Learn To Test Symfony Projects Like the Pros

Testing Symfony

Real-World Testing with Symfony


This course teaches you how to test Symfony applications with confidence - using both application-level tests and unit tests to cover what matters. You'll learn when to use each type of test, how to structure them properly, and how to use Symfony’s built-in tools to make testing faster and more reliable.


We cover things like:

  • Writing application tests that verify full request–response flows
  • Using Symfony’s HTTP client and test helpers to simulate users and assert output
  • Mocking services and dependencies cleanly
  • Testing emails (content, recipients, delivery)
  • Structuring your tests to stay fast and maintainable


Each lesson focuses on a practical goal - whether it’s testing a controller, a form submission, or a side effect - and walks you through the best way to test it using Symfony's features.


You’ll come away with a full understanding of how to combine unit tests for logic with application tests for behaviour, using the tools Symfony gives you - and you’ll actually enjoy writing tests again.

BUY THIS COURSE NOW

One payment ofΒ $49Β + VAT added on checkout page
βœ… 35+ real-world video lessons
βœ… Step-by-step Symfony testing workflows
βœ… All code examples included
βœ… Lifetime access to all materials
πŸ“œ Certificate of achievement
🀝 30-day money-back guarantee

By the end of the course, you’ll have a complete understanding of these ESSENTIALS…

πŸ”₯ Real-World Testing with Symfony - Build confidence testing real applications, not toy examples
πŸ§ͺ Application Testing with WebTestCase - Simulate user interactions and verify full system behavior
πŸ“€ File Upload Testing - Validate uploads are stored and handled correctly in your Symfony app
πŸ“§ Email Assertions - Check recipients, content, and headers without sending real emails
πŸ“¦ Service Replacement in Tests - Swap real services for fakes using Symfony’s container
πŸ”Œ Custom Test Doubles - Assert outgoing requests using simple doubles without mocking internals
🌐 HTTP Client Testing - Use MockHttpClient and MockResponse to test HTTP logic safely
πŸ“ Form Submission Testing - Submit real forms in your tests and catch issues early
πŸ›  Database Isolation with DAMA DoctrineTestBundle - Keep tests fast, isolated, and predictable
πŸ“œ Validation Testing - Assert form errors appear when input is invalid
🚦 Test Coverage Across Layers - Test everything from controllers to service classes
🧱 Symfony-Specific Testing Patterns - Learn the idiomatic Symfony way to test
 πŸ” Using Data Providers - Reuse one test across many input variations
🎯 Meaningful Assertions - Focus on what really matters, not just what’s easy to test
πŸš€ Test Strategy Mindset - Know when to use application tests, unit tests, or both

✨ PLUS MUCH MORE! ✨

Check Out Some Example Vids From The Course

Symfony Application Tests

In Symfony, anΒ application testΒ (sometimes called a feature test) interacts with your app in the same way a real user or browser would:
it makes an HTTP request, gets a response, and inspects that response for the expected content.

Test Fixture Files

When writing application tests, it’s important to make them as realistic as possible. If your app allows users to upload files, your tests should also cover that flow. Otherwise, you risk shipping code that works fine with plain form fields but breaks the moment a real file upload is involved.

Symfony Unit Tests

In this lesson, we create aΒ dedicated test classΒ and use PHPUnit’sΒ createMock()Β method to isolate dependencies.

MockHttpClient

To avoid making real network calls during our tests, we use Symfony’s powerfulΒ MockHttpClientΒ andΒ MockResponseΒ classes, which let us simulate HTTP requests and assert on the exact details of the outgoing request.

Frequently Asked Questions (FAQs)

(Please email me at [email protected] with any questions. We reply within 48 hours)

Q. Do I need to be a Symfony expert to take this course?
A. Not at all. As long as you’ve built a basic Symfony app before, you’ll be right at home. The project we test is simple and easy to follow but the testing techniques apply to real-world Symfony apps of any size.



Q. Is this course beginner-friendly?
A. If you’re already comfortable with Symfony, yes. But if you’re completely new to testing, you might prefer the full Testing PHP course, which covers testing fundamentals first then dives into both Symfony and Laravel projects.



Q. What exactly do we build and test in the course?
A. We build a small job application system and test it end to end. From form submission, file uploads, and email sending… to database saves and outbound HTTP requests. You’ll learn how to test everything the right way in a Symfony context.



Q. Is this just theory, or do we write real tests?
A. It's 100% hands-on. You’ll see how to write application tests, unit tests, and test real features like file uploads and HTTP clients. No abstract examples... everything is practical and focused on what you actually need as a Symfony developer.



Q. Will I have lifetime access?
A. Yes, a one-time payment gives you permanent access, including all future updates. No subscriptions, no upsells.



Q. Who is this course for?
A. Symfony developers who want to test their applications with confidence. Whether you're new to testing or just want to level up your approach, this course gives you the tools and mindset to write better, more reliable Symfony code.
Testing Symfony course

BUY THIS COURSE NOW

One payment ofΒ $49Β + VAT added on checkout page
βœ… 35+ real-world video lessons
βœ… Step-by-step Symfony testing workflows
βœ… All code examples included
βœ… Lifetime access to all materials
πŸ“œ Certificate of achievement
🀝 30-day money-back guarantee

Here is what people have said about my previous Testing PHP course


Gary Clarke’s teaching way is crystal clear and complete.- Lorenzo Sequi

Great course. Seen intro on youtube and decide buy a full. Thanks! -Anton Kulinich

In-depth knowledge presented in a comprehensive way; good examples; well explained; I learned a lot - Martin Komischke

I like your courses and style. - Raci

Best tutorial on this topic. Ilian Karasimirov

This course is very practical - Vakhtang

Very, very interesting and helpful - Ruslan

Course is clear, direct and easy to follow, even if one didn't use testing in the past - Richard

This is very useful course - Muhammad Nadeem

I didn't ever use phpunit because it was so hard to understand and figure out. This sets it up to be a success from the start to do TDD - Mr J

This course is very helpful in my php career - Asadullah

In depth course with great real life examples. Delivery of content is engaging and enjoyable - Joshua Caine

Really excellent course! - Brandon Oakley

Detailed in-depth premium content. Worth every penny - Janroe

Unit testing has been a low point in my professional PHP career the last few years. Have not found decent training anywhere. So glad to have found this course. - Karl Zipser

The course delivers a lot of specific knowledge that is not found anywhere else and the focus on complicated tests is very nice. The fact that the course keeps getting updated is a bonus. Eduardo

This course has clear explanations and Gary has the patience to explain every detail, which I think is very important. Demian

I like all your videos, great work. Keep rocking! Thank you for everything. Gokul jadhav.g

I want to hit the like button for every test passed. Thanks for the best tutorial available on this subject. Samuel Ferreira

You explain the Mock in unittest with very easy understanding, you have reproduced different use cases that are very important to understand!! Thank you so much! ε„ͺζ•£ηš„ε‚»ε‹’

I have ADHD and have trouble with getting comfortable with tutorial styles and formats. Your video here is just bliss to me. Thank you thank you! Please don't stop making videos! Sofascialistadankula Megadonakeratosis

Clear and detailed. - Piero Recchia

The testing PHP course is long, but very good and amazingly informative. Testing is something that has always eluded me, so the course has definitely given me a grounding and something I can/will refer back to. Thanks for the course Gary and your other OOP course, they have been excellent. - Jonathon Wood

Everything is perfect with this course. I am watching it for my team and am pretty sure they will love it - Mathieu

I just appreciate all of Gary's work!!!!!! - Karyna

Good explanations, concrete and diverse cases - Mikaidou

Here's a List Of The Course Lessons

Check Out The Free Previews!
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πŸš€ Your PHP Journey Starts Here: Follow the Proven Roadmap πŸ—ΊοΈ



All of my videos come with subtitles in your language
https://www.garyclarke.tech/p/learn-object-oriented-php

Step 1: Learn Object Oriented PHP πŸš€


Step 2: Understand Frameworks By Building One Yourself πŸ”₯


Step 3: Learn How To Test PHP Applications βœ…


Step 4: Learn How To Build API's in PHP πŸ”—


Step 5: Master SQL and MySQL πŸ› οΈ



Step 6: Get A Deep Understanding of Git and GitHub πŸ”„



This is what people have had to say about my other courses.


This is perfect! - Unjoined

You have a great way of explaining OOP - Locoplata

This is one of the best courses I have ever done. You have a gift for teaching. Your training has given me very valuable context for all things I knew, corrected some stuff I did incorrectly, and has taught me innumerable new things. - Mark Thijssen

Making me enjoy coding again. - Drew Hinde

Gary has deep knowledge and he is following the best practices. I have no suspicions about learning non-useful nor obsolete techniques. It is essential to have work / code discipline and he has it and kind of routing you to have the same. - Burak

Gary has a patient delivery style, and I can understand him. I also appreciate that code for the video is provided, with each video, because I like to spend time testing and changing that code to get further into it. - Karl Zipser

Well explained step by step approach - Takunda Chibanda
The way of teaching is so good with real time examples. There is also engaging activities - Lokith S

Information delivered clearly and in a well-structured way - Sim
This course is fantastic! I'm really looking forward to watching the rest of the course. Thanks a million Gary! - Michael Gibbs

Well structured and taught - Suleyman Solak

Great tutorial! - Fh Ndiritu

It's much more pleasant to follow than most other courses I have tried. - Mick Amato

Thanks for this video, been watching it for the 2nd time and I can't even feel the time goes by - Lexer Quine

I won't lie, I've watched a lot of php oop course and this is the best!! Thank you king - Yasser Latrach
PHP is making sense and I can apply what I am learning at my job - Dee

Very engaging and easy to understand the concepts - Luciano

I'm very happy with the course and the instructor. - Paulo

Gary explains OOP with PHP very clearly and is easy to understand. I think it's simply great - thanks for creating it!! - Nicolas Alexander Rau

This course is a true gem! It's the first time I watched a 3h course and felt I really understood the concepts. Thank you so much Gary! Looking forward to the full course:) - Giulia Pizzignacco

I saw all the videos of oriented object programming and they were awesome! Great content - Arius

Great stuff for OOP in PHP for beginners and great reminders for other Devs. - TomTom Shaylash

Excellent course delivered by a knowledgeable and engaging content creator. Highly recommended - Drew Hinde

I have learnt so much new information which helps me to write efficient php (oop) code. I am very thankful to Gary for providing such quality content - Ridwanullah Raufi

I'm very pleased with the way Gary explains everything. - Rob Spruyt

I'm enjoying the clear English of Gary, well spoken and succinct explanation of his code. - James

Exactly what I needed for my level of coding, I can create crud applications in PHP, but OOP is completely new to me. - Tom

Sufficiently long sections to be able to take in the information, it makes it easier to understand. Very good explanations. - Mats Akebrand

I have had an extremely positive experience with this course, so Mr Clarke had definitely earned a perfect 5 stars from me! This course has helped me to understand how OOP works SO MUCH better than I previously did. I 100% understand all of his examples. - Jeffrey Carter

Excellent course, interesting and engaging - Clive
Thank you so much! Appreciate your hard work - Paul Toma

Great work. Waiting for next videos - Alwin Augustin

Beautiful work! - Mohammed B

Great work. Thank you Sir! - Yusuf Aliya

Great video! Thanks so much - Ck

Interesting tutorial, thanks for all! - Mdazhardware

Thanks, awesome work!- Hamad Adel

Great work!- Houssem Rahrah

Thanks for your time we appreciate it!- Mamadou Aly Sy

Great!- Sergey Vasko

Nice course- Kennedy Muthui

Who Am I?


Hello and thank you so much for checking out my work. My name is Gary Clarke and I'm a software developer with many years experience, primarily in PHP. I started creating video tutorials during lockdown in 2020 because I wanted the challenge of being able to explain complex / technical subjects to others in a way which is easy to understand and remember.
At this moment in time, my videos have been watched over a million times and I intend to keep creating new and improved content and teaching more and more new people. It would be my pleasure to see you on the inside of one of my courses.