@microsoft/fast-permutator

FAST Permutator

FAST Permutator has been deprecated. Use FAST Tooling React instead.

The FAST permutator creates all possible data permutations from a given JSON Schema, allowing for deep testing or display of complex data sets.

Use

Including the permutator

Add the permutator as a required variable:

const permutator = require('@microsoft/fast-permutator');

Permutating data sets

The main export of the permutator is to recieve a schema and any schema references. For example, take this simple schema:

let schema = {
    type: "object",
    properties: {
        stringItem: {
            type: "string",
            example: "Hello World"
        },
        booleanItem: {
            type: "boolean"
        }
    },
    required: [
        "stringItem"
    ]
};

permutator(schema);

This main export permutator will generate the following data:

[
    {
        stringItem: "Hello World"
    },
    {
        stringItem: "Hello World"
        booleanItem: true        
    },
    {
        stringItem: "Hello World"
        booleanItem: false        
    }
]

If an example or a default is not provided, fake data will be generated.

Exporting an example

Use the export getExample to retrieve an example piece of data.

permutator.getExample(schema);

Simplifying schemas

Use the export simplifySchemas to show all schema permutations. This can be useful for extrapolating out all possible schema combinations.

permutator.simplifySchemas(schema, references);

Finding properties

Use the export getDeepPropLocations to find properties within the schema.

permutator.getDeepPropLocations(schema, propertyName);

Resolve references

Use the export resolveReferences to resolve the references of a schema by consolidating them with their referenced schema.

permutator.resolveReferences(schema, references);

Resolving properties

Use the export resolveSchemaProps to resolve the given props for a schema.

permutator.resolveSchemaProps(schema, ['$ref', 'allOf']);

Developing

Contribute to the ES6 source files in the lib folder.

Testing

Run npm run test to test the exposed utilities and schemas

Building

Run npm run build to build before npm publish to convert files to ES5 from ES6.

Special properties

• whitelisted ignores a property
• example is a piece of supplied example data