diff options
Diffstat (limited to 'runtime/Python/tests/t008lexer.py')
-rw-r--r-- | runtime/Python/tests/t008lexer.py | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/runtime/Python/tests/t008lexer.py b/runtime/Python/tests/t008lexer.py new file mode 100644 index 0000000..f62c148 --- /dev/null +++ b/runtime/Python/tests/t008lexer.py @@ -0,0 +1,66 @@ +import antlr3 +import testbase +import unittest + +class t008lexer(testbase.ANTLRTest): + def setUp(self): + self.compileGrammar() + + + def lexerClass(self, base): + class TLexer(base): + def emitErrorMessage(self, msg): + # report errors to /dev/null + pass + + def reportError(self, re): + # no error recovery yet, just crash! + raise re + + return TLexer + + + def testValid(self): + stream = antlr3.StringStream('ffaf') + lexer = self.getLexer(stream) + + token = lexer.nextToken() + assert token.type == self.lexerModule.FOO + assert token.start == 0, token.start + assert token.stop == 0, token.stop + assert token.text == 'f', token.text + + token = lexer.nextToken() + assert token.type == self.lexerModule.FOO + assert token.start == 1, token.start + assert token.stop == 2, token.stop + assert token.text == 'fa', token.text + + token = lexer.nextToken() + assert token.type == self.lexerModule.FOO + assert token.start == 3, token.start + assert token.stop == 3, token.stop + assert token.text == 'f', token.text + + token = lexer.nextToken() + assert token.type == self.lexerModule.EOF + + + def testMalformedInput(self): + stream = antlr3.StringStream('fafb') + lexer = self.getLexer(stream) + + lexer.nextToken() + lexer.nextToken() + try: + token = lexer.nextToken() + raise AssertionError, token + + except antlr3.MismatchedTokenException, exc: + assert exc.unexpectedType == 'b', repr(exc.unexpectedType) + assert exc.charPositionInLine == 3, repr(exc.charPositionInLine) + assert exc.line == 1, repr(exc.line) + + +if __name__ == '__main__': + unittest.main() |