public void Arguments_AreNotAffectedAfterCreation()
{
// Arrange
double formula(IReadOnlyList <double> args) => - 1;
double[] arguments = new double[] { 1.0, 2.0, 3.0 };
CustomAreaCalculator sut = new CustomAreaCalculator(formula, arguments);
// Act
arguments[0] = 0.0;
// Assert
sut.Arguments[0].Should().Be(1.0);
}
public void Ctor_SetsProperties()
{
// Arrange
Func <IReadOnlyList <double>, double> formula = (args) => - 1;
double[] arguments = new double[] { 1.0, 2.0, 3.0 };
// Act
CustomAreaCalculator sut = new CustomAreaCalculator(formula, arguments);
// Assert
sut.Formula.Should().Be(formula);
sut.Arguments.Should().BeEquivalentTo(arguments);
}
public void CalculateArea_ReturnsExpectedValue()
{
// Arrange
double formula(IReadOnlyList <double> args) => (args[0] + args[1]) * args[2];
double[] arguments = new double[] { 1.0, 2.0, 3.0 };
CustomAreaCalculator sut = new CustomAreaCalculator(formula, arguments);
// Act
double actual = sut.CalculateArea();
// Assert
double expected = 9.0;
Tolerance.AreEqual(actual, expected).Should().BeTrue();
}