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phpunit数据供给器的错误数据定位方式

发布时间：2021-09-13 10:55:39编辑：雪饮阅读（）

 像我们上篇中DataTest.php:

<?php declare(strict_types=1);
use PHPUnit\Framework\TestCase;

final class DataTest extends TestCase
{
    /**
     * @dataProvider additionProvider
     */
    public function testAdd(int $a, int $b, int $expected): void
    {
        $this->assertSame($expected, $a + $b);
    }

    public function additionProvider(): array
    {
        return [
            [0, 0, 0],
            [0, 1, 1],
            [1, 0, 1],
            [1, 1, 3]
        ];
    }
}
运行结果：
C:\Users\Administrator>D:\phpstudy_pro\Extensions\php\php7.3.4nts\php.exe D:\phpstudy_pro\Extensions\php\php7.3.4nts\phpunit-9.5.8.phar C:\Users\Administrator\PhpstormProjects\untitled\DataTest.php
PHPUnit 9.5.8 by Sebastian Bergmann and contributors.
 
...F                                                                4 / 4 (100%)
 
Time: 00:00.004, Memory: 20.00 MB
 
There was 1 failure:
 
1) DataTest::testAdd with data set #3 (1, 1, 3)
Failed asserting that 2 is identical to 3.
 
C:\Users\Administrator\PhpstormProjects\untitled\DataTest.php:11
 
FAILURES!
Tests: 4, Assertions: 4, Failures: 1.
可以看到这里将错误定位在数据索引3上面。
那么比如说我将数据结构修改下：DataTest.php：

<?php declare(strict_types=1);
use PHPUnit\Framework\TestCase;

final class DataTest extends TestCase
{
    /**
     * @dataProvider additionProvider
     */
    public function testAdd(int $a, int $b, int $expected): void
    {
        $this->assertSame($expected, $a + $b);
    }

    public function additionProvider(): array
    {
        return [
            [0, 0, 0],
            [0, 1, 1],
            [1, 1, 3],
            [1, 0, 1]
        ];
    }
}

像是这样，那么运行结果中，错误定位又到索引2上面了

C:\Users\Administrator>D:\phpstudy_pro\Extensions\php\php7.3.4nts\php.exe D:\phpstudy_pro\Extensions\php\php7.3.4nts\phpunit-9.5.8.phar C:\Users\Administrator\PhpstormProjects\untitled\DataTest.php
PHPUnit 9.5.8 by Sebastian Bergmann and contributors.
 
..F.                                                                4 / 4 (100%)
 
Time: 00:00.005, Memory: 20.00 MB
 
There was 1 failure:
 
1) DataTest::testAdd with data set #2 (1, 1, 3)
Failed asserting that 2 is identical to 3.
 
C:\Users\Administrator\PhpstormProjects\untitled\DataTest.php:11
 
FAILURES!
Tests: 4, Assertions: 4, Failures: 1.
这就证明了数据供给器中错误定位是根据索引来的（一般情况下）。