public void SumTest_輸入GroupSize為負數_預期會拋ArgumentException()
{
//arrange
var products = StubProducts();
var target = new CalculationByGroupFromCollection();
var expected = new int[] { 50, 66, 60 };
int groupSize = -1;
//act
Action actual = () => target.Sum <Product>(products, groupSize, (p) => p.Revenue);
//assert
actual.ShouldThrow <ArgumentException>();
}
public void SumTest_由StubProducts中3筆一組_取Cost總和分別為_6_15_24_21()
{
//arrange
var products = StubProducts();
var target = new CalculationByGroupFromCollection();
var expected = new List <int> {
6, 15, 24, 21
};
int groupSize = 3;
//act
var actual = target.Sum <Product>(products, groupSize, (p) => p.Cost);
//assert
expected.ToExpectedObject().ShouldEqual(actual);
}
public void SumTest_由StubProducts中4筆一組_取Revenue總和分別為_50_66_60()
{
//arrange
var products = StubProducts();
var target = new CalculationByGroupFromCollection();
var expected = new List <int> {
50, 66, 60
};
int groupSize = 4;
//act
var actual = target.Sum <Product>(products, groupSize, (p) => p.Revenue);
//assert
expected.ToExpectedObject().ShouldEqual(actual);
}