public function testDivide()
{
$calc = new Calculator();
$quotient = $calc->divide(10, 2);
$this->assertEquals(5, $quotient);
//check if 10/2 is equal to 5
}
/**
* @test
*/
public function shouldDivideTwoNumbers()
{
// given
$calculator = new \Calculator();
// when
$result = $calculator->divide(10, 5);
// then
$this->assertEquals(2, $result);
}
/**
* @test
* @expectedException InvalidArgumentException
*/
public function shouldThrowExceptionForDivisionByZero()
{
// given
$calculator = new \Calculator();
// when
$calculator->divide(10, 0);
// then
$this->fail('exception should be thrown');
}
/**
* @test
*/
public function shouldDivideTwoNumbers()
{
// given
$a = rand(0, 100);
$b = rand(1, 100);
$calculator = new \Calculator();
// when
$result = $calculator->divide($a, $b);
// then
$this->assertEquals(round($a / $b), $result);
}
<?php
//set defaults
$number1 = 0;
$number2 = 0;
$result = 0;
//check the post
if (isset($_POST['submit'])) {
//get the values
$number1 = (int) strip_tags(trim($_POST['number1']));
$number2 = (int) strip_tags(trim($_POST['number2']));
$result = (int) strip_tags(trim($_POST['result']));
//get result from model (send the values)
$calc = new Calculator($number1, $number2, $result);
}
if ($_POST['plus']) {
$result = $calc->add($number1, $number2);
} else {
if ($_POST['minus']) {
$result = $calc->minus($number1, $number2);
} else {
if ($_POST['times']) {
$result = $calc->mutiply($number1, $number2);
} else {
if ($_POST['divide']) {
$result = $calc->divide($number1, $number2);
}
}
}
}
/**
* @expectedException \InvalidArgumentException
* @expectedExceptionMessage Cannot divide by zero!
*/
public function testThrowsInvalidArgumentExceptionIfTryingToDivideByZero()
{
$calculator = new Calculator();
$calculator->divide(5, 0);
}
public function __construct($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>
