<?php
class Calculator
{
public static function add($a, $b)
{
$b)
{
return $a + $b;
}
$b;
}
public static function divide($a, $b)
{
$b)
{
return $a / $b;
$b;
}
}
use PHPUnit\Framework\TestCase;
class CalculatorTest extends TestCase
{
public function testAddition(): void
{
// Positive Test Case 1: add() method
$a = 5;
$b = 10;
$expectedSum = 15;
$sum = Calculator::add($a, $b);
$this->assertEquals($expectedSum, $sum);
}
public function testDivision(): void
{
// Positive Test Case 2: divide() method
$a = 20;
$b = 4;
$expectedQuotient = 5;
$quotient = Calculator::divide($a, $b);
$this->assertEquals($expectedQuotient, $quotient);
}
public function testAdditionWithInvalidInput(): void
{
// Negative Test Case 1: add() method with invalid input
$a = "abc";
$b = 10;
$this->expectException(TypeError::class);
Calculator::add($a, $b);
}
public function testDivisionByZero(): void
{
// Negative Test Case 2: divide() method with division by zero
$a = 10;
$b = 0;
$this->expectException(DivisionByZeroError::class);
Calculator::divide($a, $b);
}
}
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