SaleRequest.php

<?php

namespace App\Http\Requests;

use App\Concerns\TransformsToMonetra;
use Illuminate\Foundation\Http\FormRequest;

class SaleRequest extends FormRequest
{
    use TransformsToMonetra;

    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'ttid' => 'required_without:token|string',
            'amount' => 'required',
            'token' => 'required_without:ttid|string',
            'allow_partial_authorization' => 'sometimes|required|boolean',
            'card_present' => 'sometimes|required|boolean',
        ];
    }

    protected function getValidatorInstance()
    {
        return parent::getValidatorInstance()->after(function ($validator) {
            if ($this->ecomm === true && $this->moto === true) {
                $message = 'moto and ecomm can not both be set to true';

                $validator->errors()->add('ecomm', $message);
                $validator->errors()->add('moto', $message);
            }
        })->after(function ($validator) {
            if (!empty($this->ttid) && !empty($this->token)) {
                $message = 'ttid and token can not be sent together';

                $validator->errors()->add('token', $message);
                $validator->errors()->add('ttid', $message);
            }
        });
    }
}

SaleRequestTest.php

<?php

namespace Tests\Unit;

use Tests\TestCase;
use Illuminate\Http\Request;
use App\Http\Requests\SaleRequest;
use Illuminate\Validation\ValidationException;

class SaleRequestTest extends TestCase
{
    /** @test */
    public function it_transforms_to_monetra()
    {
        $request = new SaleRequest([
            'ttid' => '1234',
            'amount' => '3.50',
            'token' => '123456',
            'allow_partial_authorization' => true,
            'card_present' => true,
        ]);

        $this->assertEquals([
            'ttid' => '1234',
            'amount' => '3.50',
            'token' => '123456',
            'nsf' => 'Y',
            'cardpresent' => 'Y',
        ], $request->toMonetra());
    }

    /** @test */
    public function it_authorizes_requests()
    {
        $this->assertTrue((new SaleRequest)->authorize());
    }

    /** @test */
    public function it_requires_either_a_ttid_or_a_token()
    {
        try {
            $this->app[SaleRequest::class];
        } catch (ValidationException $e) {
            $this->assertArrayHasKey('ttid', $e->errors());
            $this->assertArrayHasKey('token', $e->errors());
        }
    }

    /** @test */
    public function ttid_and_token_cant_both_be_sent()
    {
        $this->app['request'] = new Request([
            'ttid' => '1234',
            'token' => '12345',
            'amount' => '3.50',
        ]);

        try {
            $this->app[SaleRequest::class];
        } catch (ValidationException $e) {
            $this->assertArrayHasKey('token', $e->errors());
            $this->assertArrayHasKey('ttid', $e->errors());
        }
    }

    /** @test */
    public function ecomm_and_moto_cant_both_be_true()
    {
        $this->app['request'] = new Request([
            'amount' => '3.50',
            'ttid' => '1234',
            'moto' => true,
            'ecomm' => true,
        ]);


        try {
            $this->app[SaleRequest::class];
        } catch (ValidationException $e) {
            $this->assertArrayHasKey('moto', $e->errors());
            $this->assertArrayHasKey('ecomm', $e->errors());
        }
    }
}