public void User1_reassigns_WI_User2_to_User3_mail_sent_to_both()
        {
            // arrange
            var provider = TestProviderFactory.MockedAzureDevOpsFieldLookupProvider("user3").Object;
            provider.SetChangedBy("user1");
            provider.SetTestAlertItems(GenericTestData.AssignedToChangedAlerts("user2", "user3"));

            // act
            var actual = provider.GetInterestedEmailAddresses("test.com");

            // assert
            Assert.AreEqual("[email protected],[email protected]", actual);
        }
        public void User_changes_details_of_WI_assigned_to_self_no_mail_sent()
        {
            // arrange
            var provider = TestProviderFactory.MockedAzureDevOpsFieldLookupProvider("user1").Object;
            provider.SetChangedBy("user1");
            provider.SetTestAlertItems (GenericTestData.DummyAlerts());
         
            // act
            var actual = provider.GetInterestedEmailAddresses("test.com");

            // assert
            Assert.AreEqual(string.Empty, actual);
        }