Test issue 20

Author: veghp

tests/test_fragments/test_fragments.py

@@ -1,5 +1,7 @@
 import pytest
 from Bio.Seq import Seq
+from Bio.SeqRecord import SeqRecord
+from Bio.Restriction import BsmBI
 from dnacauldron.Fragment import (
     StickyEnd,
     StickyEndSeq,
@@ -55,3 +57,11 @@ def test_StickyEndSeqFragment():
     sticky_fragment = StickyEndFragment(sticky)
     with pytest.raises(ValueError):
         sticky_fragment.circularized()
+
+
+# This tests for case-sensitivity (Github issue #20):
+def test_list_from_record_digestion():
+    # The sequence contains 2 BsmBI sites:
+    record = SeqRecord(Seq("AAAACGTCTCAccccTTaaaaaaaaaaaaTTGGGGAGAGACGTTTttt"))
+    digest_list = StickyEndFragment.list_from_record_digestion(record, BsmBI)
+    assert len(digest_list) == 3