text: # Copyright 2001 by Gavin E. Crooks.  All rights reserved.
  # This code is part of the Biopython distribution and governed by its
  # license.  Please see the LICENSE file that should have been included
  # as part of this package.
  
  """Unit test for Residues."""
  
  import unittest
  from Bio.SCOP.Residues import Residues
  
  
  class ResiduesTests(unittest.TestCase):
      res = (
          ("-", ()),
          ("A:", (("A", "", ""),)),
          ("1:", (("1", "", ""),)),
          ("1-100", (("", "1", "100"),)),
          ("B:1-101", (("B", "1", "101"),)),
          ("1:1a-100a", (("1", "1a", "100a"),)),
          ("a:-100a--1a", (("a", "-100a", "-1a"),)),
          ("-1-100", (("", "-1", "100"),)),
          ("-1-100", (("", "-1", "100"),)),
          ("A:12-19,A:23-25", (("A", "12", "19"), ("A", "23", "25"))),
          ("12-19,1:23-25", (("", "12", "19"), ("1", "23", "25"))),
          ("0-1,1:-1a-25a,T:", (("", "0", "1"), ("1", "-1a", "25a"), ("T", "", ""))),
      )
  
      def testParse(self):
          for loc in self.res:
              r = Residues(loc[0])
              self.assertEqual(r.fragments, loc[1])
  
      def testStr(self):
          for loc in self.res:
              r = Residues(loc[0])
              self.assertEqual(str(r), loc[0])
  
      def testAstralParse(self):
          """Test if we can parse residue subsets enclosed in brackets."""
          for loc in self.res:
              r = Residues("(" + loc[0] + ")")
              self.assertEqual(r.fragments, loc[1])
  
      def testPdbId(self):
          pdbid = "1ddf"
          for loc in self.res:
              r = Residues("\t 1ddf \t" + loc[0] + "\t\n\n\n")
              self.assertEqual(r.pdbid, pdbid)
              self.assertEqual(str(r), pdbid + " " + loc[0])
  
              r = Residues(pdbid + " " + loc[0])
              self.assertEqual(r.pdbid, pdbid)
              self.assertEqual(str(r), pdbid + " " + loc[0])
  
              r = Residues("104l A:112-113")
              self.assertEqual(r.pdbid, "104l")
              self.assertEqual(r.fragments, (("A", "112", "113"),))
  
      def testJustPdbId(self):
          r = Residues("1sds")
          self.assertEqual(r.pdbid, "1sds")
          self.assertFalse(r.fragments)
  
      def testParseError(self):
          self.assertRaises(ValueError, Residues, "09324923423hh./;,.389")
  
  
  if __name__ == "__main__":
      runner = unittest.TextTestRunner(verbosity=2)
      unittest.main(testRunner=runner)
  