[Bug]: [oneOf decode failed]

[akkuman]

What version of ogen are you using?

v1.1.0

Can this issue be reproduced with the latest version?

Yes

What did you do?

command: go run -mod=mod github.com/ogen-go/ogen/cmd/ogen -clean -config gen.cfg.yml -target api -package api openapi.yaml

• gen.cfg.yml

generator:
  features:
    disable:
      - 'paths/server'

• openapi.yaml

openapi: 3.0.1
info:
  title: test
  description: ''
  version: 1.0.0
tags: []
paths:
  /tasks/{id}/data:
    get:
      tags: []
      parameters:
        - name: id
          in: path
          description: ''
          required: true
          schema:
            type: string
        - name: page
          in: query
          description: ''
          required: false
          schema:
            type: number
        - name: size
          in: query
          description: ''
          required: false
          schema:
            type: number
      responses:
        '200':
          description: success
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                  message:
                    type: string
                    enum:
                      - error
                      - success
                  total:
                    type: integer
                  error:
                    type: string
                  data:
                    type: array
                    items:
                      allOf:
                        - type: object
                          additionalProperties: false
                          properties:
                            _id:
                              type: string
                            _tid:
                              type: string
                          required:
                            - _id
                            - _tid
                        - oneOf:
                            - $ref: '#/components/schemas/baiduwenku'
                            - $ref: '#/components/schemas/doc88'
                            - $ref: '#/components/schemas/xianlanben'
                required:
                  - status
                  - message
                  - total
                  - data
                  - error
      security:
        - apikey-header-Authorization: []
components:
  schemas:
    xianlanben:
      type: object
      properties:
        bundleid:
          type: string
          title: bundleid
        dataType:
          type: integer
        description:
          type: string
        onlineStatus:
          type: integer
          enum:
            - 1
            - 0
        validBundleid:
          type: string
        logo:
          type: string
        name:
          type: string
        prid:
          type: string
        comments:
          type: integer
        developer:
          type: string
        platform:
          type: string
        category:
          type: string
        version:
          type: string
        appcreatedate:
          type: string
        appmodifydate:
          type: string
      required:
        - bundleid
        - dataType
        - description
        - onlineStatus
        - validBundleid
        - logo
        - name
        - prid
        - comments
        - developer
        - platform
        - category
        - version
        - appcreatedate
        - appmodifydate
      description: app list
    doc88:
      type: object
      properties:
        title:
          type: string
        link:
          type: string
        desc:
          type: string
        created_time:
          type: string
        pagetotal:
          type: string
        file_type:
          type: string
          description: docx\pdf
        viewcount:
          type: string
      required:
        - title
        - link
        - desc
        - created_time
        - pagetotal
        - file_type
        - viewcount
    baiduwenku:
      type: object
      properties:
        file_type:
          type: string
          description: docx/pdf
        cover_imgs:
          type: array
          items:
            type: string
        title:
          type: string
        tags:
          type: string
        desc:
          type: string
        score:
          type: string
        pagetotal:
          type: string
        viewcount:
          type: string
        link:
          type: string
      required:
        - file_type
        - cover_imgs
        - title
        - tags
        - desc
        - score
        - pagetotal
        - viewcount
        - link
  securitySchemes:
    apikey-header-Authorization:
      type: apiKey
      in: header
      name: Authorization
servers: []

• test.go

func TestOneOf(t *testing.T) {
	data := `{
		"status": "string",
		"message": "error",
		"total": 0,
		"error": "string",
		"data": [
			{
				"_id": "string",
				"_tid": "string",
				"file_type": "string",
				"cover_imgs": [
					"string"
				],
				"title": "string",
				"tags": "string",
				"desc": "string",
				"score": "string",
				"pagetotal": "string",
				"viewcount": "string",
				"link": "string"
			}
		]
	}`
	d := jx.DecodeBytes([]byte(data))
	var response api.TasksIDDataGetOK
	if err := response.Decode(d); err != nil {
		t.Error(err)
	}
}

error: decode TasksIDDataGetOK: callback: decode field "data": callback: decode TasksIDDataGetOKDataItem: callback: unexpected field "file_type"

What did you expect to see?

What did you see instead?