pkg/matcher: reapply 36881,36896 working around Issue 19173

Reverted in 36912

R=sigmund@google.com

Review URL: https://codereview.chromium.org//317733006

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/matcher@37036 260f80e4-7a28-3924-810f-c04153c831b5
27 files changed
tree: b94e0abf100cb2745562a8a4ece4afe19fefcef4
  1. CHANGELOG.md
  2. LICENSE
  3. README.md
  4. lib/
  5. pubspec.yaml
  6. test/
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.