diff --git a/pyproject.toml b/pyproject.toml
index 3b6f569..f2dc660 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,6 +12,7 @@ dependencies = [
     "moto",
     "polars",
     "s3fs",
+    "setuptools",
     "tenacity",
 ]
 name = "dri-utils"
diff --git a/src/driutils/benchmarking/__init__.py b/src/driutils/benchmarking/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/driutils/test_data/create_test_cosmos_data.py b/src/driutils/benchmarking/create_test_cosmos_data.py
similarity index 83%
rename from src/driutils/test_data/create_test_cosmos_data.py
rename to src/driutils/benchmarking/create_test_cosmos_data.py
index 0699eba..fe4275a 100644
--- a/src/driutils/test_data/create_test_cosmos_data.py
+++ b/src/driutils/benchmarking/create_test_cosmos_data.py
@@ -20,45 +20,14 @@
 You (might) need extended permissions to write the test data to s3.
 """
 
-import datetime
 import random
-from datetime import date, datetime, timedelta
-from typing import Optional, Tuple, Union
+from datetime import date, timedelta
 
 import duckdb
 import polars as pl
 import s3fs
 
-
-def steralize_dates(
-    start_date: Union[date, datetime], end_date: Optional[Union[date, datetime]]
-) -> Tuple[Union[date, datetime], datetime]:
-    """
-    Configures and validates start and end dates.
-
-    Args:
-        start_date: The start date.
-        end_date: The end date.
-
-    Returns:
-        A tuple containing the start date and the end date.
-
-    Raises:
-        UserWarning: If the start date is after the end date.
-    """
-    # Ensure the start_date is not after the end_date
-    if start_date > end_date:
-        raise UserWarning(f"Start date must come before end date: {start_date} > {end_date}")
-
-    # If start_date is of type date, convert it to datetime with time at start of the day
-    if isinstance(start_date, date):
-        start_date = datetime.combine(start_date, datetime.min.time())
-
-    # If end_date is of type date, convert it to datetime to include the entire day
-    if isinstance(end_date, date):
-        end_date = datetime.combine(end_date, datetime.max.time())
-
-    return start_date, end_date
+from driutils.datetime import steralize_date_range
 
 
 def write_parquet_s3(bucket: str, key: str, data: pl.DataFrame) -> None:
@@ -94,7 +63,7 @@ def build_test_precip_data(
     test_data = pl.DataFrame(schema=schema)
 
     # Format dates
-    start_date, end_date = steralize_dates(start_date, end_date)
+    start_date, end_date = steralize_date_range(start_date, end_date)
 
     # Build datetime range series
     datetime_range = pl.datetime_range(start_date, end_date, interval, eager=True).alias("time")
@@ -124,6 +93,7 @@ def build_test_precip_data(
 
         if isinstance(dtype, pl.Int64):
             col_values = pl.Series(column, [random.randrange(1, 255, 1) for i in range(required_rows)])
+            col_values.round(3)
 
         test_data.replace_column(test_data.get_column_index(column), col_values)