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validator_test.go
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validator_test.go
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// Copyright 2023 Princess B33f Heavy Industries / Dave Shanley
// SPDX-License-Identifier: MIT
package validator
import (
"bytes"
"encoding/json"
"net/http"
"net/http/httptest"
"os"
"testing"
"github.com/pb33f/libopenapi"
"github.com/pb33f/libopenapi-validator/helpers"
v3 "github.com/pb33f/libopenapi/datamodel/high/v3"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestNewValidator(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
assert.NotNil(t, v.GetParameterValidator())
assert.NotNil(t, v.GetResponseBodyValidator())
assert.NotNil(t, v.GetRequestBodyValidator())
}
func TestNewValidator_ValidateDocument(t *testing.T) {
doc, _ := libopenapi.NewDocument(petstoreBytes)
v, _ := NewValidator(doc)
valid, errs := v.ValidateDocument()
assert.True(t, valid)
assert.Len(t, errs, 0)
}
func TestNewValidator_BadDoc(t *testing.T) {
spec := `swagger: 2.0`
doc, _ := libopenapi.NewDocument([]byte(spec))
_, errs := NewValidator(doc)
assert.Len(t, errs, 1)
}
func TestNewValidator_ValidateHttpRequest_BadPath(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
body := map[string]interface{}{
"name": "Big Mac",
"patties": 2,
"vegetarian": true,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/I am a potato man",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequest(request)
assert.False(t, valid)
assert.Len(t, errors, 1)
assert.Equal(t, "POST Path '/I am a potato man' not found", errors[0].Message)
}
func TestNewValidator_ValidateHttpRequestSync_BadPath(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
body := map[string]interface{}{
"name": "Big Mac",
"patties": 2,
"vegetarian": true,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/I am a potato man",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequestSync(request)
assert.False(t, valid)
assert.Len(t, errors, 1)
assert.Equal(t, "POST Path '/I am a potato man' not found", errors[0].Message)
}
func TestNewValidator_ValidateHttpRequest_ValidPostSimpleSchema(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
body := map[string]interface{}{
"name": "Big Mac",
"patties": 2,
"vegetarian": true,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/burgers/createBurger",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequest(request)
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_ValidateHttpRequestSync_ValidPostSimpleSchema(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
body := map[string]interface{}{
"name": "Big Mac",
"patties": 2,
"vegetarian": true,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/burgers/createBurger",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequestSync(request)
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_ValidateHttpRequestSync_ValidPostSimpleSchema_FoundPath(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
v.(*validator).foundPath = &v3.PathItem{
Post: &v3.Operation{},
}
v.(*validator).foundPathValue = "/burgers/createBurger"
body := map[string]interface{}{
"name": "Big Mac",
"patties": 2,
"vegetarian": true,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/burgers/createBurger",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequestSync(request)
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_slash_server_url(t *testing.T) {
spec := `openapi: 3.1.0
servers:
- url: /
paths:
/burgers/{burgerId}/locate:
patch:
operationId: locateBurger
parameters:
- name: burgerId
in: path
required: true
schema:
type: string
format: uuid
`
doc, err := libopenapi.NewDocument([]byte(spec))
require.NoError(t, err)
request, _ := http.NewRequest(http.MethodPatch, "https://things.com/burgers/edd0189c-420b-489c-98f2-0facc5a26f3a/locate", nil)
v, _ := NewValidator(doc)
valid, errors := v.ValidateHttpRequest(request)
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_ValidateHttpRequest_SetPath_ValidPostSimpleSchema(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
body := map[string]interface{}{
"name": "Big Mac",
"patties": 2,
"vegetarian": true,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/burgers/createBurger",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequest(request)
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_ValidateHttpRequestSync_SetPath_ValidPostSimpleSchema(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
body := map[string]interface{}{
"name": "Big Mac",
"patties": 2,
"vegetarian": true,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/burgers/createBurger",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequestSync(request)
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_ValidateHttpRequest_InvalidPostSchema(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
// mix up the primitives to fire two schema violations.
body := map[string]interface{}{
"name": "Big Mac",
"patties": false, // wrong.
"vegetarian": false,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/burgers/createBurger",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequest(request)
assert.False(t, valid)
assert.Len(t, errors, 1)
assert.Equal(t, "expected integer, but got boolean", errors[0].SchemaValidationErrors[0].Reason)
}
func TestNewValidator_ValidateHttpRequestSync_InvalidPostSchema(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
// mix up the primitives to fire two schema violations.
body := map[string]interface{}{
"name": "Big Mac",
"patties": false, // wrong.
"vegetarian": false,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/burgers/createBurger",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequestSync(request)
assert.False(t, valid)
assert.Len(t, errors, 1)
assert.Equal(t, "expected integer, but got boolean", errors[0].SchemaValidationErrors[0].Reason)
}
func TestNewValidator_ValidateHttpRequest_InvalidQuery(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
parameters:
- in: query
name: cheese
required: true
schema:
type: string
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
body := map[string]interface{}{
"name": "Big Mac",
"patties": 2, // wrong.
"vegetarian": false,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/burgers/createBurger",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequest(request)
assert.False(t, valid)
assert.Len(t, errors, 1)
assert.Equal(t, "Query parameter 'cheese' is missing", errors[0].Message)
}
func TestNewValidator_ValidateHttpRequestSync_InvalidQuery(t *testing.T) {
spec := `openapi: 3.1.0
paths:
/burgers/createBurger:
parameters:
- in: query
name: cheese
required: true
schema:
type: string
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
name:
type: string
patties:
type: integer
vegetarian:
type: boolean`
doc, _ := libopenapi.NewDocument([]byte(spec))
v, _ := NewValidator(doc)
body := map[string]interface{}{
"name": "Big Mac",
"patties": 2, // wrong.
"vegetarian": false,
}
bodyBytes, _ := json.Marshal(body)
request, _ := http.NewRequest(http.MethodPost, "https://things.com/burgers/createBurger",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
valid, errors := v.ValidateHttpRequestSync(request)
assert.False(t, valid)
assert.Len(t, errors, 1)
assert.Equal(t, "Query parameter 'cheese' is missing", errors[0].Message)
}
var petstoreBytes []byte
func init() {
petstoreBytes, _ = os.ReadFile("test_specs/petstorev3.json")
}
func TestNewValidator_PetStore_MissingContentType(t *testing.T) {
// create a new document from the petstore spec
doc, _ := libopenapi.NewDocument(petstoreBytes)
// create a doc
v, _ := NewValidator(doc)
// create a pet
body := map[string]interface{}{
"id": 123,
"name": "cotton",
"category": map[string]interface{}{
"id": 123,
"name": "dogs",
},
"photoUrls": []string{"https://example.com"},
}
// marshal the body into bytes.
bodyBytes, _ := json.Marshal(body)
// create a new put request
request, _ := http.NewRequest(http.MethodPut, "https://hyperspace-superherbs.com/pet",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
// simulate a request/response, in this case the contract returns a 200 with the pet we just created.
res := httptest.NewRecorder()
handler := func(w http.ResponseWriter, r *http.Request) {
w.Header().Set(helpers.ContentTypeHeader, "application/not-json")
w.WriteHeader(http.StatusOK)
_, _ = w.Write(bodyBytes)
}
// fire the request
handler(res, request)
// validate the response (should be clean)
valid, errors := v.ValidateHttpRequestResponse(request, res.Result())
// should all be perfectly valid.
assert.False(t, valid)
assert.Len(t, errors, 1)
assert.Equal(t, "PUT / 200 operation response content type 'application/not-json' does not exist",
errors[0].Message)
assert.Equal(t, "The content type 'application/not-json' of the PUT response received "+
"has not been defined, it's an unknown type",
errors[0].Reason)
}
func TestNewValidator_PetStore_PetPost200_Valid_PathPreset(t *testing.T) {
// create a new document from the petstore spec
doc, _ := libopenapi.NewDocument(petstoreBytes)
// create a doc
v, _ := NewValidator(doc)
// create a pet
body := map[string]interface{}{
"id": 123,
"name": "cotton",
"category": map[string]interface{}{
"id": 123,
"name": "dogs",
},
"photoUrls": []string{"https://example.com"},
}
// marshal the body into bytes.
bodyBytes, _ := json.Marshal(body)
// create a new put request
request, _ := http.NewRequest(http.MethodPut, "https://hyperspace-superherbs.com/pet",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
// simulate a request/response, in this case the contract returns a 200 with the pet we just created.
res := httptest.NewRecorder()
handler := func(w http.ResponseWriter, r *http.Request) {
w.Header().Set(helpers.ContentTypeHeader, helpers.JSONContentType)
w.WriteHeader(http.StatusOK)
_, _ = w.Write(bodyBytes)
}
// fire the request
handler(res, request)
// validate the response (should be clean)
valid, errors := v.ValidateHttpRequestResponse(request, res.Result())
// should all be perfectly valid.
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_PetStore_PetPost200_Valid(t *testing.T) {
// create a new document from the petstore spec
doc, _ := libopenapi.NewDocument(petstoreBytes)
// create a doc
v, _ := NewValidator(doc)
// create a pet
body := map[string]interface{}{
"id": 123,
"name": "cotton",
"category": map[string]interface{}{
"id": 123,
"name": "dogs",
},
"photoUrls": []string{"https://example.com"},
}
// marshal the body into bytes.
bodyBytes, _ := json.Marshal(body)
// create a new put request
request, _ := http.NewRequest(http.MethodPut, "https://hyperspace-superherbs.com/pet",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
// simulate a request/response, in this case the contract returns a 200 with the pet we just created.
res := httptest.NewRecorder()
handler := func(w http.ResponseWriter, r *http.Request) {
w.Header().Set(helpers.ContentTypeHeader, helpers.JSONContentType)
w.WriteHeader(http.StatusOK)
_, _ = w.Write(bodyBytes)
}
// fire the request
handler(res, request)
// validate the response (should be clean)
valid, errors := v.ValidateHttpRequestResponse(request, res.Result())
// should all be perfectly valid.
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_PetStore_PetPost200_Invalid(t *testing.T) {
// create a new document from the petstore spec
doc, _ := libopenapi.NewDocument(petstoreBytes)
// create a doc
v, _ := NewValidator(doc)
// create a pet, but is missing the photoUrls field
body := map[string]interface{}{
"id": 123,
"name": "cotton",
"category": map[string]interface{}{
"id": 123,
"name": "dogs",
},
}
// marshal the body into bytes.
bodyBytes, _ := json.Marshal(body)
// create a new put request
request, _ := http.NewRequest(http.MethodPost, "https://hyperspace-superherbs.com/pet",
bytes.NewBuffer(bodyBytes))
request.Header.Set("Content-Type", "application/json")
// simulate a request/response, in this case the contract returns a 200 with the pet we just created.
res := httptest.NewRecorder()
handler := func(w http.ResponseWriter, r *http.Request) {
w.Header().Set(helpers.ContentTypeHeader, helpers.JSONContentType)
w.WriteHeader(http.StatusProxyAuthRequired) // this is not defined by the contract, so it should fail.
_, _ = w.Write(bodyBytes)
}
// fire the request
handler(res, request)
valid, errors := v.ValidateHttpRequestResponse(request, res.Result())
// we have a schema violation, and a response code violation, our validator should have picked them
// both up.
assert.False(t, valid)
assert.Len(t, errors, 2)
// check errors
for i := range errors {
if errors[i].SchemaValidationErrors != nil {
assert.Equal(t, "missing properties: 'photoUrls'", errors[i].SchemaValidationErrors[0].Reason)
} else {
assert.Equal(t, "POST operation request response code '407' does not exist", errors[i].Message)
}
}
}
func TestNewValidator_PetStore_PetFindByStatusGet200_Valid(t *testing.T) {
// create a new document from the petstore spec
doc, _ := libopenapi.NewDocument(petstoreBytes)
// create a doc
v, _ := NewValidator(doc)
// create a pet
body := map[string]interface{}{
"id": 123,
"name": "cotton",
"category": map[string]interface{}{
"id": 123,
"name": "dogs",
},
"photoUrls": []string{"https://example.com"},
}
// marshal the body into bytes.
bodyBytes, _ := json.Marshal([]interface{}{body}) // operation returns an array of pets
// create a new put request
request, _ := http.NewRequest(http.MethodGet,
"https://hyperspace-superherbs.com/pet/findByStatus?status=sold", nil)
request.Header.Set("Content-Type", "application/json")
// simulate a request/response, in this case the contract returns a 200 with the pet we just created.
res := httptest.NewRecorder()
handler := func(w http.ResponseWriter, r *http.Request) {
w.Header().Set(helpers.ContentTypeHeader, helpers.JSONContentType)
w.WriteHeader(http.StatusOK)
_, _ = w.Write(bodyBytes)
}
// fire the request
handler(res, request)
// validate the response (should be clean)
valid, errors := v.ValidateHttpRequestResponse(request, res.Result())
// should all be perfectly valid.
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_PetStore_PetFindByStatusGet200_BadEnum(t *testing.T) {
// create a new document from the petstore spec
doc, _ := libopenapi.NewDocument(petstoreBytes)
// create a doc
v, _ := NewValidator(doc)
// create a pet
body := map[string]interface{}{
"id": 123,
"name": "cotton",
"category": map[string]interface{}{
"id": 123,
"name": "dogs",
},
"photoUrls": []string{"https://example.com"},
}
// marshal the body into bytes.
bodyBytes, _ := json.Marshal([]interface{}{body}) // operation returns an array of pets
// create a new put request
request, _ := http.NewRequest(http.MethodGet,
"https://hyperspace-superherbs.com/pet/findByStatus?status=invalidEnum", nil) // enum is invalid
request.Header.Set("Content-Type", "application/json")
// simulate a request/response, in this case the contract returns a 200 with a pet
res := httptest.NewRecorder()
handler := func(w http.ResponseWriter, r *http.Request) {
w.Header().Set(helpers.ContentTypeHeader, helpers.JSONContentType)
w.Header().Set("Herbs-And-Spice", helpers.JSONContentType)
w.WriteHeader(http.StatusOK)
_, _ = w.Write(bodyBytes)
}
// fire the request
handler(res, request)
// validate the response (should be clean)
valid, errors := v.ValidateHttpRequestResponse(request, res.Result())
// should all be perfectly valid.
assert.False(t, valid)
assert.Len(t, errors, 1)
assert.Equal(t, "Query parameter 'status' does not match allowed values", errors[0].Message)
assert.Equal(t, "Instead of 'invalidEnum', use one of the allowed values: 'available, pending, sold'", errors[0].HowToFix)
}
func TestNewValidator_PetStore_PetFindByTagsGet200_Valid(t *testing.T) {
// create a new document from the petstore spec
doc, _ := libopenapi.NewDocument(petstoreBytes)
// create a doc
v, _ := NewValidator(doc)
// create a pet
body := map[string]interface{}{
"id": 123,
"name": "cotton",
"category": map[string]interface{}{
"id": 123,
"name": "dogs",
},
"photoUrls": []string{"https://example.com"},
}
// marshal the body into bytes.
bodyBytes, _ := json.Marshal([]interface{}{body}) // operation returns an array of pets
// create a new put request
request, _ := http.NewRequest(http.MethodGet,
"https://hyperspace-superherbs.com/pet/findByTags?tags=fuzzy&tags=wuzzy", nil)
request.Header.Set("Content-Type", "application/json")
// simulate a request/response, in this case the contract returns a 200 with the pet we just created.
res := httptest.NewRecorder()
handler := func(w http.ResponseWriter, r *http.Request) {
w.Header().Set(helpers.ContentTypeHeader, helpers.JSONContentType)
w.WriteHeader(http.StatusOK)
_, _ = w.Write(bodyBytes)
}
// fire the request
handler(res, request)
// validate the response (should be clean)
valid, errors := v.ValidateHttpRequestResponse(request, res.Result())
// should all be perfectly valid.
assert.True(t, valid)
assert.Len(t, errors, 0)
}
func TestNewValidator_PetStore_PetFindByTagsGet200_InvalidExplode(t *testing.T) {
// create a new document from the petstore spec
doc, _ := libopenapi.NewDocument(petstoreBytes)
// create a doc
v, _ := NewValidator(doc)
// create a pet
body := map[string]interface{}{
"id": 123,
"name": "cotton",
"category": map[string]interface{}{
"id": 123,
"name": "dogs",
},
"photoUrls": []string{"https://example.com"},
}
// marshal the body into bytes.
bodyBytes, _ := json.Marshal([]interface{}{body}) // operation returns an array of pets
// create a new put request
request, _ := http.NewRequest(http.MethodGet,
"https://hyperspace-superherbs.com/pet/findByTags?tags=fuzzy,wuzzy", nil)
request.Header.Set("Content-Type", "application/json")
// simulate a request/response
res := httptest.NewRecorder()
handler := func(w http.ResponseWriter, r *http.Request) {
w.Header().Set(helpers.ContentTypeHeader, helpers.JSONContentType)
w.WriteHeader(http.StatusOK)
_, _ = w.Write(bodyBytes)
}
// fire the request
handler(res, request)
// validate the response
valid, errors := v.ValidateHttpRequestResponse(request, res.Result())
// will fail.
assert.False(t, valid)
assert.Len(t, errors, 2) // will fire allow reserved error, and explode error.
}
func TestNewValidator_PetStore_PetGet200_Valid(t *testing.T) {
// create a new document from the petstore spec
doc, _ := libopenapi.NewDocument(petstoreBytes)
// create a doc
v, _ := NewValidator(doc)
// create a pet
body := map[string]interface{}{
"id": 123,
"name": "cotton",
"category": map[string]interface{}{
"id": 123,
"name": "dogs",
},
"photoUrls": []string{"https://example.com"},
}
// marshal the body into bytes.
bodyBytes, _ := json.Marshal(body) // operation returns pet
// create a new put request