assertEquals(eval(t, ""), "");
assertEquals(eval(t, " "), "");
}
public void testUPPER() throws Exception {
UPPER u = new UPPER();
assertEquals(eval(u, "asdf"), "ASDF");
assertEquals(eval(u, true), "TRUE");
assertEquals(eval(u, 1), "1");
assertException("upper(1,1)");
assertResult("upper({1,2})", ExprError.VALUE);