// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
// SPDX-License-Identifier: MIT

package model

import (
	"testing"

	"github.com/pb33f/libopenapi/datamodel"
	"github.com/pb33f/libopenapi/datamodel/low"
	v2 "github.com/pb33f/libopenapi/datamodel/low/v2"
	v3 "github.com/pb33f/libopenapi/datamodel/low/v3"
	"github.com/stretchr/testify/assert"
	"go.yaml.in/yaml/v4"
)

func TestCompareDocuments_Swagger_BaseProperties_Identical(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
x-diet: tough
host: https://pb33f.io
basePath: /api
schemes:
 - http
 - https
consumes:
 - application/json
 - apple/pie
produces:
 - application/json
 - fat/belly`

	right := left

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc v2.Swagger
	var rDoc v2.Swagger
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)

	// compare.
	extChanges := CompareDocuments(&lDoc, &rDoc)
	assert.Nil(t, extChanges)
}

func TestCompareDocuments_Swagger_BaseProperties_Modified(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
x-diet: coke
host: https://pb33f.io
basePath: /api
schemes:
 - http
 - https
consumes:
 - application/json
 - apple/pie
produces:
 - application/json
 - fat/belly`

	right := `swagger: 2.0.1
x-diet: pepsi
host: https://quobix.com
basePath: /new-api
schemes:
 - ws
 - https
consumes:
 - application/json
 - apple/ice-cream
produces:
 - application/json
 - very-fat/belly`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 10, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 10)
	assert.Equal(t, 6, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_BaseProperties_Added(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
host: https://pb33f.io
basePath: /api`

	right := `swagger: 2.0
host: https://pb33f.io
basePath: /api
schemes:
  - https
consumes:
  - application/json
produces:
  - application/json`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 3, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 3)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_BaseProperties_Removed(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
host: https://pb33f.io
basePath: /api
schemes:
  - https
consumes:
  - application/json
produces:
  - application/json`

	right := `swagger: 2.0
host: https://pb33f.io
basePath: /api`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 3, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 3)
	assert.Equal(t, 3, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_Info_Modified(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
info:
 title: a doc
 contact:
   name: buckaroo
 license:
   url: https://pb33f.io`

	right := `swagger: 2.0
info:
 title: a doc that changed
 contact:
   name: chief buckaroo
 license:
   url: https://pb33f.io/license`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 3, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 3)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, 3, extChanges.InfoChanges.TotalChanges())
}

func TestCompareDocuments_Swagger_Info_Added(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0`

	right := `swagger: 2.0
info:
 title: a doc that changed
 contact:
   name: chief buckaroo
 license:
   url: https://pb33f.io/license`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, v3.InfoLabel, extChanges.Changes[0].Property)
	assert.Equal(t, PropertyAdded, extChanges.Changes[0].ChangeType)
}

func TestCompareDocuments_Swagger_Info_Removed(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0`

	right := `swagger: 2.0
info:
 title: a doc that changed
 contact:
   name: chief buckaroo
 license:
   url: https://pb33f.io/license`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(rDoc, lDoc)
	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, v3.InfoLabel, extChanges.Changes[0].Property)
	assert.Equal(t, PropertyRemoved, extChanges.Changes[0].ChangeType)
}

func TestCompareDocuments_Swagger_ExternalDocs_Modified(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
externalDocs:
 url: https://pb33f.io
 description: the ranch`

	right := `swagger: 2.0
externalDocs:
 url: https://pb33f.io/new
 description: the bunkhouse`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 2, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 2)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, 2, extChanges.ExternalDocChanges.TotalChanges())
}

func TestCompareDocuments_Swagger_ExternalDocs_Added(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0`

	right := `swagger: 2.0
externalDocs:
 url: https://pb33f.io
 description: the ranch`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, v3.ExternalDocsLabel, extChanges.Changes[0].Property)
	assert.Equal(t, PropertyAdded, extChanges.Changes[0].ChangeType)
	assert.NotNil(t, lDoc.GetExternalDocs())
}

func TestCompareDocuments_Swagger_ExternalDocs_Removed(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0`

	right := `swagger: 2.0
externalDocs:
 url: https://pb33f.io
 description: the ranch`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(rDoc, lDoc)
	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, v3.ExternalDocsLabel, extChanges.Changes[0].Property)
	assert.Equal(t, PropertyRemoved, extChanges.Changes[0].ChangeType)
}

func TestCompareDocuments_Swagger_Security_Identical(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
security:
 - nice:
   - rice
   - spice
   - fries
 - bad:
   - glad
   - sad
   - bag`

	right := `swagger: 2.0
security:
 - bad:
   - sad
   - bag
   - glad
 - nice:
   - spice
   - rice
   - fries`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Nil(t, extChanges)
}

func TestCompareDocuments_Swagger_Security_Changed(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
security:
 - nice:
   - rice
   - spice
   - fries
 - bad:
   - glad
   - sad
   - bag`

	right := `swagger: 2.0
security:
 - bad:
   - sad
   - bag
   - odd
 - nice:
   - spice
   - lego
   - fries`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 4, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 4)
	assert.Equal(t, 2, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_Components_Schemas(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
definitions:
 burgers:
   type: int
   description: num burgers
 cakes:
   type: string
   description: your favorite cake`

	right := `swagger: 2.0
definitions:
 burgers:
   type: bool
   description: allow burgers?
 cakes:
   type: int
   description: how many cakes?`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 4, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 4)
	assert.Equal(t, 2, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_Components_SecurityDefinitions_Identical(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
securityDefinitions:
 letMeIn:
   type: password
   description: a password that lets you in
 letMeOut:
   type: 2fa
   description: are you a robot?`

	right := `swagger: 2.0
securityDefinitions:
 letMeIn:
   type: password
   description: a password that lets you in
 letMeOut:
   type: 2fa
   description: are you a robot?`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Nil(t, extChanges)
}

func TestCompareDocuments_Swagger_Components_SecurityDefinitions_Changed(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
securityDefinitions:
 letMeIn:
   type: password
   description: a password that lets you in`

	right := `swagger: 2.0
securityDefinitions:
 letMeIn:
   type: secret
   description: what is a secret?
 letMeOut:
   type: 2fa
   description: are you a robot?`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 2, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 2)
	assert.Equal(t, 1, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_Components_Parameters_Identical(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
parameters:
 letMeIn:
   name: letsGo
   type: int
   description: lets go my friends.
 letMeOut:
   name: whyNow
   type: string
   description: why?`

	right := `swagger: 2.0
parameters:
 letMeIn:
   name: letsGo
   type: int
   description: lets go my friends.
 letMeOut:
   name: whyNow
   type: string
   description: why?`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Nil(t, extChanges)
}

func TestCompareDocuments_Swagger_Components_Parameters_Changed(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
parameters:
 letMeIn:
   name: letsGo
   type: int
   description: lets go my friends. now.
`

	right := `swagger: 2.0
parameters:
 letMeIn:
   name: letsGoNow
   type: string
   description: lets go my friends.
 letMeOut:
   name: whyNowPlease
   type: int
   description: why should we do it?`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_Components_Responses_Identical(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
responses:
 tacos:
   description: who wants a taco?
   schema:
     type: int
 pizza:
   description: who wants a pizza?
   schema:
     type: string`

	right := `swagger: 2.0
responses:
 tacos:
   description: who wants a taco?
   schema:
     type: int
 pizza:
   description: who wants a pizza?
   schema:
     type: string`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Nil(t, extChanges)
}

func TestCompareDocuments_Swagger_Components_Responses_Modified(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
responses:
 tacos:
   description: who wants a taco?
   schema:
     type: int
 pizza:
   description: who wants a pizza?
   schema:
     type: string`

	right := `swagger: 2.0
responses:
 tacos:
   description: I want a taco
   schema:
     type: bool`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 1, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_Components_Paths_Identical(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
paths:
 /nice/rice:
   get:
     description: nice rice?
 /lovely/horse:
   post:
     description: what a lovely horse.`

	right := `swagger: 2.0
paths:
 /lovely/horse:
   post:
     description: what a lovely horse.
 /nice/rice:
   get:
     description: nice rice?`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Nil(t, extChanges)
}

func TestCompareDocuments_Swagger_Components_Paths_Modified(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
paths:
 /nice/rice:
   get:
     description: nice rice?
 /lovely/horse:
   post:
     description: what a lovely horse.`

	right := `swagger: 2.0
paths:
 /lovely/horse:
   put:
     description: what a lovely horse.
 /nice/rice:
   get:
     description: nice rice, but changed`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 3, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 3)
	assert.Equal(t, 1, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_Components_Paths_Modified_AgainForFun(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
paths:
 /nice/rice:
   get:
     description: nice rice?
 /lovely/horse:
   post:
     description: what a lovely horse.`

	right := `swagger: 2.0
paths:
 /lovely/horse:
   put:
     description: what a lovely horse, and shoes.
 /nice/rice:
   post:
     description: nice rice, but changed`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 4, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 4)
	assert.Equal(t, 2, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_Swagger_Components_Tags_Identical(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
tags:
 - name: a tag
   description: a nice tag
 - name: another tag
   description: this is another tag?`

	right := `swagger: 2.0
tags:
 - name: another tag
   description: this is another tag?
 - name: a tag
   description: a nice tag
 `

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Nil(t, extChanges)
}

func TestCompareDocuments_Swagger_Components_Tags_Modified(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `swagger: 2.0
tags:
 - name: a tag
   description: a nice tag
 - name: another tag
   description: this is another tag?`

	right := `swagger: 2.0
tags:
 - name: another tag
   externalDocs:
     url: https://pb33f.io
   description: this is another tag, that changed
 - name: a tag
   description: a nice tag, modified
 `

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v2.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v2.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 3, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 3)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_OpenAPI_BaseProperties_Identical(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1
x-diet: tough
jsonSchemaDialect: https://pb33f.io/schema`

	right := left

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(&lDoc, &rDoc)
	assert.Nil(t, extChanges)
	assert.NotNil(t, lDoc.GetExternalDocs())
	assert.Nil(t, lDoc.FindSecurityRequirement("chewy")) // because why not.
}

func TestCompareDocuments_OpenAPI_BaseProperties_Modified(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1
x-diet: tough
jsonSchemaDialect: https://pb33f.io/schema`

	right := `openapi: 3.1.0
x-diet: fat
jsonSchemaDialect: https://pb33f.io/schema/changed`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)

	assert.Equal(t, 3, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 3)
	assert.Equal(t, 2, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_OpenAPI_AddComponents(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1`

	right := `openapi: 3.1
components:
  schemas:
    thing:
      type: int`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)

	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, PropertyAdded, extChanges.Changes[0].ChangeType)
}

func TestCompareDocuments_OpenAPI_Removed(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1`

	right := `openapi: 3.1
components:
  schemas:
    thing:
      type: int`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(rDoc, lDoc)

	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 1, extChanges.TotalBreakingChanges())
	assert.Equal(t, PropertyRemoved, extChanges.Changes[0].ChangeType)
}

func TestCompareDocuments_OpenAPI_ModifyPaths(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1
paths:
  /brown/cow:
    get:
      description: brown cow
  /brown/hen:
    get:
      description: brown hen`

	right := `openapi: 3.1
paths:
  /brown/cow:
    get:
      description: brown cow modified
  /brown/hen:
    get:
      description: brown hen modified`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)

	assert.Equal(t, 2, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 2)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_OpenAPI_Identical_Security(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1
security:
  - cakes:
    - chocolate
    - vanilla
  - shoes:
    - white
    - black`

	right := `openapi: 3.1
security:
  - shoes:
    - black
    - white
  - cakes:
    - vanilla
    - chocolate `

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Nil(t, extChanges)
}

func TestCompareDocuments_OpenAPI_ModifyComponents(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1
components:
  schemas:
    athing:
      description: a schema
    nothing:
      description: nothing`

	right := `openapi: 3.1
components:
  schemas:
    athing:
      description: a schema that changed
    nothing:
      description: nothing with an update`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)

	assert.Equal(t, 2, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 2)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_OpenAPI_ModifyServers(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1
servers:
  - url: https://pb33f.io
  - url: https://quobix.com`

	right := `openapi: 3.1
servers:
  - url: https://pb33f.io
    description: hello!
  - url: https://api.pb33f.io`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)

	assert.Equal(t, 3, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 3)
	assert.Equal(t, 1, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_OpenAPI_ModifyExamples(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1
components:
  examples:
    fresh:
      value: something`

	right := `openapi: 3.1
components:
  examples:
    fresh:
      value: something
    cakes:
      value: something`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)

	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_OpenAPI_SelfField(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()

	// Test adding $self field
	left := `openapi: 3.2.0
info:
  title: Test API
  version: 1.0.0`

	right := `openapi: 3.2.0
$self: https://api.example.com/v1/openapi.yaml
info:
  title: Test API
  version: 1.0.0`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	changes := CompareDocuments(lDoc, rDoc)
	assert.NotNil(t, changes)
	assert.Equal(t, 1, changes.TotalChanges())
	assert.Equal(t, 1, changes.TotalBreakingChanges()) // adding $self is breaking (changes document location)

	allChanges := changes.GetAllChanges()
	assert.Len(t, allChanges, 1)
	assert.Equal(t, PropertyAdded, allChanges[0].ChangeType)
	assert.Equal(t, v3.SelfLabel, allChanges[0].Property)

	// Test removing $self field
	changes = CompareDocuments(rDoc, lDoc)
	assert.NotNil(t, changes)
	assert.Equal(t, 1, changes.TotalChanges())
	assert.Equal(t, 1, changes.TotalBreakingChanges()) // removing $self is breaking (loses document location)

	allChanges = changes.GetAllChanges()
	assert.Len(t, allChanges, 1)
	assert.Equal(t, PropertyRemoved, allChanges[0].ChangeType)
	assert.Equal(t, v3.SelfLabel, allChanges[0].Property)

	// Test modifying $self field
	left = `openapi: 3.2.0
$self: https://api.example.com/v1/openapi.yaml
info:
  title: Test API
  version: 1.0.0`

	right = `openapi: 3.2.0
$self: https://api.example.com/v2/openapi.yaml
info:
  title: Test API
  version: 1.0.0`

	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	siLeft, _ = datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ = datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ = v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ = v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	changes = CompareDocuments(lDoc, rDoc)
	assert.NotNil(t, changes)
	assert.Equal(t, 1, changes.TotalChanges())
	assert.Equal(t, 1, changes.TotalBreakingChanges()) // modifying $self is breaking (changes document location)

	allChanges = changes.GetAllChanges()
	assert.Len(t, allChanges, 1)
	assert.Equal(t, Modified, allChanges[0].ChangeType)
	assert.Equal(t, v3.SelfLabel, allChanges[0].Property)
}

func TestCompareDocuments_OpenAPI_ModifyWebhooks(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.1
webhooks:
  bHook:
    get:
      description: coffee
  aHook:
    get:
      description: jazz`

	right := `openapi: 3.1
webhooks:
  bHook:
    get:
      description: coffee in the morning
  aHook:
    get:
      description: jazz in the evening`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)

	assert.Equal(t, 2, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 2)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_OpenAPIExampleMapChanges(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.0.0
paths:
  /:
    post:
      requestBody:
        content:
          application/json:
            examples:
              test:
                value:
                  map:
                    deep:
                      date: 2020-01-01`

	right := `openapi: 3.0.0
paths:
  /:
    post:
      requestBody:
        content:
          application/json:
            examples:
              test:
                value:
                  map:
                    deep:
                      date: "2020-01-04"`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
}

func TestCompareDocuments_OpenAPIExampleNoExampleMapChanges(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `openapi: 3.0.0
paths:
  /:
    post:
      requestBody:
        content:
          application/json:
            examples:
              test:
                value:
                  map:
                    deep:
                      date: 2020-01-01`

	right := `openapi: 3.0.0
paths:
  /:
    post:
      requestBody:
        content:
          application/json:
            examples:
              test:
                value:
                  map:
                    deep:
                      date: 2020-01-01`

	// have to build docs fully to get access to objects
	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))

	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// compare.
	extChanges := CompareDocuments(lDoc, rDoc)
	assert.Nil(t, extChanges)
}

func TestDocumentChanges_Nil(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	var dc *DocumentChanges
	assert.Equal(t, 0, dc.TotalChanges())
	assert.Equal(t, 0, dc.TotalBreakingChanges())
	assert.Nil(t, dc.GetAllChanges())
}

// TestCompareDocuments_OpenAPI_ServersConfigurable tests that root-level servers
// use CompServers for breaking rule lookup and can be configured independently.
func TestCompareDocuments_OpenAPI_ServersConfigurable(t *testing.T) {
	ResetDefaultBreakingRules()
	ResetActiveBreakingRulesConfig()
	low.ClearHashCache()
	defer func() {
		ResetActiveBreakingRulesConfig()
		ResetDefaultBreakingRules()
	}()

	// Document with server that will be removed
	left := `openapi: 3.1
servers:
  - url: https://api.example.com
  - url: https://api2.example.com`

	right := `openapi: 3.1
servers:
  - url: https://api.example.com`

	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))
	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// Test 1: Default config - removing server should be breaking
	changes := CompareDocuments(lDoc, rDoc)
	assert.NotNil(t, changes)
	assert.Equal(t, 1, changes.TotalChanges())
	assert.Equal(t, 1, changes.TotalBreakingChanges(), "By default, removing root server should be breaking")

	// Test 2: Custom config - make root server removal non-breaking
	ResetDefaultBreakingRules()
	low.ClearHashCache()

	customConfig := &BreakingRulesConfig{
		Servers: &BreakingChangeRule{
			Added:    boolPtr(false),
			Modified: boolPtr(false),
			Removed:  boolPtr(false), // Make removal non-breaking
		},
	}
	defaults := GenerateDefaultBreakingRules()
	defaults.Merge(customConfig)
	SetActiveBreakingRulesConfig(defaults)

	// Rebuild docs to ensure clean state
	lDoc2, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc2, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	changes2 := CompareDocuments(lDoc2, rDoc2)
	assert.NotNil(t, changes2)
	assert.Equal(t, 1, changes2.TotalChanges())
	assert.Equal(t, 0, changes2.TotalBreakingChanges(), "With custom config, removing root server should NOT be breaking")
}

// TestCompareDocuments_OpenAPI_ServersAddedConfigurable tests adding root-level servers.
func TestCompareDocuments_OpenAPI_ServersAddedConfigurable(t *testing.T) {
	ResetDefaultBreakingRules()
	ResetActiveBreakingRulesConfig()
	low.ClearHashCache()
	defer func() {
		ResetActiveBreakingRulesConfig()
		ResetDefaultBreakingRules()
	}()

	// Document where server is added
	left := `openapi: 3.1
servers:
  - url: https://api.example.com`

	right := `openapi: 3.1
servers:
  - url: https://api.example.com
  - url: https://api2.example.com`

	siLeft, _ := datamodel.ExtractSpecInfo([]byte(left))
	siRight, _ := datamodel.ExtractSpecInfo([]byte(right))
	lDoc, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	// Test 1: Default config - adding server should NOT be breaking
	changes := CompareDocuments(lDoc, rDoc)
	assert.NotNil(t, changes)
	assert.Equal(t, 1, changes.TotalChanges())
	assert.Equal(t, 0, changes.TotalBreakingChanges(), "By default, adding root server should NOT be breaking")

	// Test 2: Custom config - make adding servers breaking
	ResetDefaultBreakingRules()
	low.ClearHashCache()

	customConfig := &BreakingRulesConfig{
		Servers: &BreakingChangeRule{
			Added:    boolPtr(true), // Make adding breaking
			Modified: boolPtr(false),
			Removed:  boolPtr(false),
		},
	}
	defaults := GenerateDefaultBreakingRules()
	defaults.Merge(customConfig)
	SetActiveBreakingRulesConfig(defaults)

	// Rebuild docs
	lDoc2, _ := v3.CreateDocumentFromConfig(siLeft, datamodel.NewDocumentConfiguration())
	rDoc2, _ := v3.CreateDocumentFromConfig(siRight, datamodel.NewDocumentConfiguration())

	changes2 := CompareDocuments(lDoc2, rDoc2)
	assert.NotNil(t, changes2)
	assert.Equal(t, 1, changes2.TotalChanges())
	assert.Equal(t, 1, changes2.TotalBreakingChanges(), "With custom config, adding root server should be breaking")
}