agent-unit-testing/templates/cakephp/phpunit/CommandTest.template.php

<?php
declare(strict_types=1);

namespace App\Test\TestCase\Command;

use Cake\Console\TestSuite\ConsoleIntegrationTestTrait;
use Cake\TestSuite\TestCase;

/**
 * App\Command\{{COMMAND_NAME}}Command Test Case
 */
class {{COMMAND_NAME}}CommandTest extends TestCase
{
    use ConsoleIntegrationTestTrait;

    /**
     * setUp method
     */
    protected function setUp(): void
    {
        parent::setUp();
        $this->useCommandRunner();
    }

    /**
     * Test execute with success
     */
    public function testExecuteSuccess(): void
    {
        // Act
        $this->exec('{{COMMAND_SLUG}}');

        // Assert
        $this->assertExitSuccess();
        $this->assertOutputContains('Done');
    }

    /**
     * Test execute with invalid argument
     */
    public function testExecuteFailsOnMissingArgument(): void
    {
        // Act
        $this->exec('{{COMMAND_SLUG}} --invalid-flag');

        // Assert
        $this->assertExitError();
    }
}