Move the last_bytes util method to libvirt

The only user of this util method is libvirt, so it should live there.
This is a precursor to re-writing its single caller to use privsep to
read bytes instead of chown'ing files.

Change-Id: Ice5cc70eeef3fbeee9a1a0ec0daa801c6f74480c

1 files changed, 0 insertions, 27 deletions

diff --git a/nova/tests/unit/test_utils.py b/nova/tests/unit/test_utils.py
index 60b40c3c6b..bd6a05a98b 100644
--- a/nova/tests/unit/test_utils.py
+++ b/nova/tests/unit/test_utils.py
@@ -779,33 +779,6 @@ class MkfsTestCase(test.NoDBTestCase):
             '/my/swap/block/dev', run_as_root=False)
 
 
-class LastBytesTestCase(test.NoDBTestCase):
-    """Test the last_bytes() utility method."""
-
-    def setUp(self):
-        super(LastBytesTestCase, self).setUp()
-        self.f = six.BytesIO(b'1234567890')
-
-    def test_truncated(self):
-        self.f.seek(0, os.SEEK_SET)
-        out, remaining = utils.last_bytes(self.f, 5)
-        self.assertEqual(out, b'67890')
-        self.assertGreater(remaining, 0)
-
-    def test_read_all(self):
-        self.f.seek(0, os.SEEK_SET)
-        out, remaining = utils.last_bytes(self.f, 1000)
-        self.assertEqual(out, b'1234567890')
-        self.assertFalse(remaining > 0)
-
-    def test_seek_too_far_real_file(self):
-        # StringIO doesn't raise IOError if you see past the start of the file.
-        with tempfile.TemporaryFile() as flo:
-            content = b'1234567890'
-            flo.write(content)
-            self.assertEqual((content, 0), utils.last_bytes(flo, 1000))
-
-
 class MetadataToDictTestCase(test.NoDBTestCase):
     def test_metadata_to_dict(self):
         self.assertEqual(utils.metadata_to_dict(