tests: add utility function 'oid_to_hex'

test/test_blob.py

@@ -29,7 +29,6 @@
 
 from __future__ import absolute_import
 from __future__ import unicode_literals
-from binascii import b2a_hex
 import unittest
 
 import pygit2
@@ -46,7 +45,7 @@ class BlobTest(utils.BareRepoTestCase):
     def test_read_blob(self):
         blob = self.repo[BLOB_SHA]
         self.assertEqual(blob.hex, BLOB_SHA)
-        sha = b2a_hex(blob.oid).decode('ascii')
+        sha = utils.oid_to_hex(blob.oid)
         self.assertEqual(sha, BLOB_SHA)
         self.assertTrue(isinstance(blob, pygit2.Blob))
         self.assertEqual(pygit2.GIT_OBJ_BLOB, blob.type)

test/test_index.py

@@ -29,7 +29,6 @@
 
 from __future__ import absolute_import
 from __future__ import unicode_literals
-from binascii import b2a_hex
 import os
 import unittest
 
@@ -102,7 +101,7 @@ class IndexTest(utils.RepoTestCase):
         self.assertEqual(len(index), 1)
         # Test read-write returns the same oid
         oid = index.write_tree()
-        oid = b2a_hex(oid).decode('ascii')
+        oid = utils.oid_to_hex(oid)
         self.assertEqual(oid, tree_oid)
         # Test the index is only modified in memory
         index.read()
@@ -111,7 +110,7 @@ class IndexTest(utils.RepoTestCase):
 
     def test_write_tree(self):
         oid = self.repo.index.write_tree()
-        sha = b2a_hex(oid).decode('ascii')
+        sha = utils.oid_to_hex(oid)
         self.assertEqual(sha, 'fd937514cb799514d4b81bb24c5fcfeb6472b245')
 
     def test_iter(self):

test/test_treebuilder.py

@@ -29,7 +29,6 @@
 
 from __future__ import absolute_import
 from __future__ import unicode_literals
-from binascii import b2a_hex
 import os
 import unittest
 

test/utils.py

@@ -27,6 +27,7 @@
 
 """Test utilities for libgit2."""
 
+from binascii import b2a_hex
 import os
 import shutil
 import stat
@@ -40,6 +41,10 @@ import pygit2
 __author__ = 'dborowitz@google.com (Dave Borowitz)'
 
 
+def oid_to_hex(oid):
+    return b2a_hex(oid).decode('ascii')
+
+
 def rmtree(path):
     """In Windows a read-only file cannot be removed, and shutil.rmtree fails.
     So we implement our own version of rmtree to address this issue.