1 files changed, 32 insertions, 0 deletions
diff --git a/tests/test_build_htmlhelp.py b/tests/test_build_htmlhelp.py
new file mode 100644
index 000000000..e7bd8a8f3
--- /dev/null
+++ b/tests/test_build_htmlhelp.py
@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+"""
+    test_build_htmlhelp
+    ~~~~~~~~~~~~~~~~~~~
+
+    Test the HTML Help builder and check output against XPath.
+
+    :copyright: Copyright 2007-2018 by the Sphinx team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+import pytest
+
+from sphinx.builders.htmlhelp import default_htmlhelp_basename
+from sphinx.config import Config
+
+
+@pytest.mark.sphinx('htmlhelp', testroot='basic')
+def test_default_htmlhelp_file_suffix(app, warning):
+    assert app.builder.out_suffix == '.html'
+
+
+@pytest.mark.sphinx('htmlhelp', testroot='basic',
+                    confoverrides={'htmlhelp_file_suffix': '.htm'})
+def test_htmlhelp_file_suffix(app, warning):
+    assert app.builder.out_suffix == '.htm'
+
+
+def test_default_htmlhelp_basename():
+    config = Config({'project': 'Sphinx Documentation'})
+    config.init_values()
+    assert default_htmlhelp_basename(config) == 'sphinxdoc'