DART

dart test matcher expecting a field value

var hasCorrectArea = predicate((rect) => rect.area == rect.length * rect.width,
    "has correct area");

expect(myRect, hasCorrectArea);

dart test matcher expecting a field value

var hasCorrectArea = predicate((rect) => rect.area == rect.length * rect.width,
    "has correct area");

expect(myRect, hasCorrectArea);