121 lines
3.2 KiB
Python
121 lines
3.2 KiB
Python
import antlr3
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import testbase
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import unittest
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import os
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import sys
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from io import StringIO
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import textwrap
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class t012lexerXML(testbase.ANTLRTest):
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def setUp(self):
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self.compileGrammar('t012lexerXMLLexer.g')
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def lexerClass(self, base):
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class TLexer(base):
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def emitErrorMessage(self, msg):
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# report errors to /dev/null
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pass
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def reportError(self, re):
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# no error recovery yet, just crash!
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raise re
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return TLexer
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def testValid(self):
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inputPath = os.path.splitext(__file__)[0] + '.input'
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with open(inputPath) as f:
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data = f.read()
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stream = antlr3.StringStream(data)
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lexer = self.getLexer(stream)
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while True:
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token = lexer.nextToken()
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if token.type == self.lexerModule.EOF:
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break
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output = lexer.outbuf.getvalue()
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outputPath = os.path.splitext(__file__)[0] + '.output'
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with open(outputPath) as f:
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testOutput = f.read()
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self.assertEqual(output, testOutput)
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def testMalformedInput1(self):
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input = textwrap.dedent("""\
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<?xml version='1.0'?>
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<document d>
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</document>
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""")
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stream = antlr3.StringStream(input)
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lexer = self.getLexer(stream)
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try:
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while True:
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token = lexer.nextToken()
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# Should raise NoViableAltException before hitting EOF
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if token.type == antlr3.EOF:
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self.fail()
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except antlr3.NoViableAltException as exc:
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self.assertEqual(exc.unexpectedType, '>')
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self.assertEqual(exc.charPositionInLine, 11)
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self.assertEqual(exc.line, 2)
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def testMalformedInput2(self):
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input = textwrap.dedent("""\
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<?tml version='1.0'?>
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<document>
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</document>
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""")
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stream = antlr3.StringStream(input)
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lexer = self.getLexer(stream)
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try:
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while True:
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token = lexer.nextToken()
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# Should raise NoViableAltException before hitting EOF
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if token.type == antlr3.EOF:
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self.fail()
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except antlr3.MismatchedSetException as exc:
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self.assertEqual(exc.unexpectedType, 't')
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self.assertEqual(exc.charPositionInLine, 2)
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self.assertEqual(exc.line, 1)
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def testMalformedInput3(self):
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input = textwrap.dedent("""\
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<?xml version='1.0'?>
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<docu ment attr="foo">
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</document>
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""")
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stream = antlr3.StringStream(input)
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lexer = self.getLexer(stream)
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try:
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while True:
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token = lexer.nextToken()
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# Should raise NoViableAltException before hitting EOF
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if token.type == antlr3.EOF:
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self.fail()
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except antlr3.NoViableAltException as exc:
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self.assertEqual(exc.unexpectedType, 'a')
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self.assertEqual(exc.charPositionInLine, 11)
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self.assertEqual(exc.line, 2)
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if __name__ == '__main__':
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unittest.main()
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