public void VerifyThatValidatePocoPropertiesAddsTelephoneNumberError()
{
Assert.DoesNotThrowAsync(async() => await this.session.Object.Open());
var telephoneNumber = new TelephoneNumber(Guid.NewGuid(), this.session.Object.Assembler.Cache, this.session.Object.Credentials.Uri);
this.person.TelephoneNumber.Add(telephoneNumber);
telephoneNumber.ValidatePoco();
this.session.Object.Assembler.Cache.TryAdd(new CacheKey(telephoneNumber.Iid, null),
new Lazy <Thing>(() => telephoneNumber));
this.viewModel.BindPocoErrors();
Assert.That(this.viewModel.Errors.Any(e => e.Error.Contains("The property Value is null or empty")));
Assert.DoesNotThrow(() => this.viewModel.FixCommand.Execute(null));
Assert.AreEqual(0, this.viewModel.Errors.Count(e => e.Error.Contains("The property Value is null or empty")));
Assert.DoesNotThrowAsync(async() => await this.session.Object.Close());
}