add test_algorithm_rw using AKAZE

modules/python/test/test_algorithm_rw.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+
+'''
+Algorithm serializaion test
+'''
+import cv2
+
+from tests_common import NewOpenCVTests
+
+class algorithm_rw_test(NewOpenCVTests):
+    def test_algorithm_rw(self):
+        # some arbitrary non-default parameters
+        gold = cv2.AKAZE_create(descriptor_size=1, descriptor_channels=2, nOctaves=3, threshold=4.0)
+        gold.write(cv2.FileStorage("params.yml", 1), "AKAZE")
+
+        fs = cv2.FileStorage("params.yml", 0)
+        algorithm = cv2.AKAZE_create()
+        algorithm.read(fs.getNode("AKAZE"))
+
+        self.assertEqual(algorithm.getDescriptorSize(), 1)
+        self.assertEqual(algorithm.getDescriptorChannels(), 2)
+        self.assertEqual(algorithm.getNOctaves(), 3)
+        self.assertEqual(algorithm.getThreshold(), 4.0)