Toptal
Interest in Flutter is at an all-time high—and it’s long overdue. Google’s open-source SDK is compatible with Android, iOS, macOS, web, Windows, and Linux. A single Flutter codebase supports them all. And unit testing is instrumental in delivering a consistent and reliable Flutter app, ensuring against errors, flaws, and defects by preemptively improving the quality of code before it is assembled.
In this tutorial, we share workflow optimizations for Flutter unit testing, demonstrate a basic Flutter unit test, then move on to more complex Flutter test cases and libraries.
The Flow of Unit Testing in Flutter
We implement unit testing in Flutter in much the same way that we do in other technology stacks:
Evaluate the code. Set up data mocking. Define the test group(s). Define test function signature(s) for each test group. Write the tests.
To demonstrate unit testing, I’ve prepared a sample Flutter project and encourage you
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