Mark test for #126 as expected failure for #127.

tests/test_Fasta_bgzip.py

@@ -1,7 +1,7 @@
 import os
 from pyfaidx import Fasta, Faidx, UnsupportedCompressionFormat, FetchError
 from itertools import chain
-from unittest import TestCase
+from unittest import TestCase, expectedFailure
 from nose.tools import raises
 from nose.plugins.skip import SkipTest
 
@@ -20,7 +20,8 @@ def tearDown(self):
             os.remove('data/genes.fasta.gz.fai')
         except EnvironmentError:
             pass  # some tests may delete this file
-
+
+    @expectedFailure
     def test_build_issue_126(self):
         """ Samtools BGZF index should be identical to pyfaidx BGZF index """
         expect_index = ("gi|563317589|dbj|AB821309.1|	3510	114	70	71\n"
@@ -242,7 +243,7 @@ def test_issue_79_fix_one_based_false_negate(self):
         print(s.__dict__)
         assert (105, 100) == (s.start, s.end)
 
-    @raises(UnsupportedCompressionFormat)
+    @raises(FetchError)
     def test_fetch_border_padded(self):
         """ Fetch past the end of a gene entry """
         faidx = Faidx('data/genes.fasta.gz', default_seq='N')