public async Task TestThat_SelectDistances_When_InputDistancesListIsValid_Returns_NotNullDistanceList()
{
// Arrange
var distanceSelector = new ClosestThreeDistancesSelector();
// Act
var distances = await distanceSelector.SelectDistances(MockObjects.AllShopDistances);
// Assert
Assert.NotNull(distances);
}
public async Task TestThat_SelectDistances_When_InputDistancesListIsValid_Returns_ExpectedNumberOfElements()
{
// Arrange
var distanceSelector = new ClosestThreeDistancesSelector();
// Act
var distances = await distanceSelector.SelectDistances(MockObjects.AllShopDistances);
// Assert
Assert.Equal(MockValues.DefaultOutputDistancesCount, distances.Count());
}
public async Task TestThat_SelectDistances_When_InputDistancesListIsLessThanThree_Throws_ArgumentOutOfRangeException()
{
// Arrange
var distanceSelector = new ClosestThreeDistancesSelector();
// Act
async Task Act() => await distanceSelector.SelectDistances(MockObjects.LessThanThreeShopDistances);
// Assert
await Assert.ThrowsAsync <ArgumentOutOfRangeException>(Act);
}