Added unit tests for MT5

requirements.txt

@@ -5,4 +5,5 @@ pytz==2021.1
 scipy==1.6.0
 logging==0.4.9.6
 pyyaml==5.4.1
-wxpython==4.1.1
+wxpython==4.1.1
+mock==4.0.3

test/test_mt5.py

@@ -0,0 +1,77 @@
+import unittest
+from unittest.mock import patch
+import mt5_correlation.mt5 as mt5
+import pandas as pd
+from datetime import datetime
+
+
+class Symbol:
+    """ A Mock symbol class"""
+    name = None
+    visible = None
+
+    def __init__(self, name, visible):
+        self.name = name
+        self.visible = visible
+
+
+class TestMT5(unittest.TestCase):
+    """
+    Unit test for MT5. Uses mock to mock MetaTrader5 connection.
+    """
+
+    # Mock symbols. 5 Symbols, 4 visible.
+    mock_symbols = [Symbol(name='SYMBOL1', visible=True),
+                    Symbol(name='SYMBOL2', visible=True),
+                    Symbol(name='SYMBOL3', visible=False),
+                    Symbol(name='SYMBOL4', visible=True),
+                    Symbol(name='SYMBOL5', visible=True)]
+
+    # Mock prices for symbol 1
+    mock_prices = pd.DataFrame(columns=['time', 'close'],
+                               data=[[datetime(2021, 1, 1, 1, 5, 0), 123.123],
+                                     [datetime(2021, 1, 1, 1, 10, 0), 123.124],
+                                     [datetime(2021, 1, 1, 1, 15, 0), 123.125],
+                                     [datetime(2021, 1, 1, 1, 20, 0), 125.126],
+                                     [datetime(2021, 1, 1, 1, 25, 0), 123.127],
+                                     [datetime(2021, 1, 1, 1, 30, 0), 123.128]])
+
+    @patch('mt5_correlation.mt5.MetaTrader5')
+    def test_get_symbols(self, mock):
+        # Mock return value
+        mock.symbols_get.return_value = self.mock_symbols
+
+        # Call get_symbols
+        symbols = mt5.MT5().get_symbols()
+
+        # There should be four, as one is set as not visible
+        self.assertTrue(len(symbols) == 4, "There should be 5 symbols returned from MT5.")
+
+    @patch('mt5_correlation.mt5.MetaTrader5')
+    def test_get_prices(self, mock):
+        # Mock return value
+        mock.copy_rates_range.return_value = self.mock_prices
+
+        # Call get prices
+        prices = mt5.MT5().get_prices(symbol='SYMBOL1', from_date='01-JAN-2021 01:00:00',
+                                      to_date='01-JAN-2021 01:10:25', timeframe=mt5.TIMEFRAME_M5)
+
+        # There should be 6
+        self.assertTrue(len(prices.index) == 6, "There should be 6 prices.")
+
+    @patch('mt5_correlation.mt5.MetaTrader5')
+    def test_get_ticks(self, mock):
+        # Mock return value
+        mock.copy_ticks_range.return_value = self.mock_prices
+
+        # Call get ticks
+        ticks = mt5.MT5().get_ticks(symbol='SYMBOL1', from_date='01-JAN-2021 01:00:00', to_date='01-JAN-2021 01:10:25')
+
+        # There should be 6
+        self.assertTrue(len(ticks.index) == 6, "There should be 6 prices.")
+
+
+if __name__ == '__main__':
+    unittest.main()
+
+