning):
+    app.builder.build_all()