public void Should_throw_argument_exception_if_numbers_sequence_is_null_or_empty(int[] numbers)
{
// Arrange
var sut = new CalculatorServcie();
// Act & Assert
Assert.Throws <ArgumentException>(() => sut.GetStatistics(numbers));
}
public void Should_return_correct_elements_count(int[] numbers, int expectedResult)
{
// Arrange
var sut = new CalculatorServcie();
// Act
var statistics = sut.GetStatistics(numbers);
// Assert
statistics.Should().NotBeNull();
statistics.ElementsCount.Should().Be(expectedResult);
}
public void Should_return_correct_average_value(int[] numbers, double expectedResult)
{
// Arrange
var sut = new CalculatorServcie();
// Act
var statistics = sut.GetStatistics(numbers);
// Assert
statistics.Should().NotBeNull();
statistics.AverageValue.Should().Be(expectedResult);
}