public void SingletonTotalPopulationTest()
{
var rf = new SingletonRecordFinder();
var names = new[] { "Seoul", "New York" };
int tp = rf.GetTotalPopulation(names);
Assert.That(tp, Is.EqualTo(17800000 + 17500000));
}
public void SingletonTotalPopulationTest()
{
var rf = new SingletonRecordFinder();
var names = new[] { "Seoul", "Mexico City" };
int tp = rf.GetTotalPopulation(names);
Assert.AreEqual(17500000 + 17400000, tp);
}
public void ConfigurablePopulationTest()
{
SingletonRecordFinder singletonRecordFinder = new SingletonRecordFinder();
int population = singletonRecordFinder.GetTotalPopulation(new List <string>()
{
"Seoul", "Tokyo"
});
Assert.AreEqual(33200000 + 17500000, population);
}
public void SingletonTotalPopulationTest()
{
// Singleton database is used as live (production) database test
// data of live database may changed by user
// so we need to create another database for test environment
var rf = new SingletonRecordFinder();
var names = new[] { "Seoul", "Mexico City" };
var tp = rf.GetTotalPopulation(names);
Assert.That(tp, Is.EqualTo(17500000 + 17400000));
}
public void SingletonTotalPopulationTest()
{
// Here we're testing on a 'live db'
// One of the consequences is that we need to look at the DB for the values we want to test
var rf = new SingletonRecordFinder();
// If somebody removes from the db one of the entries, the test will break
var names = new[] { "Seoul", "Mexico City", "Osaka" };
int tp = rf.GetTotalPopulation(names);
Assert.That(tp, Is.EqualTo(17500000 + 17400000 + 16425000));
// to be independent from a live db is very expensive
// what you want to do is to fake the object instead the real db
// In this particular scenario, to fake it isn't possible because RecordFinder is using a hardcoded reference
}
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" })}");
}