public function testSubtract()
{
$calc = new Calculator();
$difference = $calc->subtract(5, 2);
$this->assertEquals(3, $difference);
//check if 5 - 2 is equal to 3
}
/**
* @test
*/
public function shouldSubtractTwoNumbers()
{
// given
$calculator = new \Calculator();
// when
$result = $calculator->subtract(3, 2);
// then
$this->assertEquals(1, $result);
}
/**
* @test
*/
public function shouldSubtractTwoNumbers()
{
// given
$a = rand(0, 100);
$b = rand(0, 100);
$calculator = new \Calculator();
// when
$result = $calculator->subtract($a, $b);
// then
$this->assertEquals($a - $b, $result);
}
public function __construct($a, $b)
{
$this->_a = $a;
$this->_b = $b;
}
public function add()
{
return $this->_a + $this->_b;
}
public function subtract()
{
return $this->_a - $this->_b;
}
public function multiply()
{
return $this->_a * $this->_b;
}
public function divide()
{
return $this->_a / $this->_b;
}
}
$mycalc = new Calculator(12, 6);
echo $mycalc->add() . "<br>";
// Displays 18
echo $mycalc->multiply() . "<br>";
// Displays 72
echo $mycalc->subtract() . "<br>";
// Displays 6
echo $mycalc->divide() . "<br>";
// Displays 2
{
$this->_val1 = $val1;
$this->_val2 = $val2;
}
public function add()
{
return $this->_val1 + $this->_val2;
}
public function subtract()
{
return $this->_val1 - $this->_val2;
}
public function multiply()
{
return $this->_val1 * $this->_val2;
}
public function divide()
{
return $this->_val1 / $this->_val2;
}
}
$calc = new Calculator(3, 4);
echo "<p>3 + 4 = " . $calc->add() . "</p>";
echo "<p>3 - 4 = " . $calc->subtract() . "</p>";
echo "<p>3 * 4 = " . $calc->multiply() . "</p>";
echo "<p>3 / 4 = " . $calc->divide() . "</p>";
?>
</body>
</html>
