@Test(expected = MalformedExpressionException.class)
public void evalExceptOnNoArguments() throws MalformedExpressionException {
String operationExpression = "-";
PostfixEvaluator testPostfix = new PostfixEvaluator(operationExpression);
try {
testPostfix.eval();
} catch (Exception e) {
throw e;
}
}
/**
* Create a PostfixEvaluator on the given sequence of operations, and return the results of
* eval(), or catches an exception thrown by eval().
*
* @param operationExpression the sequence of operations to perform, written in RPN or postfix
* notation.
* @return the results of running PostfixEvaluator.eval() on the operationExpression.
*/
private double evalTest(String operationExpression) {
PostfixEvaluator testPostfix = new PostfixEvaluator(operationExpression);
double evalResult = 0;
try {
evalResult = testPostfix.eval();
} catch (Exception e) {
System.out.println("Unexpected exception occurred. Details:");
System.out.println("\t" + e.getClass());
System.out.println("\t" + e.getMessage());
}
return evalResult;
}