PHP如何测试exception
2021-02-23 本文已影响0人
芒鞋儿
- 例子程序：
<?php
namespace App\Libraries;
use InvalidArgumentException;
class Calculator
{
public function add($firstnumber, $secondnumber)
{
if( !is_numeric($firstnumber) || !is_numeric($secondnumber)){
throw new \InvalidArgumentException;
}
return $firstnumber + $secondnumber;
}
}
- 测试例子：
<?php
use App\Libraries\Calculator;
class CalculatorTest extends PHPUnit\Framework\TestCase
{
public function setUp(): void
{
$this->calculator = new Calculator;
}
public function inputNumbers()
{
return [
[2,2,4],
[2.5,2.5,5],
[-3,1,-2],
[-9,-9,-18]
];
}
/**
* @dataProvider inputNumbers
*/
public function testAddNumbers($x,$y,$sum)
{
$this->assertEquals($sum, $this->calculator->add($x,$y));
}
/**
* @expectedException \InvalidArgumentException
*/
public function testThrowExceptionIfNonNumbericIsPassed()
{
$this->expectException(InvalidArgumentException::class);
$calc = new Calculator;
$calc->add('a','b');
}
}
注意两处：
- 在注释中写入expectedException 叫做
注解方式测试exception （use annotation for setting up your test to listen to the exception.） - 在正式测试代码执行之前要加入 $this->expectException(InvalidArgumentException::class);
参考：
