@girders-elements/core/dist/es5/registry/__tests__/Registry.js

Girders Elements is an architectural framework that assists with building data-driven apps with React or React Native.

'use strict';

var _immutable=require('immutable');

var _Registry=require('../Registry');var _Registry2=_interopRequireDefault(_Registry);function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj};}

describe('Registry',function(){
var registry=new _Registry2.default();

afterEach(function(){return registry.reset();});

it('can be created and used in key-value (map) fashion',function(){
expect(registry.get('detective')).toEqual(undefined);

registry.register('detective','Sherlock Holmes');
expect(registry.get('detective')).toEqual('Sherlock Holmes');
});

it('allows arrays for keys',function(){
registry.register(['a','b'],1);

expect(registry.get('detective')).toBeUndefined();
expect(registry.get(['a','c'])).toBeUndefined();
expect(registry.get(['a','b'])).toEqual(1);
});

it('allows lists for keys; can be used interexchangeably with arrays',function(){
registry.register(['a','b'],1);
registry.register(_immutable.List.of('c','d'),2);

expect(registry.get(_immutable.List.of('a','b'))).toEqual(1);
expect(registry.get(_immutable.List.of('c','d'))).toEqual(2);
expect(registry.get(['c','d'])).toEqual(2);
});

it('makes treats X and [X] equivalently',function(){
registry.register('a',1);
registry.register(['b'],2);

expect(registry.get('a')).toEqual(1);
expect(registry.get(['a'])).toEqual(1);

expect(registry.get('b')).toEqual(2);
expect(registry.get(['b'])).toEqual(2);
});

it('when using lists, performs lookups by lessening the specificity',function(){
registry.register('a',1);
registry.register(['a','b'],2);

expect(registry.get('a')).toEqual(1);
expect(registry.get(['a','b'])).toEqual(2);
expect(registry.get(['a','c'])).toEqual(1);
expect(registry.get(['a','c','b'])).toEqual(1);
expect(registry.get(['a','b','c'])).toEqual(2);
});

it('it allows the empty list as a key, (effectively used as default value)',function(){
registry.register([],-1);
registry.register(['x'],1);

expect(registry.get([])).toEqual(-1);
expect(registry.get('xyz')).toEqual(-1);
expect(registry.get('x')).toEqual(1);
expect(registry.get(['x','y'])).toEqual(1);
expect(registry.get(['y','x'])).toEqual(-1);
});

it('forgets older registrations',function(){
registry.register('x',1);
registry.register('x',2);

expect(registry.get('x')).toEqual(2);
});
});