Bump SDK constraints for pub (#158)

Use a 2.12.0 lower bound since pub does not understand allowed
experiments for earlier versions.

Use a 3.0.0 upper bound to avoid a warning in pub and to give some
flexibility in publishing for stable.
2 files changed
tree: ba2e264be479ae3771092d32cd7b60a6d4f1ba0e
  1. lib/
  2. test/
  3. .gitignore
  4. .test_config
  5. .travis.yml
  6. analysis_options.yaml
  7. CHANGELOG.md
  8. LICENSE
  9. pubspec.yaml
  10. README.md
README.md

Support for specifying test expectations, such as for unit tests.

The matcher library provides a third-generation assertion mechanism, drawing inspiration from Hamcrest.

For more information, see Unit Testing with Dart.