Added a test for referencing security schemes

Author: darrelmiller

test/Microsoft.OpenApi.Readers.Tests/Microsoft.OpenApi.Readers.Tests.csproj

@@ -12,6 +12,9 @@
         <SignAssembly>true</SignAssembly>
         <AssemblyOriginatorKeyFile>..\..\src\Microsoft.OpenApi.snk</AssemblyOriginatorKeyFile>
     </PropertyGroup>
+    <ItemGroup>
+      <None Remove="V3Tests\Samples\OpenApiOperation\securedOperation.yaml" />
+    </ItemGroup>
     <ItemGroup>
       <EmbeddedResource Include="OpenApiReaderTests\Samples\unsupported.v1.yaml">
         <CopyToOutputDirectory>Never</CopyToOutputDirectory>
@@ -109,6 +112,7 @@
       <EmbeddedResource Include="V3Tests\Samples\OpenApiInfo\minimalInfo.yaml">
         <CopyToOutputDirectory>Never</CopyToOutputDirectory>
       </EmbeddedResource>
+      <EmbeddedResource Include="V3Tests\Samples\OpenApiOperation\securedOperation.yaml" />
       <EmbeddedResource Include="V3Tests\Samples\OpenApiSchema\advancedSchemaWithReference.yaml">
         <CopyToOutputDirectory>Never</CopyToOutputDirectory>
       </EmbeddedResource>

test/Microsoft.OpenApi.Readers.Tests/V3Tests/OpenApiOperationTests.cs

@@ -0,0 +1,27 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license. 
+
+using System.IO;
+using System.Linq;
+using Xunit;
+
+namespace Microsoft.OpenApi.Readers.Tests.V3Tests
+{
+    public class OpenApiOperationTests
+    {
+        private const string SampleFolderPath = "V3Tests/Samples/OpenApiOperation/";
+
+        [Fact]
+        public void OperationWithSecurityRequirementShouldReferenceSecurityScheme()
+        {
+            using (var stream = Resources.GetStream(Path.Combine(SampleFolderPath, "securedOperation.yaml")))
+            {
+                var openApiDoc = new OpenApiStreamReader().Read(stream, out var diagnostic);
+
+                var securityRequirement = openApiDoc.Paths["/"].Operations[Models.OperationType.Get].Security.First();
+
+                Assert.Same(securityRequirement.Keys.First(), openApiDoc.Components.SecuritySchemes.First().Value);
+            }
+        }
+    }
+}

test/Microsoft.OpenApi.Readers.Tests/V3Tests/Samples/OpenApiOperation/securedOperation.yaml

@@ -0,0 +1,17 @@
+openapi: 3.0.0
+info:
+  title: Example of Security Requirement referencing a security scheme
+  version: 1.0.0
+paths:
+  '/':
+    get:
+      security:
+      - basicAuth: []
+      responses:
+        '200':
+          description: OK
+components:
+  securitySchemes:
+    basicAuth:
+      type: http
+      scheme: basic