Bug Report Checklist

• [ x ] Have you provided a full/minimal spec to reproduce the issue?
• [ x ] Have you validated the input using an OpenAPI validator (example)?
• [ x ] What's the version of OpenAPI Generator used?
• [ x ] Have you search for related issues/PRs?
• [ x ] What's the actual output vs expected output?

Description

Enums that are declared inline are simply being declared as strings, while the same enum defined as a separate schema is properly captured with all legal values.

openapi-generator version

4.0.0-SNAPSHOT built from this commit: b128d14

OpenAPI declaration file content or url

sample.yaml:

openapi: "3.0.0" info: version: v1 title: Fake Service servers: - url: https://fake.net paths: /status/details: get: summary: Get status details operationId: getStatus responses: 200: description: Success content: application/json: schema: type: array items: $ref: "#/components/schemas/StatusDetails" components: schemas: State: type: string enum: - "IN_PROGRESS" - "READY" - "FAILED" StatusDetails: properties: id: type: string stateInline: # enum not captured, just declared as "string" type: string enum: - "IN_PROGRESS" - "READY" - "FAILED" state: # works as expected $ref: "#/components/schemas/State"

Command line used for generation

java -jar openapi-generator-cli.jar generate -i sample.yaml -g go -o ./sample-go

Steps to reproduce

1. git clone https://github.com/OpenAPITools/openapi-generator.git
2. cd openapi-generator
3. git checkout b128d1470709c44c6c7b6a906e1993d1c2758b52
4. mvn clean install
5. ln -s modules/openapi-generator-cli/target/openapi-generator-cli.jar .
6. java -jar openapi-generator-cli.jar generate -i sample.yaml -g go -o ./sample-go

Related issues/PRs

#2200
#1702
#1706

Actual vs Expected output

Go:
model_status_details.go (actual):

package openapi type StatusDetails struct { Id string `json:"id,omitempty"` StateInline string `json:"stateInline,omitempty"` State State `json:"state,omitempty"` }

model_status_details.go (expected):

package openapi type StatusDetails struct { Id string `json:"id,omitempty"` StateInline StateInlineEnum `json:"stateInline,omitempty"` State State `json:"state,omitempty"` } type StateInlineEnum string // List of StateInlineEnum const ( IN_PROGRESS StateInlineEnum = "IN_PROGRESS" READY StateInlineEnum = "READY" FAILED StateInlineEnum = "FAILED" )

Suggest a fix

PR has been put up: #2494