3040     def DoTest(self, lines):  function
3050     DoTest(self, ['using namespace foo;'])
3051     DoTest(self, ['', '', '', 'using namespace foo;'])
3052     DoTest(self, ['// hello', 'using namespace foo;'])
3055     def DoTest(self, data, is_missing_eof):  function
3066     DoTest(self, '// Newline\n// at EOF\n', False)
3067     DoTest(self, '// No newline\n// at EOF', True)
3070     def DoTest(self, raw_bytes, has_invalid_utf8):  function
3084     DoTest(self, 'Hello world\n', False)
3085     DoTest(self, '\xe9\x8e\xbd\n', False)
3086     DoTest(self, '\xe9x\x8e\xbd\n', True)
3089     DoTest(self, '\xef\xbf\xbd\n', True)