protected override byte CreateValue(ValueProviderContext <byte> context)
{
var randomBytes = new byte[1];
context.Random.NextBytes(randomBytes);
return(randomBytes[0]);
}
protected override Guid CreateValue(ValueProviderContext <Guid> context)
{
var guid = new byte[16];
context.Random.NextBytes(guid);
return(new Guid(guid));
}
protected override DateTime CreateValue(ValueProviderContext <DateTime> context)
{
var start = new DateTime(1900, 1, 1);
var end = new DateTime(2100, 1, 1);
var range = (end - start).Days;
return(start.AddDays(context.Random.Next(range)).AddTicks(context.Random.Next(0, TimeSpan.TicksPerDay)));
}
Arrangement <RandomSyllabileGenerator, Dummy, object, object> SeededContext(int seed)
{
return(x =>
{
var customValueProviderObjectContext = new CustomValueProviderObjectContext(new DefaultRandom(seed));
var customValueProviderContext = new CustomValueProviderContext(customValueProviderObjectContext);
Context = customValueProviderContext;
});
}
protected override AbstractVehicle CreateValue(ValueProviderContext <AbstractVehicle> context)
{
return(context.TargetValueType == typeof(AirVehicle)
? (AbstractVehicle) new AirVehicle {
Engine = new PropellorEngine()
}
: new LandVehicle {
Tire = new Tire()
});
}
/// <summary>
/// Fills a stringBuilder within the given context with a random syllabile
/// </summary>
/// <param name="context"></param>
/// <param name="stringBuilder"></param>
public void Fill(ValueProviderContext <string> context, StringBuilder stringBuilder)
{
var len = context.Random.Next(_min, _max);
for (var i = 0; i < len; i++)
{
var c = i % 2 == 0 ? s_consonants[context.Random.Next(s_consonants.Length)] : s_vowels[context.Random.Next(s_vowels.Length)];
stringBuilder.Append(c);
}
}
protected override IEnumerable <TMember> CreateManyValues(
ValueProviderContext <TMember> context,
[CanBeNull] IList <object> metadatas, int itemCount)
{
var typeInfo = context.Advanced.FastReflection.GetTypeInfo(context.Advanced.Key.Type);
var ctorValuesCollections = InitializeCtorValues(itemCount, typeInfo);
var ctorMembers = typeInfo.CtorArguments.Select(
c => c.ToMember(context.Advanced.ParameterConversionService)).ToList();
var sortedCtorMembers = context.Advanced.MemberSorter.Sort(ctorMembers, context.Advanced.Key).ToList();
//Note: We use a dictionary because when we have many ctor members, we gain some performance.
var toUnsortedDictionary = ctorMembers.Select((value, index) => new { value, index }).ToDictionary(x => x.value, x => x.index);
var sortedToUnsorted = sortedCtorMembers.Select(member => toUnsortedDictionary[member]).ToList();
List <object> resolvedMetadatas = null;
for (var argumentIndex = 0; argumentIndex < sortedCtorMembers.Count; argumentIndex++)
{
var ctorMember = sortedCtorMembers[argumentIndex];
var unsortedArgumentIndex = sortedToUnsorted[argumentIndex];
var memberKey = context.Advanced.Key.CreateKey(ctorMember);
//we only resolve once per parent (not for each member), so the data is shared between all members.
if (resolvedMetadatas == null && context.Advanced.MetadataResolver.NeedsMetadata(memberKey))
{
var dependendArguments = sortedCtorMembers.Take(argumentIndex).ToList();
var metadataContexts = GetMetadataContexts(
context.Advanced.Key,
dependendArguments,
ctorValuesCollections,
sortedToUnsorted,
context.TestDataGenerator).ToList();
resolvedMetadatas = context.Advanced.MetadataResolver.Resolve(memberKey, metadataContexts).ToList();
}
//Note: Here we have a recursion to the compound value provider. e.g. other immutable types could be a ctor argument
var ctorMemberValues = context.Advanced.AdvancedTestDataGenerator.CreateMany(memberKey, resolvedMetadatas, itemCount, maxRecursionDepth: 2);
for (var valueIndex = 0; valueIndex < ctorMemberValues.Count; valueIndex++)
{
ctorValuesCollections[valueIndex][unsortedArgumentIndex] = ctorMemberValues[valueIndex];
}
}
var typeFactoryWithArguments = FastActivator.GetFactory(context.Advanced.Key.Type, typeInfo.CtorArguments);
return(ctorValuesCollections.Select(ctorValues => typeFactoryWithArguments(ctorValues)).Cast <TMember>());
}
protected override Enum CreateValue(ValueProviderContext <Enum> context)
{
var enumNames = Enum.GetNames(context.TargetValueType);
if (enumNames.Length == 0)
{
return(null);
}
var randomValue = enumNames[context.Random.Next(enumNames.Length)];
return((Enum)Enum.Parse(context.TargetValueType, randomValue));
}
protected override IList <TResult> CreateValue([NotNull] ValueProviderContext <IList <TResult> > context)
{
var exclusiveMaxItemCount = _maxItemCount + 1;
var numberOfReturnedItems = context.Random.Next(_minItemCount, exclusiveMaxItemCount);
Trace.Assert(numberOfReturnedItems <= _items.Count);
Func <int> randomIntGenerator =
() => context.Random.Next(int.MinValue, int.MaxValue);
return(Enumerable.Range(0, _items.Count)
.Shuffle(randomIntGenerator)
.Take(numberOfReturnedItems)
.Select(i => _items[i])
.Select(_conversionFunc)
.ToList());
}
protected override AbstractVehicle CreateValue(ValueProviderContext <AbstractVehicle> context)
{
if (context.TargetValueType == typeof(AirVehicle))
{
return(new AirVehicle {
Engine = new JetEngine {
FuelUsePerSecond = 20
}
});
}
if (context.TargetValueType == typeof(LandVehicle))
{
return(new LandVehicle {
Tire = new Tire {
Diameter = 10
}
});
}
throw new InvalidOperationException("property of type " + context.TargetValueType + " is not supported by " + GetType().FullName);
}
protected override TMember CreateValue(ValueProviderContext <TMember> context)
{
//we implement it like this, to be able to make some performance optimizations in the create many method.
return(CreateManyValues(context, context.InternalMetadata == null ? null : new[] { context.InternalMetadata }, 1).Single());
}
protected override bool CreateValue(ValueProviderContext <bool> context)
{
return(context.Random.NextDouble() >= 0.5d);
}
protected override sbyte CreateValue(ValueProviderContext <sbyte> context)
{
return((sbyte)context.Random.Next(sbyte.MinValue, sbyte.MaxValue));
}
protected override TMember CreateValue(ValueProviderContext <TMember> context)
{
return(_valueFunc(context));
}
protected override object CreateValue(ValueProviderContext <object> context)
{
return(_valueFunc(context));
}
protected override decimal CreateValue(ValueProviderContext <decimal> context)
{
return(context.Random.Next(decimal.MinValue));
}
protected override short CreateValue(ValueProviderContext <short> context)
{
return(context.Random.NextShort());
}
protected override IVector CreateValue(ValueProviderContext <IVector> context)
{
return(new Vector {
Id = _vectorId
});
}
protected override TResult CreateValue([NotNull] ValueProviderContext <TResult> context)
{
var item = _items[context.Random.Next(0, _items.Count)];
return(_conversionFunc(item));
}
protected override char CreateValue(ValueProviderContext <char> context)
{
return(context.Random.NextDouble() >= 0.2d ? (char)context.Random.Next(33, 126) : (char)context.Random.Next(161, 591));
}