public void SingletonTotalPopulationTest()
{
var cf = new ConfigurableRecordFinder(new DummyDataBase());
var names = new[] { "alpha", "gamma" };
int totalPopulation = cf.GetTotalPopulation(names);
Assert.AreEqual(totalPopulation, 4);
}
public void ConfigurablePopulationTest()
{
var rf = new ConfigurableRecordFinder(new DummyDatabase());
var names = new[] { "alpha", "gamma" };
int tp = rf.GetTotalPopulation(names);
Assert.That(tp, Is.EqualTo(4));
}
public void DependantTotalPopulationTest()
{
var db = new DummyDatabase();
var rf = new ConfigurableRecordFinder(db);
Assert.That(
rf.GetTotalPopulation(new[] { "alpha", "gamma" }),
Is.EqualTo(4));
}
public void ConfigurableTotalPopulationTest()
{
//database for test environment
var rf = new ConfigurableRecordFinder(new DummyDatabase());
var names = new[] { "alpha", "gamma" };
var tp = rf.GetTotalPopulation(names);
Assert.That(tp, Is.EqualTo(1 + 3));
}
public void ConfigurablePopulationTest()
{
// now in the ConfigurableRecordFinder we provide the db we want to use, for the test, will be the dummy one
var rf = new ConfigurableRecordFinder(new DummyDatabase());
// In this test we don't need to find records from the production db, we faked ones already
var names = new[] { "alpha", "gamma" };
int tp = rf.GetTotalPopulation(names);
Assert.That(tp, Is.EqualTo(4));
}
static void Main(string[] args)
{
var db = SingletonDatabase.Instance;
var db2 = SingletonDatabase.Instance;
Console.WriteLine(db.GetPopulation("Kitchener"));
Console.WriteLine($"db.Equals(db2): {db.Equals(db2)}");
Console.WriteLine($"SingletonDatabase.Count: {SingletonDatabase.Count}");
var rf = new SingletonRecordFinder();
Console.WriteLine($"Total population of Kitchener and Waterloo: {rf.GetTotalPopulation(new [] { "Kitchener", "Waterloo" })}");
var crf = new ConfigurableRecordFinder(new DummyDatabase());
Console.WriteLine($"Total population of Kitchener and Waterloo with ConfigurableRecordFinder and DummyDatabase injected: {crf.GetTotalPopulation(new[] { "Kitchener", "Waterloo" })}");
}
static void Main(string[] args)
{
Console.WriteLine("Singleton through dependency injection");
var collection = new ServiceCollection();
collection.AddSingleton <IDatabase, OrdinaryDatabse>();
var serviceProvider = collection.BuildServiceProvider();
var service = serviceProvider.GetService <IDatabase>();
var tokyoPop = service.GetPopulation("Tokyo");
Console.WriteLine($"Tokyo population is {tokyoPop}");
SingletonRecordFinder recordFinder = new SingletonRecordFinder();
var result = recordFinder.GetToalPopulation(new[] { "Tokyo", "New York" });
Console.WriteLine($"Total Population {result}");
var configurableRecordFinder = new ConfigurableRecordFinder(new DummyDatabase());
var total = configurableRecordFinder.GetToalPopulation(new[] { "New York", "Tokyo" });
Console.WriteLine(total);
Console.WriteLine("A variation of singleton, which is MonoState");
var ceo1 = new MonoState()
{
Name = "Payam",
Position = "CEO",
Age = 100
};
var ceo2 = new MonoState()
{
Name = "Jack",
Position = "Developer",
Age = 90
};
Console.WriteLine(ceo1);
Console.WriteLine(ceo2);
}
