Question

这是我的数据提供者功能：

public function addDataProvider() {
    return [
        [
            [
                'currency' => 'eur',
                'amount' => 800,
            ],
            [
                'currency' => '12312k',
                'amount' => 1201,
            ],
            [
                'currency' => 'DKK',
                'amount' => 1200.01
            ],
            [
                'currency' => 'SEK  ',
                'amount' => 1200.01
            ]
        ],
    ];
}

这是我的测试功能：

/**
 * Test case
 * @covers AmountPerCustomer::checkAmounts()
 * @dataProvider addDataProvider
 */
public function testCheckAmountUsingCurrency($query)
{
        ....
        try {
            $ordersPerCustomer->checkAmounts($query['amount'], $query['currency'], $dateInterval);
            $this->fail("Expected Exception has not been raised.");
        }catch (\Exception $error) {
            $this->assertEquals($error->getMessage(), "Total order amount event given parameters exceed sum {$query['amount']} since {$dateInterval->format('H:i d-m-Y')} from source {$source}");
        }
}

我得到了这个成功消息：OK (1 test, 1 assertion)，我的问题为什么我只有一个断言。我的提供程序中有多个数组值。我究竟做错了什么？

谢谢！

Answer 1

作为从数据提供程序返回带有测试方法参数的数组数组的替代方法，您也可以使用生成器和yield参数数组：

public function addDataProvider() : \Generator
{
    $queries = [
        [
            'currency' => 'eur',
            'amount' => 800,
        ],
        [
            'currency' => 'dkk',
            'amount' => 1201,
        ],
        [
            'currency' => 'GBP',
            'amount' => 1201,
        ],
        [
            'currency' => 'sek',
            'amount' => 1200.01,
        ],
    ];

    foreach ($queries as $query) {
        yield [
            $query,
        ];
    }
}

然后可能更容易看到发生了什么，并且需要更少的数组嵌套。

注意

在测试中使用expectException()和expectExceptionMessage()可能更有意义：

public function testCheckAmountUsingCurrency($query)
{
    // ...

    $this->expectException(\Exception::class);
    $this->expectExceptionMessage(sprintf(
        'Total order amount event given parameters exceed sum %s since %s from source %s',
        $query['amount'],
        $dateInterval->format('H:i d-m-Y'),
        $source          
    ));

    $ordersPerCustomer->checkAmounts(
        $query['amount'], 
        $query['currency'], 
        $dateInterval
    );
}

供参考，见

https://phpunit.de/manual/current/en/writing-tests-for-phpunit.html#writing-tests-for-phpunit.exceptions

Answer 2

正如@localheinz在评论中所建议的那样，这是一个深度的阵列问题。这就是我的数组应该是这样的：

public function addDataProvider() {
    return [
        [
            [
                'currency' => 'eur',
                'amount' => 800,
            ]
        ],
        [
            [
                'currency' => 'dkk',
                'amount' => 1201,
            ],
        ],
        [
            [
                'currency' => 'GBP',
                'amount' => 1201,
            ],
        ],
        [
            [
                'currency' => 'sek',
                'amount' => 1200.01,
            ],
        ],
    ];
}

数据提供者在phpunit中发布

2 个答案:

注意