[fix] Handle importing UTF-16 encoded CSV files

openwisp_radius/tests/static/test_batch_utf16_file2.csv

@@ -0,0 +1 @@
+44D1FADD7379,cleartext$D0weL6L8,[email protected],EAPUSER1,USER1

openwisp_radius/tests/test_utils.py

@@ -23,7 +23,13 @@ def test_validate_file_format(self):
             'Unrecognized file format, the supplied file does not look like a CSV file.'
             in error.exception.message
         )
-
+
+        utf_16_file_1_format_path = self._get_path('static/test_batch_utf16_file1.csv')
+        assert validate_csvfile(open(utf_16_file_1_format_path, 'rb')) is None
+
+        utf_16_file_2_format_path = self._get_path('static/test_batch_utf16_file2.csv')
+        assert validate_csvfile(open(utf_16_file_2_format_path, 'rb')) is None
+
     def test_validate_csvfile(self):
         invalid_csv_path = self._get_path('static/test_batch_invalid.csv')
         improper_csv_path = self._get_path('static/test_batch_improper.csv')

requirements-test.txt

@@ -13,3 +13,4 @@ openwisp-monitoring @ https://github.com/openwisp/openwisp-monitoring/tarball/ma
 django-redis~=5.4.0
 mock-ssh-server~=0.9.1
 channels_redis~=4.2.1
+chardet