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Add a simple test for the checksum routine.

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david reid
2015-03-23 23:02:05 +00:00
parent bd80f270b6
commit dd3cc71bb0
1 changed files with 9 additions and 1 deletions
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10
tests/utils_test.py
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@@ -1,6 +1,7 @@
import unittest
import struct
from zttf.utils import fixed_version, binary_search_parameters
from zttf.utils import fixed_version, binary_search_parameters, ttf_checksum
class TestUtils(unittest.TestCase):
@@ -22,3 +23,10 @@ class TestUtils(unittest.TestCase):
}
for n, result in cases.items():
self.assertEqual(binary_search_parameters(n), result)
def test_checksum(self):
data = struct.pack(">12I", *range(0, 12))
self.assertEqual(len(data), 48)
self.assertEqual(ttf_checksum(data), 66)
self.assertEqual(ttf_checksum(struct.pack(">12I", *range(1000, 13000, 1000))), 78000)
self.assertEqual(ttf_checksum(struct.pack(">512I", *range(1024, 1024 * 2048, 4096))), 0x1FF80000)