laforge has uploaded this change for review.
data-driven TLV unit data test support
While we do have the _test_de_encode data driven tests for file
definitions, we don't yet have something similar for derived classes of
BER_TLV_IE. This means that TLVs used outside of the filesystem context
(for example, decoding the SELECT/STATUS response, but also eUICC and
other stuff) do not yet have test coverage.
This commit just adds the related test code, but no test data yet.
Related: OS#6317
Change-Id: Ied85f292bb57fde11dc188be84e3384dc3ff1601
---
A tests/test_tlvs.py
1 file changed, 138 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/41/35441/1
diff --git a/tests/test_tlvs.py b/tests/test_tlvs.py
new file mode 100755
index 0000000..d35be3b
--- /dev/null
+++ b/tests/test_tlvs.py
@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+
+# (C) 2023 by Harald Welte <laforge@osmocom.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+import unittest
+import logging
+
+from pySim.utils import b2h, h2b, all_subclasses
+from pySim.tlv import *
+
+import pySim.iso7816_4
+import pySim.ts_102_221
+import pySim.ts_102_222
+import pySim.ts_31_102
+import pySim.ts_31_103
+import pySim.ts_51_011
+import pySim.sysmocom_sja2
+import pySim.gsm_r
+import pySim.cdma_ruim
+
+if 'unittest.util' in __import__('sys').modules:
+ # Show full diff in self.assertEqual.
+ __import__('sys').modules['unittest.util']._MAX_LENGTH = 999999999
+
+def get_qualified_name(c):
+ """return the qualified (by module) name of a class."""
+ return "%s.%s" % (c.__module__, c.__name__)
+
+class TLV_IE_Test(unittest.TestCase):
+ maxDiff = None
+
+ @classmethod
+ def get_classes(cls):
+ """get list of TLV_IE sub-classes."""
+ return all_subclasses(TLV_IE)
+
+ @classmethod
+ def setUpClass(cls):
+ """set-up method called once for this class by unittest framework"""
+ cls.classes = cls.get_classes()
+
+ def test_decode_tlv(self):
+ """Test the decoder for a TLV_IE. Requires the given TLV_IE subclass
+ to have a '_test_decode' attribute, containing a list of tuples. Each tuple
+ is a 2-tuple (hexstring, decoded_dict).
+ """
+ for c in self.classes:
+ name = get_qualified_name(c)
+ if hasattr(c, '_test_decode'):
+ for t in c._test_decode:
+ with self.subTest(name, test_decode=t):
+ inst = c()
+ encoded = t[0]
+ decoded = t[1]
+ context = t[2] if len(t) == 3 else {}
+ logging.debug("Testing decode of %s", name)
+ re_dec, remainder = inst.from_tlv(h2b(encoded), context=context)
+ self.assertEqual(decoded, re_dec)
+
+ def test_encode_tlv(self):
+ """Test the encoder for a TLV_IE. Requires the given TLV_IE subclass
+ to have a '_test_encode' attribute, containing a list of tuples. Each tuple
+ is a 2-tuple (hexstring, decoded_dict).
+ """
+ for c in self.classes:
+ name = get_qualified_name(c)
+ if hasattr(c, '_test_encode'):
+ for t in c._test_encode:
+ with self.subTest(name, test_encode=t):
+ inst = c()
+ encoded = t[0]
+ decoded = t[1]
+ context = t[2] if len(t) == 3 else {}
+ logging.debug("Testing encode of %s", name)
+ inst.from_dict(decoded)
+ re_enc = b2h(inst.to_tlv(context))
+ self.assertEqual(encoded.upper(), re_enc.upper())
+
+ def test_de_encode_tlv(self):
+ """Test the decoder and encoder for a TLV_IE. Performs first a decoder
+ test, and then re-encodes the decoded data, comparing the re-encoded data with the
+ initial input data.
+
+ Requires the given TLV_IE subclass to have a '_test_de_encode' attribute,
+ containing a list of tuples. Each tuple is a 2-tuple (hexstring, decoded_dict).
+ """
+ for c in self.classes:
+ name = get_qualified_name(c)
+ if hasattr(c, '_test_de_encode'):
+ for t in c._test_de_encode:
+ with self.subTest(name, test_de_encode=t):
+ inst = c()
+ encoded = t[0]
+ decoded = t[1]
+ context = t[2] if len(t) == 3 else {}
+ logging.debug("Testing decode of %s", name)
+ re_dec, remainder = inst.from_tlv(h2b(encoded), context=context)
+ self.assertEqual(decoded, re_dec)
+ logging.debug("Testing re-encode of %s", name)
+ re_enc = b2h(inst.to_tlv(context=context))
+ self.assertEqual(encoded.upper(), re_enc.upper())
+
+
+if __name__ == '__main__':
+ logger = logging.getLogger()
+ logger.setLevel(logging.DEBUG)
+ unittest.main()
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