public void NotCircleTest()
{
// Arrange
var notCircle = new TestFigure();
var calculator = new CircleAreaCalculator();
// Act
var calculatedArea = calculator.TryCalculateArea(notCircle);
// Assert
Assert.Null(calculatedArea);
}
public void CircleCalculatorTest(double radius, double area)
{
// Arrange
var circle = new Circle(radius);
var calculator = new CircleAreaCalculator();
// Act
var calculatedArea = calculator.TryCalculateArea(circle);
// Assert
Assert.AreEqual(area, calculatedArea, DoubleEquality.Epsilon);
}