chore: don't use microsecond precision for

freqtrade/util/__init__.py

@@ -3,6 +3,7 @@ from freqtrade.util.datetime_helpers import (
     dt_from_ts,
     dt_humanize_delta,
     dt_now,
+    dt_now_no_micro,
     dt_ts,
     dt_ts_def,
     dt_ts_none,
@@ -39,6 +40,7 @@ __all__ = [
     "dt_from_ts",
     "dt_humanize_delta",
     "dt_now",
+    "dt_now_no_micro",
     "dt_ts",
     "dt_ts_def",
     "dt_ts_none",

freqtrade/util/datetime_helpers.py

@@ -12,6 +12,13 @@ def dt_now() -> datetime:
     return datetime.now(UTC)
 
 
+def dt_now_no_micro() -> datetime:
+    """Return the current datetime in UTC without microseconds.
+    Should not be used outside of tests.
+    """
+    return dt_now().replace(microsecond=0)
+
+
 def dt_utc(
     year: int,
     month: int,

tests/strategy/test_interface.py

@@ -22,6 +22,7 @@ from freqtrade.strategy.parameters import (
 )
 from freqtrade.strategy.strategy_validation import StrategyResultValidator
 from freqtrade.util import dt_now
+from freqtrade.util.datetime_helpers import dt_now_no_micro
 from tests.conftest import CURRENT_TEST_STRATEGY, TRADE_SIDES, log_has, log_has_re
 
 from .strats.strategy_test_v3 import StrategyTestV3
@@ -33,7 +34,7 @@ _STRATEGY.dp = DataProvider({}, None, None)
 
 
 def test_returns_latest_signal(ohlcv_history):
-    ohlcv_history.loc[1, "date"] = dt_now()
+    ohlcv_history.loc[1, "date"] = dt_now_no_micro()
     # Take a copy to correctly modify the call
     mocked_history = ohlcv_history.copy()
     mocked_history["enter_long"] = 0
@@ -160,7 +161,7 @@ def test_get_signal_exception_valueerror(mocker, caplog, ohlcv_history):
 def test_get_signal_old_dataframe(default_conf, mocker, caplog, ohlcv_history):
     # default_conf defines a 5m interval. we check interval * 2 + 5m
     # this is necessary as the last candle is removed (partial candles) by default
-    ohlcv_history.loc[1, "date"] = dt_now() - timedelta(minutes=16)
+    ohlcv_history.loc[1, "date"] = dt_now_no_micro() - timedelta(minutes=16)
     # Take a copy to correctly modify the call
     mocked_history = ohlcv_history.copy()
     mocked_history["exit_long"] = 0
@@ -179,7 +180,7 @@ def test_get_signal_old_dataframe(default_conf, mocker, caplog, ohlcv_history):
 def test_get_signal_no_sell_column(default_conf, mocker, caplog, ohlcv_history):
     # default_conf defines a 5m interval. we check interval * 2 + 5m
     # this is necessary as the last candle is removed (partial candles) by default
-    ohlcv_history.loc[1, "date"] = dt_now()
+    ohlcv_history.loc[1, "date"] = dt_now_no_micro()
     # Take a copy to correctly modify the call
     mocked_history = ohlcv_history.copy()
     # Intentionally don't set sell column
@@ -223,7 +224,7 @@ def test_ignore_expired_candle(default_conf):
 
 
 def test_assert_df_raise(mocker, caplog, ohlcv_history):
-    ohlcv_history.loc[1, "date"] = dt_now() - timedelta(minutes=16)
+    ohlcv_history.loc[1, "date"] = dt_now_no_micro() - timedelta(minutes=16)
     # Take a copy to correctly modify the call
     mocked_history = ohlcv_history.copy()
     mocked_history["sell"] = 0

tests/util/test_datetime_helpers.py

@@ -6,7 +6,9 @@ import time_machine
 from freqtrade.util import (
     dt_floor_day,
     dt_from_ts,
+    dt_humanize_delta,
     dt_now,
+    dt_now_no_micro,
     dt_ts,
     dt_ts_def,
     dt_ts_none,
@@ -16,15 +18,17 @@ from freqtrade.util import (
     format_ms_time_det,
     shorten_date,
 )
-from freqtrade.util.datetime_helpers import dt_humanize_delta
 
 
 def test_dt_now():
-    with time_machine.travel("2021-09-01 05:01:00 +00:00", tick=False) as t:
+    with time_machine.travel("2021-09-01 05:01:00.123 +00:00", tick=False) as t:
         now = datetime.now(UTC)
         assert dt_now() == now
         assert dt_ts() == int(now.timestamp() * 1000)
         assert dt_ts(now) == int(now.timestamp() * 1000)
+        assert dt_now().microsecond != 0.0
+        assert dt_now_no_micro().microsecond == 0.0
+        assert dt_now_no_micro() == now.replace(microsecond=0)
 
         t.shift(timedelta(hours=5))
         assert dt_now() >= now