@Test
public void shouldSupportSubstraction() {
assertEquals("Should support substraction", -2, calc.evaluate("1 3 -"), 0);
}
@Test
public void shouldSupportDivision() {
assertEquals("Should support division", 2, calc.evaluate("4 2 /"), 0);
}
@Test
public void shouldSupportMultiplication() {
assertEquals("Should support multiplication", 3, calc.evaluate("1 3 *"), 0);
}
@Test
public void shouldSupportAddition() {
assertEquals("Should support addition", 4, calc.evaluate("1 3 +"), 0);
}
@Test
public void shouldParseFloatNumbers() {
assertEquals("Should parse float numbers", 3.5, calc.evaluate("1 2 3.5"), 0);
}
@Test
public void shouldParseNumbers() {
assertEquals("Should parse numbers", 3, calc.evaluate("1 2 3"), 0);
}
@Test
public void shouldWorkWithEmptyString() {
assertEquals("Should work with empty string", 0, calc.evaluate(""), 0);
}