Implemented a test for the new get_random_neighbor method

Author: fjwillemsen

test/test_searchspace.py

@@ -246,8 +246,16 @@ def test_neighbors_hamming():
         (3, 4, 'string_1'),
     ]
 
+    # test the neighbors
     __test_neighbors(test_config, expected_neighbors, "Hamming")
 
+    # test the random neighbor function
+    neighbors = simple_searchspace.get_neighbors(test_config, "Hamming")
+    for i in range(10):
+        random_neighbor = simple_searchspace.get_random_neighbor(test_config, "Hamming")
+        assert random_neighbor in neighbors
+        assert random_neighbor != test_config
+
 
 def test_neighbors_strictlyadjacent():
     """Test whether the strictly adjacent neighbors are as expected."""
@@ -259,8 +267,16 @@ def test_neighbors_strictlyadjacent():
         (1.5, 5.5, 'string_2'),
     ]
 
+    # test the neighbors
     __test_neighbors(test_config, expected_neighbors, "strictly-adjacent")
 
+    # test the random neighbor function
+    neighbors = simple_searchspace.get_neighbors(test_config, "strictly-adjacent")
+    for i in range(10):
+        random_neighbor = simple_searchspace.get_random_neighbor(test_config, "strictly-adjacent")
+        assert random_neighbor in neighbors
+        assert random_neighbor != test_config
+
 
 def test_neighbors_adjacent():
     """Test whether the adjacent neighbors are as expected."""
@@ -272,8 +288,16 @@ def test_neighbors_adjacent():
         (1.5, 5.5, 'string_2'),
     ]
 
+    # test the neighbors
     __test_neighbors(test_config, expected_neighbors, "adjacent")
 
+    # test the random neighbor function
+    neighbors = simple_searchspace.get_neighbors(test_config, "adjacent")
+    for i in range(10):
+        random_neighbor = simple_searchspace.get_random_neighbor(test_config, "adjacent")
+        assert random_neighbor in neighbors
+        assert random_neighbor != test_config
+
 
 def test_neighbors_fictious():
     """Test whether the neighbors are as expected for a fictious parameter configuration (i.e. not existing in the search space due to restrictions)."""