Adding content to 113-testing

src/roadmaps/flutter/content/113-testing/100-unit-testing.md

@@ -1,7 +1,11 @@
-# Unit testing
+# Unit Testing
+
+Unit testing in Flutter is the process of testing individual units of code, such as functions or classes, to ensure that they behave as expected. Unit testing helps to catch bugs early in the development process and increases the confidence in your code by making it easier to refactor or make changes without breaking existing functionality.
+
+In Flutter, you can write unit tests using the test package, which provides a testing framework and various test utilities. You can write tests that run on the Dart VM or on a physical device or emulator. The tests are written using a combination of Dart code and special test functions provided by the test package. You can use assert statements to verify the behavior of your code, and the testing framework will report whether the tests pass or fail.
 
-Unit tests are handy for verifying the behavior of a single function, method, or class.
 
 Visit the following resources to learn more:
 
 - [An introduction to unit testing](https://docs.flutter.dev/cookbook/testing/unit/introduction)
+- [Unit tests - Flutter](https://docs.flutter.dev/testing#unit-tests)

src/roadmaps/flutter/content/113-testing/101-widget-testing.md

@@ -1,7 +1,12 @@
-# Widget testing
+# Widget Testing
 
-Flutter provides necessary tools and libraries to test widget classes.
+Widget testing in Flutter is the process of testing the behavior and appearance of individual widgets, in isolation from the rest of your app. It allows you to verify that a widget works correctly, displays the expected output, and behaves correctly in response to user interactions.
+
+In Flutter, you can write widget tests using the `flutter_test` package, which provides a testing framework for writing and running widget tests. A widget test is similar to a unit test, but instead of testing individual functions, you test entire widgets. You can use the `TestWidgetsFlutterBinding` to run your widget tests and simulate user interactions, such as taps, scrolls, and other gestures.
+
+The framework provides several utility functions to help you build and test widgets, such as `pumpWidget`, which allows you to pump a widget and its children into the widget tree and simulate a frame of animation, and `find`, which allows you to search the widget tree for a widget that matches specific criteria.
 
 Visit the following resources to learn more:
 
 - [An introduction to widget testing](https://docs.flutter.dev/cookbook/testing/widget/introduction)
+- [Widget Tests - Flutter](https://docs.flutter.dev/testing#widget-tests)

src/roadmaps/flutter/content/113-testing/102-integration-testing.md

@@ -1,7 +1,12 @@
-# Integration testing
+# Integration Testing
 
-Integration tests check how individual pieces work together as a whole, capture the performance of an application.
+Integration tests in Flutter are tests that verify the behavior of your app as a whole, rather than individual widgets or functions. Integration tests allow you to test the interactions between different parts of your app and verify that the overall behavior of the app is correct.
+
+In Flutter, you can write integration tests using the `flutter_driver` package, which provides a testing framework for writing and running integration tests. An integration test runs on a physical device or an emulator, and uses the `FlutterDriver` class to interact with the app and simulate user interactions, such as taps, scrolls, and gestures.
+
+The framework provides several utility functions to help you interact with your app, such as `tap`, `scroll`, and `enterText`, which allow you to perform actions in your app and verify its behavior. You can also use `waitFor`, which allows you to wait for specific conditions to be met before continuing with the test.
 
 Visit the following resources to learn more:
 
 - [An introduction to integration testing](https://docs.flutter.dev/cookbook/testing/integration/introduction)
+- [Integration Tests](https://docs.flutter.dev/testing#integration-tests)

src/roadmaps/flutter/content/113-testing/103-tdd.md

@@ -1 +1,10 @@
-# Tdd
+# TDD
+
+Test-driven development (TDD) is a software development methodology in which tests are written before the implementation of the code they are testing. The idea behind TDD is to write a failing test first, then write just enough code to make the test pass, and then refactor the code if necessary. This process is repeated for each new feature or requirement that is added to the app.
+
+In Flutter, TDD can be applied using the `test` and `flutter_test` packages, which provide testing frameworks for writing and running unit tests and widget tests, respectively. TDD can be used to write tests for individual functions, classes, and widgets, as well as integration tests that verify the behavior of the app as a whole.
+
+Learn more from the following links:
+
+- [Test-Driven Development in Flutter](https://techblog.geekyants.com/test-driven-development-in-flutter)
+- [Flutter TDD Clean Architecture Course](https://www.youtube.com/watch?v=KjE2IDphA_U)

src/roadmaps/flutter/content/113-testing/104-bdd.md

@@ -1 +1,10 @@
-# Bdd
+# BDD
+
+Behavior-driven development (BDD) is a software development methodology that emphasizes collaboration between developers, testers, and stakeholders to define and verify the behavior of an application. BDD uses natural language to describe the expected behavior of the application and provides a shared understanding of the requirements for the development team.
+
+In Flutter, BDD can be applied using the `flutter_driver` package, which provides a testing framework for writing and running integration tests. BDD can be used to write tests that verify the behavior of the app as a whole, rather than individual widgets or functions.
+
+Learn morer from the following links:
+
+- [Build Flutter with BDD](https://medium.com/tide-engineering-team/build-flutter-with-bdd-b4507170a2fe)
+- [Tutorial - BDD in Flutter](https://www.youtube.com/watch?v=Kwvsc31FE_8)

src/roadmaps/flutter/content/113-testing/index.md

@@ -1 +1,17 @@
-# Testing
+# Testing
+
+Testing is a crucial part of the development process in Flutter, as it helps you to verify the behavior and appearance of your app and ensure that it behaves correctly and consistently across different devices and platforms.
+
+There are several types of tests that you can write to verify the behavior and appearance of your app:
+
+- Unit tests
+- Widget tests
+- Integration tests
+- Acceptance tests
+
+In Flutter, you can write tests using the test and flutter_test packages, which provide testing frameworks for writing and running unit tests and widget tests, respectively. You can also use the flutter_driver package, which provides a testing framework for writing and running integration tests.
+
+Learn more from the following links:
+
+- [Dart Testing](https://dart.dev/guides/testing)
+- [Testing Flutter apps](https://docs.flutter.dev/testing)