Query string match on DateTimeOffset is not working

Hi,

I am sending two values via a query string and I am trying to configure wiremock to respond when these two values come through. First is an int and it works fine. Second is a DateTimeOffset in the following format:

"yyyy-MM-ddTHH\\:mm\\:ss.fffzzz"

I have tried using the ExactValue matcher as so:

public static void AddQueryStringValueMatch(this RequestModel requestModel, KeyValuePair<string, string> queryStringItem)
        {
            var queryStringMatch = new ParamModel
            {
                IgnoreCase = true,
                Name = queryStringItem.Key,
                Matchers = new[]
                {
                    new MatcherModel
                    {
                        Name = "ExactMatcher",
                        Pattern = queryStringItem.Value,
                        IgnoreCase = true,
                        RejectOnMatch = false
                    }
                }
            };

            if (requestModel.Params == null)
                requestModel.Params = new List<ParamModel>();

            requestModel.Params.Add(queryStringMatch);
        }

This does not work and the following is returned from the wiremock:

[Error] : HttpStatusCode set to 400 System.ArgumentException: values at WireMock.Validation.Check.HasNoNulls[T](IList1 value, String parameterName) at WireMock.Matchers.ExactMatcher..ctor(MatchBehaviour matchBehaviour, String[] values) at WireMock.Serialization.MatcherMapper.Map(MatcherModel matcher) at System.Linq.Enumerable.SelectArrayIterator2.MoveNext() at System.Linq.Enumerable.CastIterator[TResult](IEnumerable source)+MoveNext() at System.Collections.Generic.LargeArrayBuilder1.AddRange(IEnumerable1 items) at System.Collections.Generic.EnumerableHelpers.ToArray[T](IEnumerable1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source) at WireMock.Server.FluentMockServer.InitRequestBuilder(RequestModel requestModel, Boolean pathOrUrlRequired) at WireMock.Server.FluentMockServer.DeserializeAndAddOrUpdateMapping(MappingModel mappingModel, Nullable`1 guid, String path) at WireMock.Server.FluentMockServer.MappingsPost(RequestMessage requestMessage)

However, when I use a standard dateTimeOffset.ToString(), then it works fine and the following is configured:

 {
          "Name": "dateTime",
          "IgnoreCase": true,
          "Matchers": [
            {
              "Name": "ExactMatcher",
              "Pattern": "6/20/2021 5:16:56 AM +01:00"
            }
          ]
        }

Is there any guidance/examples on how to work with datetime/datetimeoffset in a specific format? I thought it would treat it just like any other string.

[StefH]

I’ll create a new official version tonight and also a new docker.

[StefH]

The issue is that when you post a mapping like this:

"Params": [
            {
                "Name": "dateTime",
                "Matchers": [
                    {
                        "Name": "ExactMatcher",
                        "Pattern": "2019-09-19T18:02:31.7039950+02:00"
                    }
                ]
            }
        ]

The string value 2019-09-19T18:02:31.7039950+02:00 is actually converted to real DateTime, this means that some code fails.

I’ll investigate if this can be solved.