@Test
public void testDivide() {
Calculator calc = new Calculator();
calc.divide(0);
// Testing dividing by 0
assertEquals(calc.getTotal(), 0);
calc.add(12);
calc.divide(6);
// The total value should be 2 after adding 12 then dividing by 6
assertEquals(calc.getTotal(), 2);
}
@Test
public void divideで3と2の除算結果が取得できる() {
Calculator calc = new Calculator();
float expected = 1.5f;
float actual = calc.divide(3, 2);
assertThat(actual, is(expected));
}
@Test
public void testGetTotal() {
Calculator calc = new Calculator();
calc.add(4);
calc.subtract(1);
calc.multiply(6);
calc.divide(3);
// The total value should be 6
assertEquals(calc.getTotal(), 6);
}
@Test
public void testGetHistory() {
Calculator calc = new Calculator();
assertEquals(calc.getHistory(), "" + 0);
calc.add(14);
calc.divide(2);
calc.multiply(3);
calc.subtract(6);
// Testing the history method
assertEquals("0 + 14 / 2 * 3 - 6", calc.getHistory());
}
@Test
public void testDivide() {
calculator.add(8);
calculator.divide(2);
assertEquals(4, calculator.getResult());
}
@Test(expected = IllegalArgumentException.class)
public void divideで5と0のときIllegalArgumentExceptionを送出する() {
Calculator calc = new Calculator();
calc.divide(5, 0);
}
@Test(expected = Exception.class)
public void divisionWithException() {
// divide by zero
calculator.divide(42, 0);
}
@Test
public void testDivide() throws Exception {
assertEquals(4d, calculator.divide(20d, 5d), 0);
}