tests: add failing test case for recursive callback reference

document_test.go

@@ -3,6 +3,7 @@
 package libopenapi
 
 import (
+	"bytes"
 	"fmt"
 	"log/slog"
 	"os"
@@ -1170,3 +1171,23 @@ func TestDocument_Render_PreserveOrder(t *testing.T) {
 		})
 	})
 }
+
+func TestDocument_AdvanceCallbackReferences(t *testing.T) {
+	bs, _ := os.ReadFile("test_specs/advancecallbackreferences/min-openapi.yaml")
+
+	buf := bytes.NewBuffer([]byte{})
+
+	config := datamodel.NewDocumentConfiguration()
+	config.AllowRemoteReferences = true
+	config.AllowFileReferences = true
+	config.BasePath = "test_specs/advancecallbackreferences"
+	config.Logger = slog.New(slog.NewJSONHandler(buf, &slog.HandlerOptions{Level: slog.LevelError}))
+
+	doc, err := NewDocumentWithConfiguration(bs, config)
+	require.NoError(t, err)
+
+	_, errs := doc.BuildV3Model()
+	require.Empty(t, errs)
+
+	assert.Empty(t, buf.String())
+}

test_specs/advancecallbackreferences/min-callbacks.yaml

@@ -0,0 +1,3 @@
+test-callback:
+  "/test-callback":
+    $ref: "./min-components.yaml#/components/pathItems/test-callback"

test_specs/advancecallbackreferences/min-components.yaml

@@ -0,0 +1,9 @@
+components:
+  pathItems:
+    test-callback:
+      $ref: "#/components/pathItems/test-callback-2"
+    test-callback-2:
+      get:
+        responses:
+          "200":
+            description: OK

test_specs/advancecallbackreferences/min-openapi.yaml

@@ -0,0 +1,16 @@
+openapi: 3.1.0
+info:
+  title: Test
+  version: 0.0.1
+servers:
+  - url: https://test.com
+paths:
+  /test:
+    get:
+      operationId: test
+      responses:
+        "200":
+          description: OK
+      callbacks:
+        test:
+          $ref: "./min-callbacks.yaml#/test-callback"