[#347] OpenAPI v3: validation for SecurityRequirement#{securityScheme…

[ghillairet]

…Name}

See #347

[tfesenko]

@ghillairet , thanks for a nice set of tests! Passed initial code review:

• Requested several minor changes
• Possibly we will need to rephrase some of the new error messages

[ghillairet]

@tfesenko

I updated the messages and other suggestions.

Here are the new messages preceded by the invalid specs:

  /pets/{petId}:
    get:
      summary: Info for a specific pet
      operationId: showPetById
      security:
        - testScheme:
           - foo          
      responses:
        '200':
          description: Expected response to a valid request
components:            
  securitySchemes:
    testScheme:
      type: http

  /pets/{petId}:
    get:
      summary: Info for a specific pet
      operationId: showPetById
      security:
        - testScheme: [] 
      responses:
        '200':
          description: Expected response to a valid request
components:            
  securitySchemes:
    testScheme:
      type: oauth2

  /pets/{petId}:
    get:
      summary: Info for a specific pet
      operationId: showPetById
      security:
        - testScheme:
          - foo
      responses:
        '200':
          description: Expected response to a valid request
components:            
  securitySchemes:
    testScheme:
      type: oauth2
      flows:
        implicit:
          scopes:
            "write:pets": something

[tedepstein]

Looks good, @ghillairet , thanks.

[tfesenko]

Thanks! Passed QA and code review