snipe-it/tests/unit/DepreciationTest.php

<?php
use App\Models\Depreciation;
use Illuminate\Foundation\Testing\WithoutMiddleware;
use Illuminate\Foundation\Testing\DatabaseMigrations;
use Illuminate\Foundation\Testing\DatabaseTransactions;

class DepreciationTest extends BaseTest
{
    /**
     * @var \UnitTester
     */
    protected $tester;

    public function testDepreciationAdd()
    {
      $depreciations = factory(Depreciation::class)->make();
      $values = [
        'name' => $depreciations->name,
        'months' => $depreciations->months,
      ];

      Depreciation::create($values);
      $this->tester->seeRecord('depreciations', $values);
    }

    public function testFailsEmptyValidation()
    {
       // An Asset requires a name, a qty, and a category_id.
        $a = Depreciation::create();
        $this->assertFalse($a->isValid());

        $fields = [
            'name' => 'name',
            'months' => 'months',
        ];
        $errors = $a->getErrors();
        foreach ($fields as $field => $fieldTitle) {
            $this->assertEquals($errors->get($field)[0], "The ${fieldTitle} field is required.");
        }
    }

    public function testADepreciationHasModels()
    {
        $depreciation = factory(Depreciation::class)->create();
        factory(App\Models\AssetModel::class, 5)->create(['depreciation_id'=>$depreciation->id]);
        $this->assertEquals(5,$depreciation->has_models());
    }

    public function testADepreciationHasLicenses()
    {
        $depreciation = factory(Depreciation::class)->create();
        factory(App\Models\License::class, 5)->create(['depreciation_id'=>$depreciation->id]);
        $this->assertEquals(5,$depreciation->has_licenses());
    }
}