@Test
 public void testSymbol() {
   final IREXP libraryREXP =
       PlainJavaConnectionTestSuiteContext.getInstance()
           .acquireRConnection()
           .eval(
               new StringBuffer()
                   .append("try(")
                   .append("as.symbol(\"x\")")
                   .append(")")
                   .toString());
   Assert.assertNotNull(libraryREXP);
   Assert.assertEquals(IREXP.XT_SYM, libraryREXP.getType());
   Assert.assertEquals("x", libraryREXP.asSymbol().asString());
 }