Updated diagram test to cover more scenarios

Author: darrelmiller

test/Microsoft.OpenApi.Tests/Services/OpenApiUrlTreeNodeTests.VerifyDiagramFromSampleOpenAPI.verified.txt

@@ -8,8 +8,8 @@ classDef DELETE_GET_PUT fill:olive,stroke:#333,stroke-width:2px
 classDef DELETE_GET fill:DarkSeaGreen,stroke:#333,stroke-width:2px
 classDef DELETE fill:Tomato,stroke:#333,stroke-width:2px
 classDef OTHER fill:White,stroke:#333,stroke-width:2px
-/["/"] --> /houses["houses"]
-class /houses OTHER
-/["/"] --> /cars["cars"]
-class /cars OTHER
-class / OTHER
+/["/"] --> /houses("houses")
+class /houses GET_POST
+/["/"] --> /cars>"cars"]
+class /cars POST
+class / GET

test/Microsoft.OpenApi.Tests/Services/OpenApiUrlTreeNodeTests.cs

@@ -19,9 +19,27 @@ public class OpenApiUrlTreeNodeTests
         {
             Paths = new OpenApiPaths()
             {
-                ["/"] = new OpenApiPathItem(),
-                ["/houses"] = new OpenApiPathItem(),
+                ["/"] = new OpenApiPathItem() {
+                    Operations = new Dictionary<OperationType, OpenApiOperation>()
+                    {
+                        [OperationType.Get] = new OpenApiOperation(),
+                    }
+                },
+                ["/houses"] = new OpenApiPathItem()
+                {
+                    Operations = new Dictionary<OperationType, OpenApiOperation>()
+                    {
+                        [OperationType.Get] = new OpenApiOperation(),
+                        [OperationType.Post] = new OpenApiOperation()
+                    }
+                },
                 ["/cars"] = new OpenApiPathItem()
+                {
+                    Operations = new Dictionary<OperationType, OpenApiOperation>()
+                    {
+                        [OperationType.Post] = new OpenApiOperation()
+                    }
+                }
             }
         };