/// <summary>
/// Creates a new specimen based on a requested range.
/// </summary>
/// <param name="request">The request that describes what to create.</param>
/// <param name="context">A container that can be used to create other specimens.</param>
/// <returns>
/// A specimen created from a <see cref="RangedRequest"/> encapsulating the operand
/// type, the minimum and the maximum of the requested value, if possible; otherwise,
/// a <see cref="NoSpecimen"/> instance.
/// </returns>
public object Create(object request, ISpecimenContext context)
{
if (request == null)
{
return(new NoSpecimen());
}
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var rangeAttribute = TypeEnvy.GetAttribute <RangeAttribute>(request);
if (rangeAttribute == null)
{
return(new NoSpecimen());
}
var memberType = GetMemberType(rangeAttribute, request);
var rangedRequest =
new RangedRequest(
memberType,
rangeAttribute.OperandType,
rangeAttribute.Minimum,
rangeAttribute.Maximum);
return(context.Resolve(rangedRequest));
}
public static bool TryGetFromAttributes(object request, out Range range)
{
var minLengthAttribute = TypeEnvy.GetAttribute <MinLengthAttribute>(request);
var maxLengthAttribute = TypeEnvy.GetAttribute <MaxLengthAttribute>(request);
if (minLengthAttribute == null && maxLengthAttribute == null)
{
range = null;
return(false);
}
range = GetRange(minLengthAttribute, maxLengthAttribute);
return(true);
}
/// <summary>
/// Creates a new specimen based on a request.
/// </summary>
/// <param name="request">The request that describes what to create.</param>
/// <param name="context">A context that can be used to create other specimens.</param>
/// <returns>
/// The requested specimen if possible; otherwise a <see cref="NoSpecimen"/> instance.
/// </returns>
public object Create(object request, ISpecimenContext context)
{
if (request == null)
{
return(new NoSpecimen());
}
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var regularExpressionAttribute = TypeEnvy.GetAttribute <RegularExpressionAttribute>(request);
if (regularExpressionAttribute == null)
{
return(new NoSpecimen());
}
return(context.Resolve(new RegularExpressionRequest(regularExpressionAttribute.Pattern)));
}
/// <summary>
/// Creates a new specimen based on a specified length of characters that are allowed.
/// </summary>
/// <param name="request">The request that describes what to create.</param>
/// <param name="context">A container that can be used to create other specimens.</param>
/// <returns>
/// A specimen created from a <see cref="RangedNumberRequest"/> encapsulating the operand
/// type, the minimum and the maximum of the requested number, if possible; otherwise,
/// a <see cref="NoSpecimen"/> instance.
/// </returns>
public object Create(object request, ISpecimenContext context)
{
if (request == null)
{
return(new NoSpecimen());
}
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var stringLengthAttribute = TypeEnvy.GetAttribute <StringLengthAttribute>(request);
if (stringLengthAttribute == null)
{
return(new NoSpecimen());
}
return(context.Resolve(new ConstrainedStringRequest(stringLengthAttribute.MinimumLength, stringLengthAttribute.MaximumLength)));
}