Add test for deprecation updating

tests/strategy/strats/legacy_strategy.py

@@ -31,6 +31,7 @@ class TestStrategyLegacy(IStrategy):
     stoploss = -0.10
 
     # Optimal ticker interval for the strategy
+    # Keep the legacy value here to test compatibility
     ticker_interval = '5m'
 
     def populate_indicators(self, dataframe: DataFrame) -> DataFrame:

tests/strategy/test_strategy.py

@@ -370,6 +370,8 @@ def test_call_deprecated_function(result, monkeypatch, default_conf):
     assert strategy._buy_fun_len == 2
     assert strategy._sell_fun_len == 2
     assert strategy.INTERFACE_VERSION == 1
+    assert strategy.timeframe == '5m'
+    assert strategy.ticker_interval == '5m'
 
     indicator_df = strategy.advise_indicators(result, metadata=metadata)
     assert isinstance(indicator_df, DataFrame)

tests/test_configuration.py

@@ -1137,3 +1137,15 @@ def test_process_deprecated_setting(mocker, default_conf, caplog):
                                'sectionB', 'deprecated_setting')
     assert not log_has_re('DEPRECATED', caplog)
     assert default_conf['sectionA']['new_setting'] == 'valA'
+
+
+def test_process_deprecated_ticker_interval(mocker, default_conf, caplog):
+    message = "DEPRECATED: Please use 'timeframe' instead of 'ticker_interval."
+    process_temporary_deprecated_settings(default_conf)
+    assert not log_has(message, caplog)
+
+    del default_conf['timeframe']
+    default_conf['ticker_interval'] = '15m'
+    process_temporary_deprecated_settings(default_conf)
+    assert log_has(message, caplog)
+    assert default_conf['ticker_interval'] == '15m'