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31 lines
1000 B
Python
31 lines
1000 B
Python
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import unittest
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from tests.libdrgn import drgn_test_lexer_func, Lexer
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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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