/// <summary>
/// Ensure all <see cref="ConfigurableProperties"/> can be converted back and forth to a string in order to be both
/// readable from and writable to an <see cref="IPropertyBag"/>.
/// </summary>
protected void VerifyAllPropertiesSupportRoundTripStringConversion()
{
ConfigurableProperties.ForEach(
p => {
var converter = TypeDescriptor.GetConverter(p.PropertyType);
var value = new SpecimenContext(CreateAutoFixture()).Resolve(p);
if (!converter.CanConvertTo(typeof(string)))
{
throw new NotSupportedException(
$"{converter.GetType().Name} TypeConverter cannot convert a {p.PropertyType.Name} to a string. "
+ $"{p.PropertyType.Name} must have a dedicated TypeConverter that supports back-and-forth string conversions.");
}
var serializedValue = (string)converter.ConvertTo(value, typeof(string));
if (serializedValue.IsNullOrEmpty())
{
throw new NotSupportedException(
$"The conversion to string made by {converter.GetType().Name} of the {p.PropertyType.Name} {p.Name} property returned null for {value}.");
}
if (!converter.CanConvertFrom(typeof(string)))
{
throw new NotSupportedException(
$"{converter.GetType().Name} TypeConverter cannot convert a string to a {p.PropertyType.Name}. "
+ $"{p.PropertyType.Name} must have a dedicated TypeConverter that supports back-and-forth string conversions.");
}
var deserializedValue = converter.ConvertFrom(serializedValue);
if (deserializedValue == null)
{
throw new NotSupportedException(
$"The conversion from string made by {converter.GetType().Name} of the {p.PropertyType.Name} {p.Name} property returned null for {serializedValue}.");
}
if (value is IEnumerable actualEnumerable &&
deserializedValue is IEnumerable deserializedEnumerable &&
actualEnumerable.SequenceEqual(deserializedEnumerable))
{
return;
}
if (!value.Equals(deserializedValue))
{
throw new NotSupportedException(
$"{converter.GetType().Name} TypeConverter could not perform a successful roundtrip conversion of {p.PropertyType.Name} {p.Name} for {value}. "
+ $"The failure to validate a successful roundtrip conversion could also be due to the fact that {p.PropertyType.Name} does not implement IEquatable<T>.");
}
});
}
