added test in test_unityagents.py for curriculum class

python/test_unityagents.py

 import socket
 import mock
 import struct
+import json
-from unityagents import UnityEnvironment, UnityEnvironmentException, UnityActionException, BrainInfo, BrainParameters
+from unityagents import UnityEnvironment, UnityEnvironmentException, UnityActionException, BrainInfo, BrainParameters, Curriculum
 
 
 def append_length(input):
                 env.close()
                 assert not env._loaded
                 mock_socket.close.assert_called_once()
+
+
+
+dummy_curriculum= json.loads('''{
+    "measure" : "reward",
+    "thresholds" : [10, 20, 50],
+    "min_lesson_length" : 3,
+    "signal_smoothing" : true, 
+    "parameters" : 
+    {
+        "param1" : [0.7, 0.5, 0.3, 0.1],
+        "param2" : [100, 50, 20, 15],
+        "param3" : [0.2, 0.3, 0.7, 0.9]
+    }
+}''')
+bad_curriculum= json.loads('''{
+    "measure" : "reward",
+    "thresholds" : [10, 20, 50],
+    "min_lesson_length" : 3,
+    "signal_smoothing" : false, 
+    "parameters" : 
+    {
+        "param1" : [0.7, 0.5, 0.3, 0.1],
+        "param2" : [100, 50, 20],
+        "param3" : [0.2, 0.3, 0.7, 0.9]
+    }
+}''')
+
+
+
+def test_curriculum():
+    open_name = '%s.open' % __name__
+    with mock.patch('json.load') as mock_load:
+      with mock.patch(open_name, create=True) as mock_open:
+        mock_open.return_value = 0
+        mock_load.return_value = bad_curriculum
+        with pytest.raises(UnityEnvironmentException):
+          curriculum = Curriculum('test_unityagents.py', {"param1":1,"param2":1,"param3":1})
+        mock_load.return_value = dummy_curriculum
+        with pytest.raises(UnityEnvironmentException):
+          curriculum = Curriculum('test_unityagents.py', {"param1":1,"param2":1})
+        curriculum = Curriculum('test_unityagents.py', {"param1":1,"param2":1,"param3":1})
+        assert curriculum.get_lesson_number() == 0
+        curriculum.set_lesson_number(1)
+        assert curriculum.get_lesson_number() == 1
+        curriculum.get_lesson(10)
+        assert curriculum.get_lesson_number() == 1
+        curriculum.get_lesson(30)
+        curriculum.get_lesson(30)
+        assert curriculum.get_lesson_number() == 1
+        assert curriculum.lesson_length == 3
+        assert curriculum.get_lesson(30) == {'param1': 0.3, 'param2': 20, 'param3': 0.7}
+        assert curriculum.lesson_length == 0
+        assert curriculum.get_lesson_number() == 2
+