public void Filter_NegativeConsumption_ThrowsException()
{
// Arrange
var consumptionkWh = -1;
var db = new ProductRepositoryMock();
var filter = GetFilter(consumptionkWh);
// Act
var result = filter.Filter(db.GetProducts()).ToArray();
// Assert
Assert.Fail("Exception expected");
}
public void Filter_ZeroConsumption_ProductsWithDefaultValues()
{
// Arrange
var consumptionkWh = 0;
var db = new ProductRepositoryMock();
var filter = GetFilter(consumptionkWh);
var expectedAnnualCosts = new double[] { 60, 800 };
// Act
var result = filter.Filter(db.GetProducts()).ToArray();
// Assert
for (int i = 0; i < expectedAnnualCosts.Length - 1; i++)
{
Assert.AreEqual(expectedAnnualCosts[i], result[i].AnnualCost);
}
}
public void Filter_ExampleRates_MatchedExampleValues()
{
// Arrange
var db = new ProductRepositoryMock();
var consumptionRates = new int[] { 3500, 4500, 6000 };
var expectedAnnualCosts = new double[, ] {
{ 800.0, 830.0 }, { 950.0, 1050.0 }, { 1380.0, 1400.0 }
};
// Act
var idx = 0;
foreach (var rate in consumptionRates)
{
var filter = GetFilter(rate);
var result = filter.Filter(db.GetProducts()).ToArray();
// Assert
Assert.AreEqual(expectedAnnualCosts[idx, 0], result[0].AnnualCost);
idx++;
}
}