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Feature/transform headers (#204)
* New feature that lets a user do find and replace on an upstream header * can transform downstream and upstream headers, not sure if interface is good * can replace location header with placeholder * added some syntax
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using Xunit;
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using Shouldly;
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using TestStack.BDDfy;
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using System.Net.Http;
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using Ocelot.Headers;
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using Ocelot.Configuration;
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using System.Collections.Generic;
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using Ocelot.Responses;
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using System.Linq;
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namespace Ocelot.UnitTests.Headers
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{
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public class HttpResponseHeaderReplacerTests
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{
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private HttpResponseMessage _response;
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private HttpResponseHeaderReplacer _replacer;
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private List<HeaderFindAndReplace> _headerFindAndReplaces;
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private Response _result;
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public HttpResponseHeaderReplacerTests()
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{
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_replacer = new HttpResponseHeaderReplacer();
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}
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[Fact]
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public void should_replace_headers()
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{
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var response = new HttpResponseMessage();
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response.Headers.Add("test", "test");
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var fAndRs = new List<HeaderFindAndReplace>();
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fAndRs.Add(new HeaderFindAndReplace("test", "test", "chiken", 0));
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this.Given(x => GivenTheHttpResponse(response))
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.And(x => GivenTheFollowingHeaderReplacements(fAndRs))
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.When(x => WhenICallTheReplacer())
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.Then(x => ThenTheHeadersAreReplaced())
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.BDDfy();
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}
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[Fact]
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public void should_not_replace_headers()
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{
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var response = new HttpResponseMessage();
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response.Headers.Add("test", "test");
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var fAndRs = new List<HeaderFindAndReplace>();
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this.Given(x => GivenTheHttpResponse(response))
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.And(x => GivenTheFollowingHeaderReplacements(fAndRs))
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.When(x => WhenICallTheReplacer())
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.Then(x => ThenTheHeadersAreNotReplaced())
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.BDDfy();
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}
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private void ThenTheHeadersAreNotReplaced()
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{
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_result.ShouldBeOfType<OkResponse>();
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foreach (var f in _headerFindAndReplaces)
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{
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_response.Headers.TryGetValues(f.Key, out var values);
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values.ToList()[f.Index].ShouldBe("test");
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}
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}
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private void GivenTheFollowingHeaderReplacements(List<HeaderFindAndReplace> fAndRs)
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{
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_headerFindAndReplaces = fAndRs;
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}
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private void GivenTheHttpResponse(HttpResponseMessage response)
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{
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_response = response;
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}
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private void WhenICallTheReplacer()
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{
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_result = _replacer.Replace(_response, _headerFindAndReplaces);
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}
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private void ThenTheHeadersAreReplaced()
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{
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_result.ShouldBeOfType<OkResponse>();
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foreach (var f in _headerFindAndReplaces)
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{
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_response.Headers.TryGetValues(f.Key, out var values);
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values.ToList()[f.Index].ShouldBe(f.Replace);
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}
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}
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}
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}
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