-
Notifications
You must be signed in to change notification settings - Fork 337
/
RangeAttributeRelay.cs
63 lines (55 loc) · 2.36 KB
/
RangeAttributeRelay.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
using System;
using System.ComponentModel.DataAnnotations;
using AutoFixture.Kernel;
namespace AutoFixture.DataAnnotations
{
/// <summary>
/// Relays a request for a ranged request to a <see cref="RangedRequest"/>.
/// </summary>
public class RangeAttributeRelay : ISpecimenBuilder
{
private IRequestMemberTypeResolver requestMemberTypeResolver = new RequestMemberTypeResolver();
/// <summary>
/// Gets or sets the current IRequestMemberTypeResolver.
/// </summary>
public IRequestMemberTypeResolver RequestMemberTypeResolver
{
get => this.requestMemberTypeResolver;
set => this.requestMemberTypeResolver = value ?? throw new ArgumentNullException(nameof(value));
}
/// <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 (context is null) throw new ArgumentNullException(nameof(context));
var rangeAttribute = TypeEnvy.GetAttribute<RangeAttribute>(request);
if (rangeAttribute is null)
{
return new NoSpecimen();
}
var memberType = this.GetMemberType(rangeAttribute, request);
var rangedRequest = new RangedRequest(
memberType,
rangeAttribute.OperandType,
rangeAttribute.Minimum,
rangeAttribute.Maximum);
return context.Resolve(rangedRequest);
}
private Type GetMemberType(RangeAttribute rangeAttribute, object request)
{
if (this.RequestMemberTypeResolver.TryGetMemberType(request, out var memberType))
{
return memberType;
}
return Nullable.GetUnderlyingType(rangeAttribute.OperandType) ?? rangeAttribute.OperandType;
}
}
}