2685
2685
set(index.iter_parents(['tip'])))
2686
2686
self.assertEqual(set(),
2687
2687
set(index.iter_parents([])))
2690
class TestPackKnits(KnitTests):
2691
"""Tests that use a _PackAccess and KnitGraphIndex."""
2693
def test_get_data_stream_packs_ignores_pack_overhead(self):
2694
# Packs have an encoding overhead that should not be included in the
2695
# 'size' field of a data stream, because it is not returned by the
2696
# raw_reading functions - it is why index_memo's are opaque, and
2697
# get_data_stream was abusing this.
2698
packname = 'test.pack'
2699
transport = self.get_transport()
2700
def write_data(bytes):
2701
transport.append_bytes(packname, bytes)
2702
writer = pack.ContainerWriter(write_data)
2704
index = InMemoryGraphIndex(2)
2705
knit_index = KnitGraphIndex(index, add_callback=index.add_nodes,
2707
indices = {index:(transport, packname)}
2708
access = _PackAccess(indices, writer=(writer, index))
2709
k = KnitVersionedFile('test', get_transport('.'),
2710
delta=True, create=True, index=knit_index, access_method=access)
2711
# insert something into the knit
2712
k.add_lines('text-1', [], ["foo\n"])
2713
# get a data stream for it
2714
stream = k.get_data_stream(['text-1'])
2715
# if the stream has been incorrectly assembled, we will get a short read
2716
# reading from the stream (as streams have no trailer)
2717
expected_length = stream[1][0][2]
2718
# we use -1 to do the read, so that if a trailer is added this test
2719
# will fail and we'll adjust it to handle that case correctly, rather
2720
# than allowing an over-read that is bogus.
2721
self.assertEqual(expected_length, len(stream[2](-1)))
added
removed
bzrlib/tests/test_knit.py
