react-native/packager/src/lib/__tests__/declareOpts-test.js

A framework for building native apps using React

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
'use strict';

jest.disableAutomock();

var declareOpts = require('../declareOpts');

describe('declareOpts', function() {
  it('should declare and validate simple opts', function() {
    var validate = declareOpts({
      name: {
        required: true,
        type: 'string',
      },
      age: {
        type: 'number',
        default: 21,
      },
    });
    var opts = validate({name: 'fooer'});

    expect(opts).toEqual({
      name: 'fooer',
      age: 21,
    });
  });

  it('should work with complex types', function() {
    var validate = declareOpts({
      things: {
        required: true,
        type: 'array',
      },
      stuff: {
        type: 'object',
        required: true,
      },
    });

    var opts = validate({things: [1, 2, 3], stuff: {hai: 1}});
    expect(opts).toEqual({
      things: [1, 2, 3],
      stuff: {hai: 1},
    });
  });

  it('should throw when a required option is not present', function() {
    var validate = declareOpts({
      foo: {
        required: true,
        type: 'number',
      },
    });

    expect(function() {
      validate({});
    }).toThrow();
  });

  it('should throw on invalid type', function() {
    var validate = declareOpts({
      foo: {
        required: true,
        type: 'number',
      },
    });

    expect(function() {
      validate({foo: 'lol'});
    }).toThrow();
  });

  it('should throw on extra options', function() {
    var validate = declareOpts({
      foo: {
        required: true,
        type: 'number',
      },
    });

    expect(function() {
      validate({foo: 1, lol: 1});
    }).toThrow();
  });
});