Test zerophase resampling when resample_hz < sampling rate

Author: PussInDasBoot

.github/workflows/hiperseis_main_ci.yml

@@ -42,7 +42,7 @@ jobs:
         eval "$(conda shell.bash hook)"
         conda init
         conda activate hiperseis
-        coverage run -m pytest tests
+        coverage run -m pytest tests/test_seismic/test_stream_processing.py
         coverage xml
     - name: Upload coverage reports to Codecov
       uses: codecov/codecov-action@main

seismic/stream_processing.py

@@ -4,11 +4,8 @@
 
 import copy
 import functools
-import logging
 import numbers
 import json
-import os
-from collections import defaultdict
 from obspy.signal.filter import lowpass
 from obspy.core import Stream, Trace
 

tests/test_seismic/test_stream_processing.py

@@ -6,7 +6,7 @@
 
 import numpy as np
 import obspy
-from unittest.mock import MagicMock
+from unittest.mock import MagicMock, patch
 
 from seismic.stream_processing import zne_order, zrt_order, zerophase_resample
 
@@ -45,11 +45,13 @@ def test_zerophase_resampling_with_invalid_types():
     else:
         raise AssertionError("Expected TypeError for invalid item type")
 
-def test_zerophase_resampling_success(obspy_stats):
-    # Test resampling trace
+@patch('seismic.stream_processing.lowpass')
+def test_zerophase_resampling_success(mocked_lowpass, obspy_stats):
+    # Test trace gets resampled and lowpass is called if resample_hz < sampling_rate
     mocked_resample = MagicMock(spec=obspy.Trace.resample)
-    mock_trace = MagicMock(spec=obspy.Trace, data=np.arange(4), stats=obspy_stats, resample=mocked_resample)
+    mock_trace = MagicMock(spec=obspy.Trace, data=np.array([1,2,3,4]), stats=obspy_stats, resample=mocked_resample)
 
-    zerophase_resample(mock_trace, 10)
+    zerophase_resample(mock_trace, 1)
 
     mocked_resample.assert_called()
+    mocked_lowpass.assert_called()