public void FindByUsername_WhenUsernameNotCached_ExpectToSearchLdapAndFindUser() { _authenticationService.Setup(m => m.FindUser(It.IsAny <string>())) .Returns(new OpenLdapAppUser { Username = "******" }); var user = _inMemoryUserStore.FindByUsername("username"); Assert.Equal("username", user.Username); _authenticationService.VerifyAll(); }