create test for noisereduce

tests/test_reducenoise.py

@@ -0,0 +1,23 @@
+import os
+import pytest
+import soundfile as sf
+from src.refinement.deepfilternet_wrapper import noisereduce
+
+def test_noisereduce():
+    """Test noise reduction function to ensure output is valid."""
+    input_audio_path = "tests/test_audio/noise.wav"
+    output_audio_path = "/tmp/noisereduce/output.wav"
+
+    # Ensure test input exists
+    assert os.path.exists(input_audio_path), f"Test input file {input_audio_path} not found."
+
+    # Run noise reduction
+    noisereduce(input_audio_path, output_audio_path)
+
+    # Check if the output file exists
+    assert os.path.exists(output_audio_path), "Output file was not created."
+
+    # Load the enhanced audio and check if it's valid
+    enhanced_audio, sample_rate = sf.read(output_audio_path)
+    assert len(enhanced_audio) > 0, "Enhanced audio is empty."
+    assert sample_rate > 0, "Invalid sample rate in output file."