implemented adding claims as query strings to downstream route, removed some of the middleware injection optiosn as i have currently have no use case for them, general refactoring to use the OcelotMiddleware a bit more

test/Ocelot.UnitTests/QueryStrings/AddQueriesToRequestTests.cs

@@ -0,0 +1,153 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Claims;
+using Microsoft.AspNetCore.Http;
+using Moq;
+using Ocelot.Configuration;
+using Ocelot.Errors;
+using Ocelot.Infrastructure.Claims.Parser;
+using Ocelot.QueryStrings;
+using Ocelot.Responses;
+using Shouldly;
+using TestStack.BDDfy;
+using Xunit;
+
+namespace Ocelot.UnitTests.QueryStrings
+{
+    public class AddQueriesToRequestTests
+    {
+        private readonly AddQueriesToRequest _addQueriesToRequest;
+        private readonly Mock<IClaimsParser> _parser;
+        private List<ClaimToThing> _configuration;
+        private HttpContext _context;
+        private Response _result;
+        private Response<string> _claimValue;
+
+        public AddQueriesToRequestTests()
+        {
+            _parser = new Mock<IClaimsParser>();
+            _addQueriesToRequest = new AddQueriesToRequest(_parser.Object);
+        }
+
+        [Fact]
+        public void should_add_queries_to_context()
+        {
+            var context = new DefaultHttpContext
+            {
+                User = new ClaimsPrincipal(new ClaimsIdentity(new List<Claim>
+                {
+                    new Claim("test", "data")
+                }))
+            };
+
+            this.Given(
+                x => x.GivenAClaimToThing(new List<ClaimToThing>
+                {
+                    new ClaimToThing("query-key", "", "", 0)
+                }))
+                .Given(x => x.GivenHttpContext(context))
+                .And(x => x.GivenTheClaimParserReturns(new OkResponse<string>("value")))
+                .When(x => x.WhenIAddQueriesToTheRequest())
+                .Then(x => x.ThenTheResultIsSuccess())
+                .And(x => x.ThenTheQueryIsAdded())
+                .BDDfy();
+        }
+
+        [Fact]
+        public void if_query_exists_should_replace_it()
+        {
+            var context = new DefaultHttpContext
+            {
+                User = new ClaimsPrincipal(new ClaimsIdentity(new List<Claim>
+                {
+                    new Claim("test", "data")
+                })),
+            };
+
+            context.Request.QueryString = context.Request.QueryString.Add("query-key", "initial");
+
+            this.Given(
+                x => x.GivenAClaimToThing(new List<ClaimToThing>
+                {
+                    new ClaimToThing("query-key", "", "", 0)
+                }))
+                .Given(x => x.GivenHttpContext(context))
+                .And(x => x.GivenTheClaimParserReturns(new OkResponse<string>("value")))
+                .When(x => x.WhenIAddQueriesToTheRequest())
+                .Then(x => x.ThenTheResultIsSuccess())
+                .And(x => x.ThenTheQueryIsAdded())
+                .BDDfy();
+        }
+
+        [Fact]
+        public void should_return_error()
+        {
+            this.Given(
+               x => x.GivenAClaimToThing(new List<ClaimToThing>
+               {
+                    new ClaimToThing("", "", "", 0)
+               }))
+               .Given(x => x.GivenHttpContext(new DefaultHttpContext()))
+               .And(x => x.GivenTheClaimParserReturns(new ErrorResponse<string>(new List<Error>
+               {
+                   new AnyError()
+               })))
+               .When(x => x.WhenIAddQueriesToTheRequest())
+               .Then(x => x.ThenTheResultIsError())
+               .BDDfy();
+        }
+
+        private void ThenTheQueryIsAdded()
+        {
+            var query = _context.Request.Query.First(x => x.Key == "query-key");
+            query.Value.First().ShouldBe(_claimValue.Data);
+        }
+
+        private void GivenAClaimToThing(List<ClaimToThing> configuration)
+        {
+            _configuration = configuration;
+        }
+
+        private void GivenHttpContext(HttpContext context)
+        {
+            _context = context;
+        }
+
+        private void GivenTheClaimParserReturns(Response<string> claimValue)
+        {
+            _claimValue = claimValue;
+            _parser
+                .Setup(
+                    x =>
+                        x.GetValue(It.IsAny<IEnumerable<Claim>>(), 
+                        It.IsAny<string>(), 
+                        It.IsAny<string>(),
+                        It.IsAny<int>()))
+                .Returns(_claimValue);
+        }
+
+        private void WhenIAddQueriesToTheRequest()
+        {
+            _result = _addQueriesToRequest.SetQueriesOnContext(_configuration, _context);
+        }
+
+        private void ThenTheResultIsSuccess()
+        {
+            _result.IsError.ShouldBe(false);
+        }
+
+        private void ThenTheResultIsError()
+        {
+
+            _result.IsError.ShouldBe(true);
+        }
+
+        class AnyError : Error
+        {
+            public AnyError() 
+                : base("blahh", OcelotErrorCode.UnknownError)
+            {
+            }
+        }
+    }
+}