matcher

• Note: This may break some existing tests, as the behavior does change.

• Apis have been updated to express intent of the existing code and how it handled nulls.

Many improvements to TypeMatcher

• Can now be used directly as const TypeMatcher<MyType>().

• Added a type parameter to specify the target Type.

  • Made the name constructor parameter optional and marked it deprecated. It's redundant to the type parameter.

• Migrated all isType matchers to TypeMatcher.

• Added a having function that allows chained validations of specific features of the target type.

  /// Validates that the object is a [RangeError] with a message containing
  /// the string 'details' and `start` and `end` properties that are `null`.
  final _rangeMatcher = isRangeError
     .having((e) => e.message, 'message', contains('details'))
     .having((e) => e.start, 'start', isNull)
     .having((e) => e.end, 'end', isNull);
  

Deprecated the isInstanceOf class. Use TypeMatcher instead.

Improved the output of Matcher instances that fail due to type errors.

Fixed unorderedMatches in cases where the matchers may match more than one element and order of the elements doesn't line up with the order of the matchers.

Add containsAll matcher for Iterables. This Matcher checks that all values/matchers in an expected iterable are satisfied by an element in the value without allowing the same value to satisfy multiple matchers.

Fixed small documentation issues.

Fixed small issue in StringEqualsMatcher.

Update to support future Dart language changes.

Make predicate and pairwiseCompare generic methods to allow typed functions to be passed to them as arguments.

Make internal implementations take better advantage of type promotion to avoid dynamic call overhead.

Moved a number of members to the unittest package.

• TestFailure, ErrorFormatter, expect, fail, and 'wrapAsync'.
• completes, completion, throws, and throwsA Matchers.
• The Throws class.
• All of the throws...Error Matchers.

Removed FailureHandler, DefaultFailureHandler, configureExpectFailureHandler, and getOrCreateExpectFailureHandler. Now that expect is in the unittest package, these are no longer needed.

Removed the name parameter for isInstanceOf. This was previously deprecated, and is no longer necessary since all language implementations now support converting the type parameter to a string directly.

Matchers related to bad language use have been removed. These represent code structure that should rarely or never be validated in tests.

• isAbstractClassInstantiationError
• throwsAbstractClassInstantiationError
• isFallThroughError
• throwsFallThroughError

Added types to a number of method arguments.

The structure of the library and test code has been updated.