add missing weight matrix test file

modules/seq/alg/tests/test_weight_matrix.py

+import unittest
+from ost import *
+from ost import settings
+from ost import seq
+
+class TestWeightMatrix(unittest.TestCase):
+  
+  def test_GetWeight(self):
+    mat = seq.alg.BLOSUM62
+    self.assertEqual(mat.GetWeight('A', 'A'), 4)
+    self.assertEqual(mat.GetWeight('A', 'B'), -2)
+    self.assertEqual(mat.GetWeight('a', 'A'), 4)
+    self.assertEqual(mat.GetWeight('A', 'b'), -2)
+    self.assertEqual(mat.GetWeight('A', '?'), 0)
+    self.assertEqual(mat.GetWeight('E', '?'), 0)
+    self.assertEqual(mat.GetWeight('Y', '?'), 0)
+    self.assertEqual(mat.GetWeight('?', 'A'), 0)
+    self.assertEqual(mat.GetWeight('?', 'E'), 0)
+    self.assertEqual(mat.GetWeight('?', 'Y'), 0)
+    self.assertEqual(mat.GetWeight('?', 'y'), 0)
+    
+    
+  def test_SetWeight(self):
+    mat = seq.alg.BLOSUM62
+    self.assertEqual(mat.GetWeight('A', 'A'), 4)
+    mat.SetWeight('A', 'A', -1)
+    self.assertEqual(mat.GetWeight('A', 'A'), -1)
+    
+    self.assertEqual(mat.GetWeight('A', 'B'), -2)
+    mat.SetWeight('A', 'B', 10)
+    self.assertEqual(mat.GetWeight('A', 'B'), 10)
+    
+    self.assertEqual(mat.GetWeight('E', '?'), 0)
+    mat.SetWeight('E', '?', 10)
+    self.assertEqual(mat.GetWeight('E', '?'), 0)
+    
+    self.assertEqual(mat.GetWeight('?', 'E'), 0)
+    mat.SetWeight('?', 'E', 10)
+    self.assertEqual(mat.GetWeight('?', 'E'), 0)
+
+if __name__ == "__main__":
+  try:
+    unittest.main()
+  except Exception, e:
+    print e