尝试在Drupal项目上运行PhpUnit测试时出现此错误

Question

TypeError: Argument 1 passed to Drupal\\views\\Plugin\\views\\HandlerBase::__construct() must be of the type array phpunit

My code is:

use Drupal\views_simple_math_field\Plugin\views\field\SimpleMathField;

class BasicTest extends PHPUnit_Framework_TestCase
{
   public function test_proba()
   {
     $first = 25;
     $second = 5;
     $result = 13;
     $test = new SimpleMathField();
     $working = $test->plus($first,$second,$result);
     $this->assertEquals($result,$working);

 }
}

I think the error is within " $test = new SimpleMathField(); because the test runs perfectly when I run it like this:

<?php

use Drupal\views_simple_math_field\Plugin\views\field\SimpleMathField;

class BasicTest extends PHPUnit_Framework_TestCase
{
   public function test_proba()
   {
     $first = 25;
     $second = 5;
     $result = 13;
    $this->assertTrue(True);

 }
}

Answer 1

The problem is not with your test, but how you instantiate the field. Through a chain of abstraction the class extends HandlerBase and the constructor linked looks like this:

public function __construct(array $configuration, $plugin_id, $plugin_definition) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->is_handler = TRUE;
}

You could try something like this:

new SimpleMathField(array(), 'test_id', 'test_definition');

You probably have to check in the plus() method if some of these variables passed to __construct or initialized by them is needed in there. You could also try something called partial mocking, where you disable the constructor but keep the tested method in test:

$partiallyMockedField = $this->getMockBuilder(SimpleMathField::class)
    ->disableOriginalConstructor()
    ->setMethods([])
    ->getMock();

You might have to add some methods you need to be mocked in the array. Those will be replaced with whatever you specify using expects() and method() in your typical mocks.

Disclaimer: I'm not sure if you have to pass an empty array or an explicit null to setMethods to make this work as I rarely use partial mocking myself. You have to check the docs or try yourself.