Yii2 ActiveRecord mocking with Mockery

I'm running phpunit with mockery (without DB/fixtures), but I have a trouble with mocking a model.

$customer = Mockery::mock(CustomerModel::class);
echo $customer->id;

Produces error:

BadMethodCallException: Method Mockery_1_models_Customer::hasAttribute() does not exist on this mock object

Then I tried:

$customer->shouldReceive('hasAttribute')->andReturn(true);

But again, I run in to:

Fatal error: Call to a member function getDb() on a non-object in ..\yiisoft\yii2\db\ActiveRecord.php on line 135

Any suggestions?