Laravel Testing Service Dependency Injection Error - php

Question

To start from the conclusion, I get this error:
[ErrorException]
Argument 1 passed to SomeValidatorTest::__construct() must be an instance of App\Services\Validators\SomeValidator, none given, called in ....vendor/phpunit/phpunit/src/Framework/TestSuite.php on line 475 and defined
In Laravel app, I have a script called "SomeValidator.php" which looks like this:
<?php namespace App\Services\Validators;
use App\Services\SomeDependency;
class SomeValidator implements ValidatorInterface
{
public function __construct(SomeDependency $someDependency)
{
$this->dependency = $someDependency;
}
public function someMethod($uid)
{
return $this->someOtherMethod($uid);
}
}
which runs without error.
Then the test script, SomeValidatorTest.php looks like this:
<?php
use App\Services\Validators\SomeValidator;
class SomeValidatorTest extends TestCase
{
public function __construct(SomeValidator $validator)
{
$this->validator = $validator;
}
public function testBasicExample()
{
$result = $this->validator->doSomething();
}
}
The error shows up only when the test script is ran through './vendor/bin/phpunit' The test class seems to be initiated without the dependency stated and throws an error. Does anyone know how to fix this? Thanks in advance.

Answer 1

You cannot inject classes into the tests (as far as i know), given that they are not resolved automatically by laravel/phpUnit.
The correct way is to make (resolve) them through laravel's app facade. Your test script should look like this:
<?php
class SomeValidatorTest extends TestCase
{
public function __construct()
{
$this->validator = \App::make('App\Services\Validators\SomeValidator');
}
public function testBasicExample()
{
$result = $this->validator->doSomething();
}
}
Source: http://laravel.com/docs/5.1/container