Target class [translator] does not exist.

Thansk, but I already found that thread and it did not fix the problem.

Do you know which class I shoud add as a use for fixing the translator missing error? I've tried sereveral, but none of them fixed the error.

As already mentioned: it's a first for me to create PHPUnit test classes, so it's a very simple class I'm testing.

The class I want to test:

<?php

namespace App\Tools;

/**
 * Class Gender
 * @package App\Tools
 */
class Gender
{
    public const UNKNOWN = "U";
    public const MALE    = "M";
    public const FEMALE  = "F";

    /**
     * Get the long text for the gender
     *
     * @param $gender
     * @return mixed
     */
    public static function get( $gender )
    {
        if( self::is( $gender ) )
            return self::all()[$gender];
        else
            return false;
    }

    /**
     * Check if it's a valid gender
     *
     * @param $gender
     * @return bool
     */
    public static function is( $gender )
    {
        return( ! empty( self::all()[$gender] ) );
    }

    /**
     * Get all genders with text
     *
     * @return array
     */
    public static function all()
    {
        return [
            self::UNKNOWN => trans('Unknown'),
            self::MALE => trans('Male'),
            self::FEMALE => trans('Female')
        ];
    }

    /**
     * Get array of short gender codes
     *
     * @return string[]
     */
    public static function keys()
    {
        return [
            self::UNKNOWN,
            self::MALE,
            self::FEMALE
        ];
    }
}

and the PHPUnit test class:

<?php

namespace Tools;

use App\Tools\Gender;
use PHPUnit\Framework\TestCase;

/**
 * Class GenderTest
 * @package Tools
 */
class GenderTest extends TestCase
{
    /**
     * test the Gender class
     */
    public function testGender(): void
    {
        $gender = new Gender();

        $this->assertTrue( $gender->is( "U" ) );
        $this->assertTrue( $gender->is("M") );
        $this->assertTrue( $gender->is("F") );
        $this->assertFalse( $gender->is( "A") );
        $this->assertFalse( $gender->is( 1 ) );
    }
}

Thanks a lot! Fixed. The phpStorm / Laraval Idea plugin doesn't take that classs into account by default.

@mabdullahsari thanks this solve the problem