private void parseShouldFail(String expr) {
try {
LabelExpression.parseExpression(expr);
fail(expr + " should fail to parse");
} catch (ANTLRException e) {
// expected
}
}
private void parseAndVerify(String expected, String expr) throws ANTLRException {
assertEquals(expected, LabelExpression.parseExpression(expr).getName());
}