php 中的 addItem 单元测试

Question

我正在尝试测试是否可以将商品添加到我的购物清单中。我不确定我哪里出错了，我得到的错误是：

ArgumentCountError : Too few arguments to function Tests\Unit\Entities\ShoppingListTest::testAddItem(), 0 passed in

哪个让我感到困惑，因为我在需要的地方传递了参数？我是单元测试的新手，只需要一些指导。我也意识到我可能选择了错误的断言来调用，所以任何关于它的输入都会有所帮助！这是我的测试：

 public function testAddItem(string $name): void
    {
        //Arrange: Given an item to add to the shopping list
        $items = [new ShoppingItem('lettuce')];
        $list = new ShoppingList('my-groceries', $items);

        //Act: Add the item to the list
         $list->addItem($name);

        //Assert: Check to see if the item was added to the list
        $this->assertContains($items, $list, 'Does not contain lettuce.');

    }

这是我的购物清单 class，其中包含我正在测试的功能：

class ShoppingList implements \iterable
{
    /**
     * @var string
     */
    private string $name;
    /**
     * @var ShoppingItem[]
     */
    private array $items;

    public function __construct(string $name, array $items)
    {
        $this->name = $name;
        foreach($items as $item) {
            if(!$item instanceof ShoppingItem) {
                throw new \InvalidArgumentException("Expecting only shopping items.");
            }
        }
        $this->items = $items;
    }

    public function getName(): string
    {
        return $this->name;
    }

    public function getItems(): array
    {
        return $this->items;
    }

    public function addItem(string $name): void
    {
        $item = new ShoppingItem($name);
        $this->items[] = $item;
    }

    public function checkOffItem(string $name): void
    {
        $item = $this->findItemByName($name);
        if($item) {
            $item->checkOffItem();
            return;
        }
        throw new \LogicException("There is no item on this list called $name.");
    }

    private function findItemByName(string $name): ?ShoppingItem
    {
        foreach($this->items as $item) {
            if($item->getName() === $name) {
                return $item;
            }
        }
        return null;
    }

Answer 1

这是通过的测试。我没有向列表中添加其他项目。

 public function testAddItem(): void
    {
        //Arrange: Given an item to add to the shopping list
        $items = [new ShoppingItem('lettuce')];
        $list = new ShoppingList('my-groceries', $items);

        //Act: Add the item to the list
        $actual = $list->getItems();
        $list->addItem('cabbage');

        //Assert: Check to see if the item was added to the list
        $this->assertEquals($items, $actual);

    }

php 中的 addItem 单元测试

addItem unit test in php

php

oop

unit-testing