ArgumentCountError：函数 phpunit 的参数太少

Question

我正在尝试使用创建一些编程测试phpUnit。我需要使用数据提供程序，但每次尝试时，它都会引发错误。我什至使用 文档中给出的示例phpUnit。

 /**
 * @dataProvider additionWithNonNegativeNumbersProvider
 */
public function testAdd($a, $b, $expected)
{
    $this->assertSame($expected, $a + $b);
}

public function additionWithNonNegativeNumbersProvider()
{
    return [
        [0, 1, 1],
        [1, 0, 1],
        [1, 1, 3]
    ];
}

我期望输出是：

There was 1 failure:
1) DataTest::testAdd with data set #3 (1, 1, 3)
Failed asserting that 2 is identical to 3.

但它是：

ArgumentCountError : Too few arguments to function controllerTests::testAdd(), 0 passed in phar://C:/xampp/htdocs/2019-1-qa-grupo1/myss/Tests/phpunit-8.1.2.phar/phpunit/Framework/TestCase.php on line 1172 and exactly 3 expected
 C:\xampp\htdocs\2019-1-qa-grupo1\myss\Tests\controllerTests.php:55

Answer 1

您需要将可选参数传递给父构造函数。

如果你的测试类中有这个：

<?php
public function __construct() {
    // Some constructor code.
}

将其更改为：

<?php
public function __construct($name = null, array $data = [], $dataName = '') {
    parent::__construct($name, $data, $dataName);
    // Some constructor code.
}