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test.js
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test.js
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'use strict';
require('mocha');
var assert = require('assert');
var FragmentCache = require('./');
var MapCache = require('map-cache');
describe('fragment-cache', function() {
it('should export a function', function() {
assert.equal(typeof FragmentCache, 'function');
});
it('should create an instance of FragmentCache', function() {
var fragment = new FragmentCache();
assert(fragment instanceof FragmentCache);
});
});
describe('methods', function() {
describe('.cache', function() {
it('should create a cache', function() {
var fragment = new FragmentCache();
fragment.cache('foo');
assert(fragment.caches.hasOwnProperty('foo'));
});
it('should return the cache after creating it', function() {
var fragment = new FragmentCache();
fragment.cache('foo');
var cache = fragment.get('foo');
assert.equal(cache, fragment.caches.foo);
});
});
describe('.get', function() {
it('should get a cache', function() {
var fragment = new FragmentCache();
fragment.cache('foo');
var cache = fragment.get('foo');
assert(cache);
assert.equal(typeof cache, 'object');
});
it('should be an instance of MapCache', function() {
var fragment = new FragmentCache();
fragment.cache('foo');
var cache = fragment.get('foo');
assert(cache);
assert(cache instanceof MapCache);
});
it('should get an item from a cache', function() {
var fragment = new FragmentCache();
var cache = fragment.cache('foo');
fragment.set('foo', 'a', 'b');
assert.deepEqual(fragment.get('foo', 'a'), 'b');
assert.deepEqual(fragment.cache('foo').get('a'), 'b');
});
});
describe('.set', function() {
it('should set items on the __data__ object of a cache', function() {
var fragment = new FragmentCache();
var cache = fragment.cache('foo');
fragment.set('foo', 'a', 'b');
assert(cache.__data__.hasOwnProperty('a'));
assert.equal(cache.__data__.a, 'b');
});
});
describe('.has', function() {
it('should return true when `key` exists on a cache', function() {
var fragment = new FragmentCache();
var cache = fragment.cache('foo');
cache.set('a', 'b');
assert(fragment.has('foo', 'a'));
});
});
describe('.cache.set', function() {
it('should set items on cache.__data__', function() {
var fragment = new FragmentCache();
var cache = fragment.cache('foo');
cache.set('a', 'b');
assert(cache.__data__.hasOwnProperty('a'));
assert.equal(cache.__data__.a, 'b');
});
});
describe('.cache.get', function() {
it('should get items from a cache', function() {
var fragment = new FragmentCache();
var cache = fragment.cache('foo');
cache.set('a', 'b');
assert.equal(cache.get('a'), 'b');
});
});
describe('.cache.has', function() {
it('should return true when an item exists on a cache', function() {
var fragment = new FragmentCache();
var cache = fragment.cache('foo');
cache.set('a', 'b');
assert(cache.has('a'));
});
});
});