HTTP test assertions in Laravel - Mini Project: Build & Apply

HTTP Test Assertions in Laravel

📖 Scenario: You are building a simple Laravel application that has a route returning a welcome message. You want to write tests to check if the HTTP responses are correct.

🎯 Goal: Write HTTP test assertions in Laravel to verify the response status, content, and JSON structure of a route.

📋 What You'll Learn

Create a test method that sends a GET request to the /welcome route

Assert that the response status is 200

Assert that the response contains the text Welcome to Laravel

Assert that the response JSON has a key message with value Welcome to Laravel

💡 Why This Matters

🌍 Real World

Testing HTTP responses ensures your web routes return the correct data and status, preventing bugs before deployment.

💼 Career

Writing HTTP test assertions is a key skill for Laravel developers to maintain reliable and robust web applications.

1

Create a test method with a GET request

Create a test method called test_welcome_route_returns_success inside a Laravel test class. Inside it, send a GET request to the /welcome route using $response = $this->get('/welcome');

Laravel

<?php

namespace Tests\Feature;

use Tests\TestCase;

class WelcomeTest extends TestCase
{
    // Your test methods will go here

    public function test_welcome_route_returns_success()
    {
        // Your code here
    }
}

Need a hint?

Use $this->get('/welcome') to send a GET request inside your test method.

2

Assert the response status is 200

Add an assertion to check that the response status is 200 using $response->assertStatus(200); inside the test_welcome_route_returns_success method.

Laravel

get('/welcome');
        // Add assertion for status 200 below
    }
}

Need a hint?

Use assertStatus(200) on the response object to check the HTTP status.

3

Assert the response contains specific text

Add an assertion to check that the response contains the text Welcome to Laravel using $response->assertSee('Welcome to Laravel'); inside the test_welcome_route_returns_success method.

Laravel

get('/welcome');
        $response->assertStatus(200);
        // Add assertion to check response text below
    }
}

Need a hint?

Use assertSee('Welcome to Laravel') to check if the response contains the text.

4

Assert the response JSON has a message key

Add an assertion to check that the response JSON has a key message with value Welcome to Laravel using $response->assertJson(['message' => 'Welcome to Laravel']); inside the test_welcome_route_returns_success method.

Laravel

get('/welcome');
        $response->assertStatus(200);
        $response->assertSee('Welcome to Laravel');
        // Add assertion to check JSON message below
    }
}

Need a hint?

Use assertJson(['message' => 'Welcome to Laravel']) to check the JSON response content.