public void DeleteAccount_Test()
{
var accessor = new InMemoryPartitionedUserTokenCacheAccessor(new NullLogger(), null);
var acc1 = TokenCacheHelper.CreateAccountItem("tenant1", "homeAccountId");
var acc2 = TokenCacheHelper.CreateAccountItem("tenant1", "homeAccountId2");
var acc3 = TokenCacheHelper.CreateAccountItem("tenant2", "homeAccountId");
// Assert: Delete on empty collection doesn't throw
accessor.DeleteAccount(acc1);
accessor.SaveAccount(acc1);
accessor.SaveAccount(acc2);
accessor.SaveAccount(acc3);
Assert.AreEqual(3, accessor.GetAllAccounts().Count);
// Assert: Delete on existing item
accessor.DeleteAccount(acc1);
Assert.AreEqual(2, accessor.GetAllAccounts().Count);
}