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utils.test.js
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utils.test.js
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/**
* Module dependencies.
*/
require('./common');
var utils = require('mongoose/utils')
, StateMachine = utils.StateMachine;
/**
* Setup.
*/
var ActiveRoster = StateMachine.ctor('require', 'init', 'modify');
/**
* Test.
*/
module.exports = {
'test array erasing util': function(){
function fn(){};
var arr = [fn, 'test', 1]
, arr2 = [fn, 'a', 'b', fn, 'c'];
utils.erase(arr, fn);
arr.should.have.length(2);
arr.should.eql(['test', 1]);
utils.erase(arr2, fn);
arr2.should.have.length(3);
arr2.should.eql(['a', 'b', 'c']);
},
'should detect a path as required if it has been required': function () {
var ar = new ActiveRoster();
ar.require('hello');
ar.stateOf('hello').should.equal('require');
},
'should detect a path as inited if it has been inited': function () {
var ar = new ActiveRoster();
ar.init('hello');
ar.stateOf('hello').should.equal('init');
},
'should detect a path as modified': function () {
var ar = new ActiveRoster();
ar.modify('hello');
ar.stateOf('hello').should.equal('modify');
},
'should remove a path from an old state upon a state change': function () {
var ar = new ActiveRoster();
ar.init('hello');
ar.modify('hello');
ar.states.init.should.not.have.property('hello');
ar.states.modify.should.have.property('hello');
},
'forEach should be able to iterate through the paths belonging to one state': function () {
var ar = new ActiveRoster();
ar.init('hello');
ar.init('goodbye');
ar.modify('world');
ar.require('foo');
ar.forEach('init', function (path) {
['hello', 'goodbye'].should.contain(path);
});
},
'forEach should be able to iterate through the paths in the union of two or more states': function () {
var ar = new ActiveRoster();
ar.init('hello');
ar.init('goodbye');
ar.modify('world');
ar.require('foo');
ar.forEach('modify', 'require', function (path) {
['world', 'foo'].should.contain(path);
});
},
'forEach should iterate through all paths that have any state if given no state arguments': function () {
var ar = new ActiveRoster();
ar.init('hello');
ar.init('goodbye');
ar.modify('world');
ar.require('foo');
ar.forEach(function (path) {
['hello', 'goodbye', 'world', 'foo'].should.contain(path);
});
},
'should be able to detect if at least one path exists in a set of states': function () {
var ar = new ActiveRoster();
ar.init('hello');
ar.modify('world');
ar.some('init').should.be.true;
ar.some('modify').should.be.true;
ar.some('require').should.be.false;
ar.some('init', 'modify').should.be.true;
ar.some('init', 'require').should.be.true;
ar.some('modify', 'require').should.be.true;
},
'should be able to `map` over the set of paths in a given state': function () {
var ar = new ActiveRoster();
ar.init('hello');
ar.modify('world');
ar.require('iAmTheWalrus');
var suffixedPaths = ar.map('init', 'modify', function (path) {
return path + '-suffix';
});
suffixedPaths.should.eql(['hello-suffix', 'world-suffix']);
},
"should `map` over all states' paths if no states are specified in a `map` invocation": function () {
var ar = new ActiveRoster();
ar.init('hello');
ar.modify('world');
ar.require('iAmTheWalrus');
var suffixedPaths = ar.map(function (path) {
return path + '-suffix';
});
suffixedPaths.should.eql(['iAmTheWalrus-suffix', 'hello-suffix', 'world-suffix']);
},
'test utils.options': function () {
var o = { a: 1, b: 2, c: 3, 0: 'zero1' };
var defaults = { b: 10, d: 20, 0: 'zero2' };
var result = utils.options(defaults, o);
result.a.should.equal(1);
result.b.should.equal(2);
result.c.should.equal(3);
result.d.should.equal(20);
o.d.should.equal(result.d);
result['0'].should.equal('zero1');
var result2 = utils.options(defaults);
result2.b.should.equal(10);
result2.d.should.equal(20);
result2['0'].should.equal('zero2');
// same properties/vals
defaults.should.eql(result2);
// same object
defaults.should.not.equal(result2);
}
};