mirror of
https://github.com/flutter/flutter
synced 2024-10-13 19:52:53 +00:00
86 lines
2.8 KiB
Markdown
86 lines
2.8 KiB
Markdown
# Flutter Tools
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This section of the Flutter repository contains the command line developer tools
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for building Flutter applications.
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## Working on Flutter Tools
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Be sure to follow the instructions on [CONTRIBUTING.md](../../CONTRIBUTING.md)
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to set up your development environment. Further, familiarize yourself with the
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[style guide](https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo),
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which we follow.
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### Setting up
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First, ensure that the Dart SDK and other necessary artifacts are available by
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invoking the Flutter Tools wrapper script. In this directory run:
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```shell
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$ ../../bin/flutter --version
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```
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### Running the Tool
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To run Flutter Tools from source, in this directory run:
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```shell
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$ ../../bin/cache/dart-sdk/bin/dart bin/flutter_tools.dart
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```
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followed by command line arguments, as usual.
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### Running the analyzer
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To run the analyzer on Flutter Tools, in this directory run:
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```shell
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$ ../../bin/flutter analyze
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```
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### Writing tests
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As with other parts of the Flutter repository, all changes in behavior [must be
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tested](https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#write-test-find-bug).
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Tests live under the `test/` subdirectory.
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- Hermetic unit tests of tool internals go under `test/general.shard`.
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- Tests of tool commands go under `test/commands.shard`. Hermetic tests go under
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its `hermetic/` subdirectory. Non-hermetic tests go under its `permeable`
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sub-directory.
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- Integration tests (e.g. tests that run the tool in a subprocess) go under
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`test/integration.shard`.
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In general, the tests for the code in a file called `file.dart` should go in a
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file called `file_test.dart` in the subdirectory that matches the behavior of
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the test.
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We measure [test coverage](https://codecov.io/gh/flutter/flutter) post-submit.
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A change that deletes code might decrease test coverage, however most changes
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that add new code should aim to increase coverage. In particular the coverage
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of the diff should be close to the average coverage, and should ideally be
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better.
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### Running the tests
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To run the tests in the `test/` directory, first ensure that there are no
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connected devices. Then, in this directory run:
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```shell
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$ ../../bin/cache/dart-sdk/bin/pub run test
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```
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The tests in `test/integration.shard` are slower to run than the tests in
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`test/general.shard`. To run only the tests in `test/general.shard`, in this
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directory run:
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```shell
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$ ../../bin/cache/dart-sdk/bin/pub run test test/general.shard
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```
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To run the tests in a specific file, run:
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```shell
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$ ../../bin/cache/dart-sdk/bin/pub run test test/general.shard/utils_test.dart
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```
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### Forcing snapshot regeneration
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To force the Flutter Tools snapshot to be regenerated, delete the following
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files:
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```shell
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$ rm ../../bin/cache/flutter_tools.stamp ../../bin/cache/flutter_tools.snapshot
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```
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