Changed the transform in test of process

tests/test_process_geotiff.py

@@ -21,10 +21,14 @@ 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)
-        mock_src.transform = Affine.translation(0, 0) * Affine.scale(1, -1)  # Mock a valid transform
+
+        # 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
+
         mock_src.crs = 'EPSG:4326'  # CRS should match the polygon's CRS
         
         # Instantiate the service