diff --git a/tests/test_recall.py b/tests/test_recall.py
index 022d1ee..f37d32b 100644
--- a/tests/test_recall.py
+++ b/tests/test_recall.py
@@ -65,12 +65,20 @@ def test_recall_function(self):
         """Teest of ts_recall function.
         """
 
-        real = np.array([1, 1, 0, 0, 0])
-        pred = np.array([1, 1, 1, 1, 0])
+        # test case1
+        real = np.array([1, 0, 0, 0, 0])
+        pred = np.array([1, 1, 0, 0, 0])
 
         score = ts_recall(real, pred)
         self.assertEqual(score, 1.0)
 
+        # test case2
+        real = np.array([1, 1, 0, 0, 0])
+        pred = np.array([0, 0, 1, 1, 1])
+
+        score = ts_recall(real, pred)
+        self.assertEqual(score, 0.0)
+
     def test_recall_function_with_list(self):
         """Teest of ts_recall function with list type arguments.
         """