diff --git a/tests/test_config.py b/tests/test_config.py
index d16a89dc513cc274005681aa616d2bbf83619311..7e38c8ea851fc61d9ea6e490b47c96c02bee9621 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -1,5 +1,6 @@
 import contextlib
 import datetime
+import itertools
 import logging
 import os
 import pathlib
@@ -63,6 +64,22 @@ def test_output_path_from_section():
     with config.from_section('Templates'):
         assert config.get_output_path() == expected_path
 
+@pytest.mark.parametrize('range_s,date_fmt', [
+    (range_s.replace('/', sep), sep.join(['%Y', '%m', '%d']))
+    for range_s, sep in itertools.product([
+            '-',
+            '2016/06/01-2016/06/30',
+            '2016/06/01-',
+            '-2016/06/30',
+            ], '/-')
+])
+def test_date_in_want_range(range_s, date_fmt):
+    config = config_from_file(os.devnull, ['--date-range=' + range_s, '--date-format', date_fmt])
+    assert config.date_in_want_range(datetime.date(2016, 5, 31)) == range_s.startswith('-')
+    assert config.date_in_want_range(datetime.date(2016, 6, 1))
+    assert config.date_in_want_range(datetime.date(2016, 6, 30))
+    assert config.date_in_want_range(datetime.date(2016, 7, 1)) == range_s.endswith('-')
+
 @pytest.mark.parametrize('arglist,expect_date', [
     ([], None),
     (['-d', '2017-10-12'], datetime.date(2017, 10, 12)),