/** * Tests reuse() method. * * @author chuna */ @SuppressWarnings("serial") @Test public void testReuse() { Calculator.clear(); 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); } assert (Calculator.reuse(4, null) == 17); // add assert (Calculator.reuse(3, null) == 3); // sub assert (Calculator.reuse(2, null) == 100); // mult assert (Calculator.reuse(1, null) == 1); // div // Now for the no spot in history found Calculation calc = new Calculation("add"); System.out.println("History size is " + Calculator.getHistory().size()); assert (Calculator.reuse(5, calc) == 0); // add id = 0 calc = new Calculation("sub"); assert (Calculator.reuse(6, calc) == 0); // sub id = 0 calc = new Calculation("mult"); assert (Calculator.reuse(0, calc) == 1); // mult id = 1 calc = new Calculation("div"); assert (Calculator.reuse(-1, calc) == 1); // div id = 1 }
/** * Tests clear() method. * * @author kuczynskij */ @SuppressWarnings("serial") @Test public void testClear() { List<Integer> l = new ArrayList<Integer>() { { add(4); add(2); add(3); } }; Calculator.add(l); Calculator.sub(l); Calculator.add(l); assert (Calculator.getHistory().size() > 0); Calculator.clear(); assert (Calculator.getHistory().size() == 0); }