user table implement Identity Interface and properly work in actual scenario but in test scenario i got the below error
the full error in terminal is :
LoginFormCest: Internal login by id
Test tests/functional/LoginFormCest.php:internalLoginById
[Error] Call to a member function get() on null
Scenario Steps:
3. $I->amOnPage("/") at tests/functional/LoginFormCest.php:16
2. $I->amLoggedInAs(1) at tests/functional/LoginFormCest.php:15
1. $I->amOnPage({"0":"site\/login","language":"en"}) at tests/functional/LoginFormCest.php:6
#1 /var/www/html/basic/vendor/yiisoft/yii2/base/Widget.php:139
#2 /var/www/html/basic/views/site/index.php:108
#3 /var/www/html/basic/vendor/yiisoft/yii2/base/View.php:328
#4 /var/www/html/basic/vendor/yiisoft/yii2/base/View.php:250
#5 /var/www/html/basic/vendor/yiisoft/yii2/base/View.php:152
#6 /var/www/html/basic/vendor/yiisoft/yii2/base/Controller.php:381
#7 /var/www/html/basic/controllers/SiteController.php:81
#8 app\controllers\SiteController->actionIndex
#9 /var/www/html/basic/vendor/yiisoft/yii2/base/InlineAction.php:57
#10 /var/www/html/basic/vendor/yiisoft/yii2/base/Controller.php:156
thanks to the Alexander Makarov for checking this issue. finally i found the problem, the problem was in my config/test.php and configuration has the problem.