JSON test data generator, node.js server accepting JSON Schema with annotations conforming to json-schema-faker, and returns JSON sample data. This server is meant to provide services during an automated build process in order to provide sample data given an annotated JSON Schema file.

See https://github.com/json-schema-faker/json-schema-faker for more information on the format of the JSON Schema annotations.

This is a simple Dockerfile which uses the standard Node -onbuild image to automatically load and run the server.js file. The server listens on port 3000 (specified in the package.json file and modifiable via standard process.env.npm_package_config_port)

To run the image:

% docker run -it --rm -p 3000:3000 cjnygard/json-test-data

The server expects the annotated JSON Schema file to be send to the URL as a POST command. The resulting JSON output will be provided as 'Content-Type: application/json'.

% curl -v -H "Content-Type: application/json" --data-binary \
"@test.json" -X POST https://docker:3000/schema/v1/api > data.json

The POST query can be modified with two URL parameters.

The n= will trigger multiple instances of the test data to be generated, according to the number specified in . For example, n=3 will output an array containing three instances of the JSON Schema structure as concrete JSON elements.

When n is not specified or n=1, the server will remove the enclosing array and just return the single generated JSON element.

% curl -v -H "Content-Type: application/json" --data-binary \
"@test.json" -X POST https://docker:3000/schema/v1/api?n=3

The addRequired=1 flag will trigger the server to scan through the JSON Schema and add appropriate "required" : [...] arrays ensuring that all Schema elements are emitted in the test data.

Currently, the addRequired flag does not guess at the appropriate content of the faked data, it just adds the fields to the array to ensure something is output for all fields.

% curl -v -H "Content-Type: application/json" --data-binary \
"@test.json" -X POST https://docker:3000/schema/v1/api?addRequired=1

See https://github.com/cjnygard/rest-maven-plugin for an example of a Maven plugin which performs the REST POST request with JSON Schema to transform the output into JSON test data automatically.