flutter/packages/flutter_tools/test/integration.shard/README.md

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# Integration tests
These tests are not hermetic, and use the actual Flutter SDK. While
they don't require actual devices, they run `flutter_tester` to test
Dart VM and Flutter integration.
Use this command to run (from the `flutter_tools` directory):
```shell
../../bin/cache/dart-sdk/bin/dart run test test/integration.shard
```
You need to have downloaded the Dart SDK in your Flutter clone for this
to work. Running `../../bin/flutter` will automatically download it.
## Coverage exclusion
These tests are expensive to run and do not give meaningful coverage
information for the `flutter` tool (since they are black-box tests that
run the tool as a subprocess, rather than being unit tests). For this
reason, they are in a separate shard when running on continuous
integration and are not run when calculating coverage.
## Adding new test files
When adding a new test file make sure that it ends with `_test.dart`, or else it will not be run.