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1import sys
2import unittest
3
4import antlr3
5
6
7class TestBaseRecognizer(unittest.TestCase):
8    """Tests for BaseRecognizer class"""
9
10    def testGetRuleInvocationStack(self):
11        """BaseRecognizer._getRuleInvocationStack()"""
12
13        rules = antlr3.BaseRecognizer._getRuleInvocationStack(__name__)
14        self.failUnlessEqual(
15            rules,
16            ['testGetRuleInvocationStack']
17            )
18
19
20class TestTokenSource(unittest.TestCase):
21    """Testcase to the antlr3.TokenSource class"""
22
23
24    def testIteratorInterface(self):
25        """TokenSource.next()"""
26
27        class TrivialToken(object):
28            def __init__(self, type):
29                self.type = type
30
31        class TestSource(antlr3.TokenSource):
32            def __init__(self):
33                self.tokens = [
34                    TrivialToken(1),
35                    TrivialToken(2),
36                    TrivialToken(3),
37                    TrivialToken(4),
38                    TrivialToken(antlr3.EOF),
39                    ]
40
41            def nextToken(self):
42                return self.tokens.pop(0)
43
44
45        src = TestSource()
46        tokens = []
47        for token in src:
48            tokens.append(token.type)
49
50        self.failUnlessEqual(tokens, [1, 2, 3, 4])
51
52
53
54class TestLexer(unittest.TestCase):
55
56    def testInit(self):
57        """Lexer.__init__()"""
58
59        class TLexer(antlr3.Lexer):
60            api_version = 'HEAD'
61
62        stream = antlr3.StringStream('foo')
63        TLexer(stream)
64
65
66if __name__ == "__main__":
67    unittest.main(testRunner=unittest.TextTestRunner(verbosity=2))
68