public void TestNoItemsInList()
{
var statistics = new List <CovidStatistic>();
var monthlyCalculator = new MonthlyCovidStatisticsCalculator(statistics);
Assert.ThrowsException <InvalidOperationException>(() => monthlyCalculator.FindAverageTotalTests(statistics));
}
public void TestMultipleItemsInList()
{
var statistics = new List <CovidStatistic> {
new CovidStatistic(new DateTime(2020, 10, 17), 100, 100, 100, 100),
new CovidStatistic(new DateTime(2020, 10, 17), 300, 300, 100, 300)
};
var monthlyCalculator = new MonthlyCovidStatisticsCalculator(statistics);
var result = monthlyCalculator.FindAverageTotalTests(statistics);
Assert.AreEqual(400, result);
}