/**
* Tests hist() method.
*
* @author chuna
*/
@SuppressWarnings("serial")
@Test
public void testHist() {
Calculator.clear();
String expectedAns = "There is no history to display.";
assert (Calculator.hist().equals(expectedAns));
List<Integer> l =
new ArrayList<Integer>() {
{
add(10);
add(5);
add(2);
}
};
Calculator.add(l);
Calculator.sub(l);
Calculator.mult(l);
try {
Calculator.div(l);
} catch (Exception e) {
assert (false);
}
expectedAns =
"1 | div | 10 5 2 | 1\n"
+ "2 | mult | 10 5 2 | 100\n"
+ "3 | sub | 10 5 2 | 3\n"
+ "4 | add | 10 5 2 | 17";
assert (Calculator.hist().equals(expectedAns));
}