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samples/testing_app
Abdullah Deshmukh 59b50ec010
[testing_app] Fix failing integration tests (#756)
4 years ago
..
android Add an e2e (host-independent) test demo to testing_app (#515) 4 years ago
integration_test [testing_app] Fix failing integration tests (#756) 4 years ago
ios Landing beta changes in master for the new stable release (#747) 4 years ago
lib Landing beta changes in master for the new stable release (#747) 4 years ago
test [testing_app] Migrate the sample to the integration_test package (#633) 4 years ago
.gitignore Testing sample (#500) 4 years ago
.metadata Testing sample (#500) 4 years ago
README.md [testing_app] Migrate the sample to the integration_test package (#633) 4 years ago
analysis_options.yaml Testing sample (#500) 4 years ago
pubspec.lock [testing_app] Fix failing integration tests (#756) 4 years ago
pubspec.yaml [testing_app] Migrate the sample to the integration_test package (#633) 4 years ago

README.md

testing_app

A Sample app that shows different types of testing in Flutter.

This particular sample uses the Provider package but any other state management approach would do.

Goals for this sample

Show how to perform:

  • Widget Testing,
  • Integration Testing,
  • Performance Testing, and
  • State Management Testing using the Provider package.

How to run tests

  • Navigate to the project's root folder using command line and follow the instructions below.

To run tests using only the Flutter SDK:

The Flutter SDK can run unit tests and widget tests in a virtual machine, without the need of a physical device or emulator.

  • To run all the test files in the test/ directory in one go, run flutter test.
  • To run a particular test file, run flutter test test/<file_path>

To run tests on a physical device/emulator:

  • Widget Tests:
    • Run flutter run test/<file_path>
  • Integration Tests:
    • Run flutter drive --driver=integration_test/driver.dart --target=integration_test/app_test.dart
  • Performance Tests:
    • Run flutter drive --driver=integration_test/driver.dart --target=integration_test/perf_test.dart --profile --trace-startup
      • Using a physical device and running performance tests in profile mode is recommended.
      • The --trace-startup option is used to avoid flushing older timeline events when the timeline gets long.
  • State Management Tests:
    • For testing state using Flutter Integration Tests
      • Run flutter drive --driver=integration_test/driver.dart --target=integration_test/state_mgmt_test.dart

To generate test coverage report:

  • Install the lcov tool:
    • For MacOS, run brew install lcov
    • For Linux, run sudo apt install lcov
  • Run tests with coverage:
    • flutter test --coverage
  • Convert lcov.info into readable html:
    • Run genhtml coverage/lcov.info -o coverage/index
  • Open coverage/index/index.html in your preferred browser.

CI/CD

  • Refer .github and the tool directory to see how to test Flutter projects using GitHub Actions.

Note that tools like GitHub Actions can't run tests on a physical device, which is required to run integration tests. Instead, you can use Firebase Test Lab, Codemagic or any platform of your choice to do that.

Questions/issues

If you have a general question about testing in Flutter, the best places to go are:

If you run into an issue with the sample itself, please file an issue.