vendor: OpenCV 5.0.0 snapshot at 40738fb16ceddb5fb3fea747585f7ce6abb0605b

modules/python/test/test_algorithm_rw.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+"""Algorithm serialization test."""
+import tempfile
+import os
+import cv2 as cv
+from tests_common import NewOpenCVTests
+
+
+class algorithm_rw_test(NewOpenCVTests):
+    def test_algorithm_rw(self):
+        fd, fname = tempfile.mkstemp(prefix="opencv_python_algorithm_", suffix=".yml")
+        os.close(fd)
+
+        # some arbitrary non-default parameters
+        gold = cv.ORB_create(nfeatures=200, scaleFactor=1.3, nlevels=5, edgeThreshold=28)
+        gold.write(cv.FileStorage(fname, cv.FILE_STORAGE_WRITE), "ORB")
+
+        fs = cv.FileStorage(fname, cv.FILE_STORAGE_READ)
+        algorithm = cv.ORB_create()
+        algorithm.read(fs.getNode("ORB"))
+
+        self.assertEqual(algorithm.getMaxFeatures(), 200)
+        self.assertAlmostEqual(algorithm.getScaleFactor(), 1.3, places=6)
+        self.assertEqual(algorithm.getNLevels(), 5)
+        self.assertEqual(algorithm.getEdgeThreshold(), 28)
+
+        os.remove(fname)