public void CheckLoginExistsNegativeTest()
{
IUserDataService service = new UserDataService();
Assert.That(service.CheckLoginExists("nonexistent login"), Is.False);
}
public void CheckLoginExistsLoginEmptyTest()
{
IUserDataService service = new UserDataService();
Assert.Throws <ArgumentException>(() => service.CheckLoginExists(""));
}
public void CheckLoginExistsPositiveTest()
{
IUserDataService service = new UserDataService();
Assert.That(service.CheckLoginExists("login"), Is.True);
}
public void CheckLoginExistsLoginNullTest()
{
IUserDataService service = new UserDataService();
Assert.Throws <ArgumentNullException>(() => service.CheckLoginExists(null));
}