swagger-to-mock

Mock data generator CLI for Swagger3 (OpenAPI 3)

Install

npm i -g swagger-to-mock

Generate mock data

swagger-to-mock <YOUR SWAGGER FILE>

will generate JSON file per each API response.
JSON data values should be example values on your swagger if you specified examples.
Otherwise, swagger-to-mock follows data type rules and generate arbitrary values.
If there is no rule like format, values should be below.

string: ""
number: 0
integer: 0
boolean: true
array: []
object: {}

Example

If we pass an example YAML file

responses:
  '200':
    description: pet response
    content:
      application/json:
        schema:
          type: array
          items:
            $ref: '#/components/schemas/Pet'

swagger-to-mock will generate file named pets_get_200.json and the body should be below

[
  {
    "name": "",
    "tag": "",
    "id": 0
  }
]

File Name

Naming JSON file will follow the format below. ${API_PATH}_${HTTP_METHOD}_${RESPONSE_STATUS}.json

Data Type Support [In Progress]

swagger-to-mock will follow rules based on OpenAPI 3 specification for each data type, If the example value is not specified.

Mixed Types

If you specify oneOf or anyOf, The value should be at the top type.

Numbers

• format
• Minimum and Maximum
• Multiples

String

• format
• pattern

Boolean

value should be true or false.

Null

Arrays

• Mixed-Type Arrays
• Array Length

Objects

• Free-Form Object

Files

Any Type