Runtime-Mock-Routes

Runtime-Mock-Routes is a nodejs application for defining parameterized route and response bodies. This is ideal for mocking 3rd party services.

Installation

Use the package manager npm or yarn to install Runtime-Mock-Routes.

npm install -g @centeredgesoft/runtime-mock-routes

Usage

runtime-mock-routes -p 8080 -s ./seed.json

All command line options are optional. If a seed file is supplied, it must be one of the following

• a json file that matches a RuntimeRequestCollection
• a js file with a default export of type RuntimeRequestCollection
• a js file with a default export of a function that returns a RuntimeRequestCollection

type SupportedMethodsType = ['GET', 'POST', 'PUT', 'PATCH', 'DELETE'];
const SupportedMethodsColection: SupportedMethodsType = ['GET', 'POST', 'PUT', 'PATCH', 'DELETE'];
type SupportedMethod = SupportedMethodsType[number];

export interface RuntimeRequestMethodBody {
    body: any;
    status?: any;
    headers?: Record<string, string>;
}

export type RuntimeRequestMethodBodyCollection = Partial<Record<SupportedMethod, RuntimeRequestMethodBody>>;

export interface RuntimeRequestBody {
    path: string;
    methods: RuntimeRequestMethodBodyCollection;
}

export interface RuntimeRequestCollection {
    [path: string]: RuntimeRequestBody;
}

For example:

{
    "/test":{
        "path":"/test",
        "methods":{
            "GET": {
                "body": {},
                "status": 200,
                "headers": {
                    "X-Custom-Header": "yes"
                }
            }
        }
    }
}

The following environment variables can also be used in place of command line options

RUNTIME_MOCK_ROUTES_PORT=8080
RUNTIME_MOCK_ROUTES_FILE_PATH=/seed.json

Route parameters are specified in path via a colon followed by the parameter name. '/users/:id'

Template strings that are compatible with handlebars can be used for the body property of a RuntimeRequestMethodBody. The application will use path and query params as data for the tempalte. This application makes use of faker and chance as Handlebars Helpers.

{{params.<path-param-name>}} {{query.<query-param-name>}} 
{{body.<post-body-property>}}
{{headers.<header-property-name>}}
{{ faker "lorem.words" 5}} {{ chance "guid"}}

If the rendered template is valid JSON, the response will be of type application/json.

Also, be aware that instead of a direct JSON response, the body can also be a function that takes in a RequestParameters and returns a body response. The response will still be processed through handlebars.

Routes

• GET / returns all of the currently defined routes
• POST / Takes a RuntimeRequestBody and adds it to the collection or updates the existing entry if it exists.
• PUT / Takes a RuntimeRequestCollection and replaces the current collection.
• [GET,POST,PUT,PATCH,DELETE] /* The result of retrieving an entry in the collection, 404 otherwise
• DELETE /?path=<path> Deletes items from the collection

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to add/update tests as appropriate.

License

MIT