Changed the transform in test of process

tests/test_process_geotiff.py

@@ -21,16 +21,16 @@ def test_process_geotiff():
         # Mock glob to return a dummy file path
         mock_glob.return_value = ['dummy.tif']
         
-       # Mock the rasterio open function
+        # Mock the rasterio open function
         mock_src = mock_raster.return_value.__enter__.return_value
         mock_src.read.return_value = np.random.rand(1, 10, 10)
 
-        # Correctly mock a valid affine transform (parameters: a, b, c, d, e, f)
-        mock_src.transform = Affine(1, 0, 0,  # a, b, c
-                                    0, -1, 0) # d, e, f
+        # Correctly mock a valid affine transform with required 6 arguments
+        mock_src.transform = Affine(30, 0, 0,  # 30 units per pixel width, no rotation, no x-translation
+                                    0, -30, 0) # 30 units per pixel height (negative to flip the y-axis), no y-translation
 
         mock_src.crs = 'EPSG:4326'  # CRS should match the polygon's CRS
-        
+
         # Instantiate the service
         service = GeoTIFFService(directory='/dummy/path')
 
@@ -43,4 +43,3 @@ def test_process_geotiff():
         assert isinstance(stats['band_0']['count'], int)
         assert 'min' in stats['band_0']
         assert 'max' in stats['band_0']
-