public void HasNumericIdentifier_WithNaN_ReturnsTrue()
 {
     var mappingRequest = new MappingRequest { SystemName = SourceSystemNames.Nexus, Identifier = "string" };
     Assert.IsFalse(mappingRequest.HasNumericIdentifier());
 }
 public void HasNumericIdentifier_WithInteger_ReturnsTrue()
 {
     var mappingRequest = new MappingRequest { SystemName = SourceSystemNames.Nexus, Identifier = "999" };
     Assert.IsTrue(mappingRequest.HasNumericIdentifier());
 }