Make readable hyperopt best parameters result

freqtrade/tests/optimize/test_hyperopt.py

@@ -77,3 +77,40 @@ def test_no_log_if_loss_does_not_improve(mocker):
     })
 
     assert not logger.called
+
+
+def test_fmin_best_results(mocker, caplog):
+    fmin_result = {
+      "adx": 1,
+      "adx-value": 15.0,
+      "fastd": 1,
+      "fastd-value": 40.0,
+      "green_candle": 1,
+      "mfi": 0,
+      "over_sar": 0,
+      "rsi": 1,
+      "rsi-value": 37.0,
+      "trigger": 2,
+      "uptrend_long_ema": 1,
+      "uptrend_short_ema": 0,
+      "uptrend_sma": 0
+    }
+
+    mocker.patch('freqtrade.optimize.hyperopt.MongoTrials', return_value=create_trials(mocker))
+    mocker.patch('freqtrade.optimize.preprocess')
+    mocker.patch('freqtrade.optimize.load_data')
+    mocker.patch('freqtrade.optimize.hyperopt.fmin', return_value=fmin_result)
+
+    args = mocker.Mock(epochs=1, config='config.json.example')
+    start(args)
+
+    exists = [
+        'Best parameters',
+        '"adx": {\n        "enabled": true,\n        "value": 15.0\n    },',
+        '"green_candle": {\n        "enabled": true\n    },',
+        '"mfi": {\n        "enabled": false\n    },',
+        '"trigger": {\n        "type": "ao_cross_zero"\n    },'
+    ]
+
+    for line in exists:
+        assert line in caplog.text