PHPUnit表单测试在DateTime失败

4) Tests\AppBundle\Form\AssetStatusTypeTest::testValidForm with data set #0 (array('active'))
Failed asserting that two objects are equal.
--- Expected
+++ Actual
@@ @@
     'status' => 'active'
    'type' => null
    'amount' => null
-    'createdAt' => 2018-09-20T20:34:47.047520+0200
+    'createdAt' => 2018-09-20T20:34:47.047870+0200
     'updatedAt' => null
     'contract' => null
     'admin' => null

public function testValidForm($data)
{
    $form = $this->factory->create(AssetStatusType::class);
    $object = Entity::fromArray(new Asset(), $data);
    $form->submit($data);
    $this->assertTrue($form->isSynchronized());
    $this->assertEquals($object, $form->getData());
    $view = $form->createView();
    $children = $view->children;
    foreach (array_keys($data) as $key) {
        $this->assertArrayHasKey($key, $children);
    }
}

多少是 copied from the docs .

createdAt 字段设置如下:

public function __construct()
{
    if (empty($this->createdAt)) {
        $this->createdAt = new \DateTime();
    }
}

我的主要观点是:这个测试通过了我们的詹金斯。它不在几个开发人员机器上本地运行。我的第一个冲动是检查ini时区设置。

object 已创建,实际值为提交表单时的值。所以两个物体不能有相同的 precision 可能是超低。