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34 lines
1.1 KiB
Python
34 lines
1.1 KiB
Python
# Copyright (c) Facebook, Inc. and its affiliates.
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# SPDX-License-Identifier: GPL-3.0+
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import unittest
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from tests.libdrgn import Lexer, drgn_test_lexer_func
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class TestLexer(unittest.TestCase):
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def test_pop(self):
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lexer = Lexer(drgn_test_lexer_func, "12345")
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for i in range(5):
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self.assertEqual(lexer.pop().kind, ord("1") + i)
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self.assertEqual(lexer.pop().kind, 0)
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def test_push(self):
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lexer = Lexer(drgn_test_lexer_func, "12345")
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tokens = []
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for i in range(4):
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tokens.append(lexer.pop())
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while tokens:
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lexer.push(tokens.pop())
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for i in range(5):
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self.assertEqual(lexer.pop().kind, ord("1") + i)
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self.assertEqual(lexer.pop().kind, 0)
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def test_peek(self):
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lexer = Lexer(drgn_test_lexer_func, "12345")
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for i in range(5):
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self.assertEqual(lexer.peek().kind, ord("1") + i)
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self.assertEqual(lexer.pop().kind, ord("1") + i)
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self.assertEqual(lexer.peek().kind, 0)
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self.assertEqual(lexer.pop().kind, 0)
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