public void testSubstract() throws Exception {
assertEquals(1d, mCal.substract(5d, 4d), 0);
}
@Test
public void testSubstract() {
calculator.add(10);
calculator.substract(2);
assertEquals(8, calculator.getResult());
}
@Test
public void subtraction() {
assertEquals(9, calculator.substract(12, 3));
}
