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Add some tests for deltification.

Changeset 63d8732b59ac…

Parent 0d8a2187d53d…

by Jelmer Vernooij

Changes to 2 files · Browse files at 63d8732b59ac Showing diff from parent 0d8a2187d53d Diff from another changeset...

Change 1 of 1 Show Entire File dulwich/​pack.py Stacked
 
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@@ -1167,6 +1167,8 @@
    :param objects: Objects to deltify   :param window: Window size + :return: Iterator over type_num, object id, delta_base, content + delta_base is None for full text entries   """   # Build a list of objects ordered by the magic Linus heuristic   # This helps us find good objects to diff against us
Change 1 of 3 Show Entire File dulwich/​tests/​test_pack.py Stacked
 
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@@ -33,6 +33,7 @@
  GitFile,   )  from dulwich.objects import ( + Blob,   hex_to_sha,   sha_to_hex,   Tree, @@ -44,6 +45,7 @@
  ThinPackData,   apply_delta,   create_delta, + deltify_pack_objects,   load_pack_index,   read_zlib_chunks,   write_pack_header, @@ -536,3 +538,25 @@
    def test_decompress_buffer_size_4(self):   self._do_decompress_test(4) + + +class DeltifyTests(TestCase): + + def test_empty(self): + self.assertEquals([], list(deltify_pack_objects([]))) + + def test_single(self): + b = Blob.from_string("foo") + self.assertEquals( + [(b.type_num, b.sha().digest(), None, b.as_raw_string())], + list(deltify_pack_objects([(b, "")]))) + + def test_simple_delta(self): + b1 = Blob.from_string("a" * 101) + b2 = Blob.from_string("a" * 100) + delta = create_delta(b1.as_raw_string(), b2.as_raw_string()) + self.assertEquals([ + (b1.type_num, b1.sha().digest(), None, b1.as_raw_string()), + (b2.type_num, b2.sha().digest(), b1.sha().digest(), delta) + ], + list(deltify_pack_objects([(b1, ""), (b2, "")])))