chore: adds unit tests for link reference inlining

Signed-off-by: Vincent Biret <[email protected]>

Author: baywet

test/Microsoft.OpenApi.Tests/Models/References/OpenApiLinkReferenceTests.SerializeCallbackReferenceAsV3JsonWorks_produceTerseOutput=False.verified.txt

@@ -0,0 +1,4 @@
+{
+  "description": "Use the id returned as the userId in `GET /users/{userId}`",
+  "$ref": "#/components/links/GetUserByUserId"
+}

test/Microsoft.OpenApi.Tests/Models/References/OpenApiLinkReferenceTests.SerializeCallbackReferenceAsV3JsonWorks_produceTerseOutput=True.verified.txt

@@ -0,0 +1 @@
+{"description":"Use the id returned as the userId in `GET /users/{userId}`","$ref":"#/components/links/GetUserByUserId"}

test/Microsoft.OpenApi.Tests/Models/References/OpenApiLinkReferenceTests.SerializeLinkReferenceAsV31JsonWorks_produceTerseOutput=False_inlineLocalReferences=False.verified.txt

@@ -0,0 +1,3 @@
+{
+  "$ref": "#/components/links/GetUserByUserId"
+}