swagger-codegen generate should error out on invalid spec - invalid field name

swagger-codegen generate should error out on invalid spec - invalid field name

Description

Notice the invalid descripion. This affects definitions as well.

Looks like pretty much everything is affected. Besides common typos, I often run into this in cases where $ref: ... is expected but I accidentally entered schema: {$ref: ...

Swagger-codegen version

current master; HEAD = 1c160df33897898da1c39f230c737eb6a313e6ba

Swagger declaration file content or url

swagger: '2.0'

info:
  title: "sscce"
  version: '1.0'
  description: sscce

paths:
  /foo:
    post:
      descripion: foo
      responses:
        "200":
          description: foo
          type: string

Command line used for generation

JAR=".../swagger-codegen.git/modules/swagger-codegen-cli/target/swagger-codegen-cli.jar"
java -jar "${JAR}" generate -i ~/sscce.yaml -l html2 -o foo

Probably target independent, had same issues with html

Steps to reproduce

Related issues

Suggest a Fix

Start by running the supplied swagger-codegen CLI command with the YAML declaration containing the misspelled descripion field. Trace where the specification is parsed and validated, then confirm that generation stops with an error for invalid fields in operations and definitions rather than proceeding silently.