public async Task CanFindByUsername()
{
AccountsClient client = new AccountsClient(GrpcChannel);//_serviceProvider.GetRequiredService<AccountsClient>();
Assert.NotNull(client);
FindUserResponse response = await client.FindByUserNameAsync(new StringInputParameter()
{
Value = "mickeymouse"
}); // UserManager is NOT case sensitive!
Assert.NotNull(response);
Assert.NotNull(response.Response);
Assert.True(response.Response.Success);
Assert.Empty(response.Response.Errors);
Assert.False(string.IsNullOrEmpty(response.Id));
Assert.Equal("41532945-599e-4910-9599-0e7402017fbe", response.Id);
}