Trait for test emails using mailcatcher

Emails.php

<?php

namespace App\Testing;

use GuzzleHttp\Client;

trait Emails
{
    /**
     * Assert last email from mailcatcher is sent from a specified address.
     *
     * @param  string $email
     * @return $this
     */
    protected function seeEmailSentFrom($email)
    {
        $sender = $this->getLastEmail()['sender'];

        $this->assertEquals("<$email>", $sender);

        return $this;
    }

    /**
     * Assert last email from mailcatcher is sent to a specified address.
     *
     * @param  string $email
     * @return $this
     */
    protected function seeEmailSentTo($email)
    {
        $recipients = $this->getLastEmail()['recipients'];

        $this->assertTrue(in_array("<$email>", $recipients));

        return $this;
    }
    /**
     * Assert that the last email from mailcatcher contains a specified text.
     *
     * @param  string  $text
     * @return $this
     */
    protected function seeEmailContains($text)
    {
        // Grab the last email ID.
        $id = last($this->getAllEmails())['id'];

        // Get the last email contents.
        $email = $this->mailcatcher()->get("/messages/{$id}.html")
            ->getBody()
            ->getContents();

        // Finally assert that email contains the message.
        $this->assertContains($text, $email);

        return $this;
    }

    /**
     * Returns an instance of GuzzleHttp\Client ready to query mailcatcher API.
     *
     * @return \GuzzleHttp\Client
     */
    protected function mailcatcher()
    {
        return new Client(['base_uri' => 'http://127.0.0.1:1080']);
    }

    /**
     * Gets all emails from mailcatcher.
     *
     * @return array
     */
    protected function getAllEmails()
    {
        // Grab all messages from mailcatcher as an array.
        $emails = json_decode(
            $this->mailcatcher()->get('/messages')->getBody()->getContents(),
            true
        );

        // If there is no messages then the test will fail.
        if (empty($emails)) {
            $this->fail('No emails found.');
        }

        return $emails;
    }

    /**
     * Get the last email.
     *
     * @return array
     */
    protected function getLastEmail()
    {
        return last($this->getAllEmails());
    }
}