CI/TST: Skip slow test on Windos

Author: kernc

backtesting/test/_test.py

@@ -86,6 +86,7 @@ def test_run_invalid_param(self):
         bt = Backtest(GOOG, SmaCross)
         self.assertRaises(AttributeError, bt.run, foo=3)
 
+    @unittest.skipIf('win' in sys.platform, 'Slow on CI')
     def test_run_speed(self):
         bt = Backtest(GOOG, SmaCross)
         start = time.process_time()