public void TestCommonCase()
{
var averageKeeperFactory = new AverageKeeperFactoryMock();
var keeper = averageKeeperFactory.Instance;
var selectorByCountryAndAge = new SelectorByCountryAndAgeMock();
var singleAverageGetter = new SingleAverageGetter(averageKeeperFactory, selectorByCountryAndAge);
var source = GenerateStorage;
var age = 20;
var country = "USA";
var result = singleAverageGetter.Calculate(source, age, country);
Assert.Equal(1, selectorByCountryAndAge.RequestsCount);
Assert.True(selectorByCountryAndAge.LastRequestedSource.SequenceEqual(source));
Assert.Equal(age, selectorByCountryAndAge.LastRequestedAge);
Assert.Equal(country, selectorByCountryAndAge.LastRequestedCountry);
Assert.True(keeper.LastRequestedAnswer.HasValue);
Assert.Equal(result, keeper.LastRequestedAnswer.Value);
Assert.Equal(1, keeper.RequestsCount);
Assert.True(keeper.IncomingValues.SequenceEqual(new List <double>()
{
2000, 2500, 1500
}));
}
public void TestNotRequestedResult()
{
var averageKeeperFactory = new AverageKeeperFactoryMock();
var keeper = averageKeeperFactory.Instance;
var selectorByCountryAndAge = new SelectorByCountryAndAgeMock();
var singleAverageGetter = new SingleAverageGetter(averageKeeperFactory, selectorByCountryAndAge);
Assert.Equal(0, selectorByCountryAndAge.RequestsCount);
Assert.True(selectorByCountryAndAge.LastRequestedSource == default(IEnumerable <Person>));
Assert.False(selectorByCountryAndAge.LastRequestedAge.HasValue);
Assert.True(string.IsNullOrEmpty(selectorByCountryAndAge.LastRequestedCountry));
Assert.False(keeper.LastRequestedAnswer.HasValue);
Assert.Equal(0, keeper.RequestsCount);
Assert.False(keeper.IncomingValues.Any());
}