1  // Copyright (c) Microsoft Corporation
 2  // The Microsoft Corporation licenses this file to you under the MIT license.
 3  // See the LICENSE file in the project root for more information.
 4  
 5  // The goal of this class is to just mock out the Microsoft.VariantAssignment close source objects
 6  namespace Microsoft.VariantAssignment.Contract
 7  {
 8      public class EmptyVariantAssignmentResponse : IVariantAssignmentResponse
 9      {
10          /// <summary>
11          /// Singleton instance of <see cref="EmptyVariantAssignmentResponse"/>.
12          /// </summary>
13          public static readonly IVariantAssignmentResponse Instance = new EmptyVariantAssignmentResponse();
14  
15          public EmptyVariantAssignmentResponse()
16          {
17          }
18  
19          public long DataVersion => 0;
20  
21          public string Thumbprint => string.Empty;
22  
23          /// <inheritdoc/>
24          public IReadOnlyCollection<IAssignedVariant> AssignedVariants => Array.Empty<IAssignedVariant>();
25  
26          /// <inheritdoc/>
27  #pragma warning disable CS8603 // Possible null reference return.
28          public IFeatureVariable GetFeatureVariable(IReadOnlyList<string> path) => null;
29  #pragma warning restore CS8603 // Possible null reference return.
30  
31          /// <inheritdoc/>
32          public IReadOnlyList<IFeatureVariable> GetFeatureVariables(IReadOnlyList<string> prefix) => Array.Empty<IFeatureVariable>();
33  
34          public void Dispose()
35          {
36              Dispose(true);
37              GC.SuppressFinalize(this);
38          }
39  
40          protected virtual void Dispose(bool disposing)
41          {
42          }
43  
44          string IVariantAssignmentResponse.GetAssignmentContext()
45          {
46              throw new NotImplementedException();
47          }
48  
49          IReadOnlyList<IFeatureVariable> IVariantAssignmentResponse.GetFeatureVariables()
50          {
51              throw new NotImplementedException();
52          }
53      }
54  }