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59 lines
1.7 KiB
59 lines
1.7 KiB
4 months ago
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import antlr3
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import testbase
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import unittest
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class t017parser(testbase.ANTLRTest):
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def setUp(self):
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self.compileGrammar()
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def parserClass(self, base):
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class TestParser(base):
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def __init__(self, *args, **kwargs):
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base.__init__(self, *args, **kwargs)
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self.reportedErrors = []
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def emitErrorMessage(self, msg):
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self.reportedErrors.append(msg)
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return TestParser
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def testValid(self):
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cStream = antlr3.StringStream("int foo;")
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lexer = self.getLexer(cStream)
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tStream = antlr3.CommonTokenStream(lexer)
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parser = self.getParser(tStream)
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parser.program()
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assert len(parser.reportedErrors) == 0, parser.reportedErrors
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def testMalformedInput1(self):
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cStream = antlr3.StringStream('int foo() { 1+2 }')
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lexer = self.getLexer(cStream)
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tStream = antlr3.CommonTokenStream(lexer)
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parser = self.getParser(tStream)
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parser.program()
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# FIXME: currently strings with formatted errors are collected
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# can't check error locations yet
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assert len(parser.reportedErrors) == 1, parser.reportedErrors
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def testMalformedInput2(self):
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cStream = antlr3.StringStream('int foo() { 1+; 1+2 }')
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lexer = self.getLexer(cStream)
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tStream = antlr3.CommonTokenStream(lexer)
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parser = self.getParser(tStream)
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parser.program()
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# FIXME: currently strings with formatted errors are collected
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# can't check error locations yet
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assert len(parser.reportedErrors) == 2, parser.reportedErrors
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if __name__ == '__main__':
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unittest.main()
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