Specflow 3.1 throwing test failure message despite of catch block

[srikanth yadake]

Test code looks something like this

 if (table.ContainsColumn("DecisionGroupOptionId"))

         {

              foreach (var tableRow in table.Rows)

              {

                  try

                  {

                      var name = tableRow["DecisionGroupOptionId"];

                      var code = _catalogLookupContext.DecisionGroupOptions.FindIdByName(name);

                      tableRow["DecisionGroupOptionId"] = code;

                  }

                  catch (Exception)

                   {

                      //don't fail

                   }

                }

         }

            

        public virtual string FindIdByName(string name)

        {

            var item = _list.FirstOrDefault(r => r.Name == name);

            Assert.That(item, Is.Not.Null, "ID lookup by the name '{0}' failed. No such name exists in the map.", name);

            return item.Id;

        }

The testlog shows failure if name is null. Isnt this not supposed to show fail as there is catch block? Please help.

Test project uses assemblies like below

  [SpecFlow]   SpecFlow.Tools.MsBuild.Generation, Version=3.1.0.0, Culture=neutral, PublicKeyToken=0778194805d6db41

  [SpecFlow]   TechTalk.SpecFlow, Version=3.1.0.0, Culture=neutral, PublicKeyToken=0778194805d6db41

  [SpecFlow]   TechTalk.SpecFlow.Generator, Version=3.1.0.0, Culture=neutral, PublicKeyToken=0778194805d6db41

  [SpecFlow]   TechTalk.SpecFlow.Utils, Version=3.1.0.0, Culture=neutral, PublicKeyToken=0778194805d6db41

  [SpecFlow]   TechTalk.SpecFlow.Parser, Version=3.1.0.0, Culture=neutral, PublicKeyToken=0778194805d6db41

  [SpecFlow]   TechTalk.SpecFlow.NUnit.Generator.SpecFlowPlugin, Version=3.1.0.0, Culture=neutral, PublicKeyToken=0778194805d6db41