web hooks encode test tweaks

gistfile1.swift

func test_webhooks_encode() throws {
    let op = OpenAPI.Operation(responses: [:])
    let document = OpenAPI.Document(
        info: .init(title: "API", version: "1.0"),
        servers: [],
        paths: [:],
        webhooks:  [
            "webhook-test": .init(get: op, put: op, post: op, delete: op, options: op, head: op, patch: op, trace: op)
        ],
        components: .noComponents,
        externalDocs: .init(url: URL(string: "http://google.com")!)
    )
    let encodedDocument = try orderUnstableTestStringFromEncoding(of: document)

    let documentJSON: String? =
        """
    {
      "externalDocs" : {
        "url" : "http:\\/\\/google.com"
      },
      "info" : {
        "title" : "API",
        "version" : "1.0"
      },
      "openapi" : "3.0.0",
      "paths" : {

      },
      "webhooks" : {
        "webhook-test" : {
          "delete" : {
            "responses" : {

            }
          },
          "get" : {
            "responses" : {

            }
          },
          "head" : {
            "responses" : {

            }
          },
          "options" : {
            "responses" : {

            }
          },
          "patch" : {
            "responses" : {

            }
          },
          "post" : {
            "responses" : {

            }
          },
          "put" : {
            "responses" : {

            }
          },
          "trace" : {
            "responses" : {

            }
          }
        }
      }
    }
    """

    assertJSONEquivalent(encodedDocument, documentJSON)
}