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68 lines
2.0 KiB
68 lines
2.0 KiB
#!/usr/bin/env python
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#
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# Copyright (C) 2018 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""This file contains unit tests for utils."""
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import unittest
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from vts.utils.python.library.elf import utils as elf_utils
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# SLEB input data are generated by:
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# $ llvm-mc -filetype=obj <<EOF | obj2yaml | grep 'Content:' | awk '{print $2}'
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# > .sleb128 15
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# > .sleb128 -15
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# > EOF
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# Test data: SLEB128 encoded byte stream
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_SLEB_INPUT_DATA = bytes(bytearray.fromhex('0F71FF00800180800280807EFFFFFFFF'
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'0F8180808070FFFFFFFFFFFFFFFFFF00'
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'8180808080808080807F808080808080'
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'8080807F'))
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# Reference output: [(value, length)]
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_SLEB_OUTPUT_DATA = [
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(0xF, 1),
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(-0xF, 1),
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(0x7F, 2),
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(0x80, 2),
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(0x8000, 3),
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(-0x8000, 3),
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(0xFFFFFFFF, 5),
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(-0xFFFFFFFF, 5),
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(0x7FFFFFFFFFFFFFFF, 10),
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(-0x7FFFFFFFFFFFFFFF, 10),
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(-0x8000000000000000, 10),
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]
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class UtilsTest(unittest.TestCase):
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"""Unit tests for vts.utils.python.library.elf.utils."""
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def testDecodeSLEB128(self):
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"""Test if DecodeSLEB128 decodes correctly."""
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result = []
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cur = 0
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while cur < len(_SLEB_INPUT_DATA):
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val, num = elf_utils.DecodeSLEB128(_SLEB_INPUT_DATA, cur)
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cur += num
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result.append((val, num))
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self.assertEqual(result, _SLEB_OUTPUT_DATA)
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if __name__ == '__main__':
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unittest.main()
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