MOQ a réglé le retard pour retourner
Mock<IFoo> mockFoo = new Mock<IFoo>();
mockFoo.Setup(f => f.Bar())
.Callback(() => Thread.Sleep(1000))
.Returns("test");
string result = mockFoo.Object.Bar(); // will take 1 second to return
Assert.AreEqual("test", result);
VKangry