BaseMatcher Class
BaseMatcher is the base class for all matchers. To implement a new matcher, either add a class that implements from IMatcher or a class that inherits from Matcher. Inheriting from Matcher has the benefit that a default implementation of describeMismatch will be provided.
Subclasses
Implements
Constructors
Code const BaseMatcher() #
const BaseMatcher();
Methods
Code Description describe(Description mismatchDescription) #
Creates a textual description of a matcher, by appending to mismatchDescription.
abstract Description describe(Description mismatchDescription);
Code Description describeMismatch(item, Description mismatchDescription, MatchState matchState, bool verbose) #
Generates a description of the matcher failed for a particular item, by appending the description to mismatchDescription. It does not check whether the item fails the match, as it is only called after a failed match. There may be additional info about the mismatch in matchState.
Description describeMismatch(item, Description mismatchDescription,
MatchState matchState, bool verbose) =>
mismatchDescription.add('was ').addDescriptionOf(item);
Code bool matches(item, MatchState matchState) #
Tests the matcher against a given item and return true if the match succeeds; false otherwise. matchState may be used to return additional info for the use of describeMismatch.
abstract bool matches(item, MatchState matchState);