fvm 4.0.0-beta.1

A simple cli to manage Flutter SDK versions per project. Support channels, releases, and local cache for fast switching between versions.

fvm

FVM streamlines Flutter version management. It allows per project SDK versions, ensuring consistent app builds and easier testing of new releases, thereby boosting the efficiency of your Flutter project tasks.

Why FVM?

• Need for simultaneous use of multiple Flutter SDKs.
• SDK testing requires constant channel switching.
• Channel switches are slow and need repeated reinstalls.
• Difficulty managing the latest successful SDK version used in an app.
• Flutter's major updates demand total app migration.
• Inconsistencies occur in development environments within teams.

For more information, read FVM documentation.

Contributors

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Checkout Flutter Sidekick. Read more about it here.

Troubleshooting

Please view our FAQ.

License

This project is licensed under the MIT License; see LICENSE file for details.

FVM Version Format Testing Guide

This directory contains a testing environment for validating the Flutter Version Manager (FVM) version format handling. The tests focus on ensuring that all valid version formats are correctly parsed and applied, while invalid formats are properly rejected.

Test Script Overview

The run_tests.sh script automates the testing of various version formats with FVM. It:

1. Creates a clean Flutter test environment
2. Tests different version formats including:
   • Channel versions (stable, beta, dev, master)
   • Semantic versions (e.g., 2.10.0)
   • Versions with 'v' prefix (e.g., v2.10.0)
   • Versions with channel specification (e.g., 2.10.0@beta)
   • Fork specifications (e.g., custom-fork/stable)
3. Validates error handling for invalid formats
4. Reports test results

Running the Tests

To run the tests with standard output:

./run_tests.sh

For detailed debugging output:

./run_tests.sh --verbose

Tested Version Formats

The script tests the following version formats:

Format	Example	Description
Channel	stable, beta	Flutter release channels
Semantic Version	2.10.0	Specific Flutter version
V-prefixed Version	v2.10.0	Version with 'v' prefix
Version with Channel	2.10.0@beta	Specific version from a channel
V-prefixed with Channel	v2.10.0@beta	V-prefixed version from a channel
Fork with Channel	custom-fork/stable	Fork with specified channel

Error Cases

The script also validates proper rejection of invalid formats:

• Invalid channel specification (2.10.0@invalid)
• Custom build with channel (custom_build@beta)
• Non-existent fork (unknown-fork/stable)

Test Results

After running the tests, review the output to ensure all tests passed. If any failures occur, the script will provide details about what went wrong.

For a complete record of test outcomes, refer to the TEST_RESULTS.md file which may be generated after running the tests.

Prerequisites

• Dart SDK must be installed and available in PATH
• Flutter SDK must be installed and available in PATH
• The script should be run from the test/fixtures/sample_app directory

Troubleshooting

If some tests are skipped, it may be because:

1. The required Flutter versions are not installed
2. The list command in the FVM implementation has issues

In these cases, the script will continue with available tests and provide warnings about what was skipped.