public void IsSingleton_NotSingletonObject_ReturnsFalse()
{
SingletonTester
.IsSingleton(() => new object())
.Should()
.BeFalse();
}
public void IsSingleton_PassASingleton_ReturnsTrue()
{
var isSingleton = SingletonTester.IsSingleton(
SingletonTesterData.GetSingletonObject);
Assert.That(isSingleton, Is.EqualTo(true));
}
public void IsSingleton_SingletonObject_ReturnsTrue()
{
SingletonTester
.IsSingleton(() => SafeSingleton.Instance)
.Should()
.BeTrue();
}
public void IsSingleton_PassANonSingleton_ReturnsFalse()
{
var isSingleton = SingletonTester.IsSingleton(
SingletonTesterData.GetNonSingletonObject);
Assert.That(isSingleton, Is.EqualTo(false));
}
public void Test()
{
var obj = new object();
Assert.IsTrue(SingletonTester.IsSingleton(() => obj));
Assert.IsFalse(SingletonTester.IsSingleton(() => new object()));
}
public async Task SingletonConcurrenctCloseOpenTests()
{
var createTcs = new TaskCompletionSource <object>();
var closeTcs = new TaskCompletionSource <object>();
var singleton = new SingletonTester(createTcs.Task, closeTcs.Task);
var creating = singleton.GetOrCreateAsync(TimeSpan.FromDays(1000));
var closing = singleton.CloseAsync();
closeTcs.SetResult(new object());
await closing;
createTcs.SetResult(new object());
await creating;
try
{
await singleton.GetOrCreateAsync(TimeSpan.FromDays(1000));
Assert.Fail("Singleton should throw an ObjectDisposedException");
}
catch (ObjectDisposedException) { }
var createdObj = GetInternalProperty <object>(singleton, "Value");
createdObj.Should().BeNull("A closed Singleton shouldn't have a value!");
}
public void IsSingletonTest()
{
// Arrange
// Act
var actual = SingletonTester.IsSingleton(() => SingletonDatabase.Instance);
// Assert
Assert.IsTrue(actual);
}
public async Task SingletonConcurrentCloseOpenTests()
{
var createTcs = new TaskCompletionSource <object>();
var closeTcs = new TaskCompletionSource <object>();
var singleton = new SingletonTester(createTcs.Task, closeTcs.Task);
var creating = singleton.GetOrCreateAsync(TimeSpan.FromSeconds(1));
var closing = singleton.CloseAsync();
closeTcs.SetResult(new object());
await closing;
createTcs.SetResult(new object());
await creating;
await Assert.ThrowsAsync <ObjectDisposedException>(() => singleton.GetOrCreateAsync(TimeSpan.FromSeconds(1)));
var createdObj = GetInternalProperty <object>(singleton, "Value");
Assert.Null(createdObj);
}
static void Main(string[] args)
{
Console.WriteLine(SingletonTester.IsSingleton(CreateNonSingletonPerson));
Console.WriteLine(SingletonTester.IsSingleton(CreateSingletonPerson));
}
static void Main(string[] args)
{
Console.WriteLine(SingletonTester.IsSingleton(() => { return(new List <string>()); }));
}
