SS 2025

2025_Research_Software_Engineering_2/tests/test_merge_series.py

@@ -0,0 +1,23 @@
+"""Unit tests for the merge_series function"""
+
+import os
+import pandas as pd
+from merge_series import merge_series
+
+
+def test_merge_series(local_tmp_path):
+    """
+    Test that merge_series combines the data and creates
+    a non empty CSV.file.
+    """
+    input_directory = "tests/data/sunshine_duration"
+    output_path = local_tmp_path / "merged.csv"
+    expected_path = "tests/data/sunshine_duration.csv"
+
+    merge_series(input_directory, output_path)
+    expected_data = pd.read_csv(expected_path)
+    output_data = pd.read_csv(output_path)
+
+    assert os.path.exists(output_path)
+    assert os.path.getsize(output_path) > 0
+    pd.testing.assert_frame_equal(expected_data, output_data)