Laravel：assertDatabaseHas-意外失败

Question

我不明白为什么这个数据库测试失败。我知道我没有对created_at和updated_at列进行断言，但是三列（id，user_id，thing_id）应该足够，并且我敢肯定，我之前只对一部分列进行了测试，它工作了！

我想念什么？

    Failed asserting that a row in the table [thing_history] matches the attributes [
            {
                "id": 1,
                "user_id": 1,
                "thing_id": 1
            },
            {
                "id": 2,
                "user_id": 1,
                "thing_id": 2
            },
            {
                "id": 3,
                "user_id": 1,
                "thing_id": 3
            }
        ].

        Found: [
            {
                "id": "1",
                "user_id": "1",
                "thing_id": "1",
                "created_at": "2019-02-01 21:18:17",
                "updated_at": "2019-02-01 21:18:17"
            },
            {
                "id": "2",
                "user_id": "1",
                "thing_id": "2",
                "created_at": "2019-02-01 21:18:17",
                "updated_at": "2019-02-01 21:18:17"
            },
            {
                "id": "3",
                "user_id": "1",
                "thing_id": "3",
                "created_at": "2019-02-01 21:18:17",
                "updated_at": "2019-02-01 21:18:17"
            }
        ]



This is the test code

    /** @test */
    public function retrieving_feed_creates_history()
    {
        $user = factory('App\User')->create();

        $this->actingAs($user);

        factory('App\Thing', 3)->create();

        $response = $this->json('GET', '/api/thing/feed/all');

        $this->assertDatabaseHas('feed_histories', [
            [
                'id' => 1,
                'thing_id' => 1,
                'user_id' => $user->id,
            ],
            [
                'id' => 2,
                'thing_id' => 2,
                'user_id' => $user->id,
            ],
            [
                'id' => 3,
                'thing_id' => 3,
                'user_id' => $user->id,
            ]
        ]);
    }

这是迁移代码：

  public function up()
        {
            Schema::create('feed_histories', function (Blueprint $table) {
                $table->increments('id');
                $table->integer('user_id');
                $table->integer('thing_id');
                $table->timestamps();
            });
        }

Answer 1

似乎我误解了一些东西。要检查几行，我必须将测试分为每行单独的断言。

这很好用：

$this->assertDatabaseHas('feed_histories', [
        'thing_id' => $thingA->id,
        'user_id' => $user->id, 
]);

$this->assertDatabaseHas('feed_histories', [
        'thing_id' => $thingB->id,
        'user_id' => $user->id, 
]);

Answer 2

是的，多个记录的映射失败，因为assertDatabaseHas函数当前仅通过在where子句中映射单行来处理单行...

为了获得更好的见解，您可以看一下assertDatabaseHas的基本函数

public function matches($table): bool
{
    return $this->database->table($table)->where($this->data)->count() > 0;
}

这里，$ this->数据引用assertDatabase的第二个参数。因此，它清除了我们对为什么不能传递数组的怀疑。