Flutter Unit Testing with flutter_test & build_runner | Step-by-Step Tutorial

Ready to write clean, reliable, and testable Flutter code? In this tutorial, I’ll show you how to set up and run unit tests in Flutter using the powerful flutter_test and build_runner packages.

📌 What You’ll Learn:

What is unit testing and why it matters

Set up flutter_test in your project

Use build_runner to generate mocks/stubs

Write unit tests for services, models, and logic

Run tests with flutter test and view results

Best practices for readable, maintainable test code

📦 Packages Used:

flutter_test

build_runner

mockito or similar for mocking

📂 Source Code: https://drive.google.com/file/d/1kOl4tab_mAtyvDAy33Zp421CNKiOuMTv/view?usp=sharing
📖 Docs: https://docs.google.com/document/d/1L8kwyUFvxYF5V7TboL95b1Ryv1JxObQ_/edit?usp=sharing&ouid=102516202580745719529&rtpof=true&sd=true

💡 Great for Flutter beginners and pros who want to increase app reliability and test coverage.
00:00 - 01:07 Create new project
01:07 - 02:12 Add dependency
02:12 - 02:32 Add methods helper
02:32 - 03:15 Add Screen
03:14 - 04:09 Run Project
04:09 - 04:48 Add test file
04:48 - 05:36 Run test
05:36 - 06:08 Add api service (Advance test)
06:08 - 07:00 Add api service test file
07:00 - 07:56 Run command and generate file
07:56 - 08:18 Run test

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🔖 Tags & Hashtags:
#FlutterTesting #UnitTestFlutter #flutter_test #build_runner #FlutterQA #TestDrivenDevelopment #MockitoFlutter #CleanArchitectureFlutter

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