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Diffstat (limited to 'node_modules/ultron/test.js')
-rw-r--r-- | node_modules/ultron/test.js | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/node_modules/ultron/test.js b/node_modules/ultron/test.js new file mode 100644 index 000000000..1fd4f1bb5 --- /dev/null +++ b/node_modules/ultron/test.js @@ -0,0 +1,327 @@ +/* istanbul ignore next */ +describe('Ultron', function () { + 'use strict'; + + var EventEmitter = require('eventemitter3') + , EE = require('events').EventEmitter + , assume = require('assume') + , Ultron = require('./') + , ultron + , ee; + + beforeEach(function () { + ee = new EventEmitter(); + ultron = new Ultron(ee); + }); + + afterEach(function () { + ultron.destroy(); + ee.removeAllListeners(); + }); + + it('is exposed as a function', function () { + assume(Ultron).is.a('function'); + }); + + it('can be initialized without the new keyword', function () { + assume(Ultron(ee)).is.instanceOf(Ultron); + }); + + it('assigns a unique id to every instance', function () { + for (var i = 0; i < 100; i++) { + assume(ultron.id).does.not.equal((new Ultron()).id); + } + }); + + it('allows removal through the event emitter', function () { + function foo() {} + function bar() {} + + ultron.on('foo', foo); + ultron.once('foo', bar); + + assume(foo.__ultron).equals(ultron.id); + assume(bar.__ultron).equals(ultron.id); + assume(ee.listeners('foo').length).equals(2); + + ee.removeListener('foo', foo); + assume(ee.listeners('foo').length).equals(1); + + ee.removeListener('foo', bar); + assume(ee.listeners('foo').length).equals(0); + }); + + describe('#on', function () { + it('assigns a listener', function () { + assume(ee.listeners('foo').length).equals(0); + + function foo() {} + + ultron.on('foo', foo); + assume(ee.listeners('foo').length).equals(1); + assume(ee.listeners('foo')[0]).equals(foo); + }); + + it('tags the assigned function', function () { + assume(ee.listeners('foo').length).equals(0); + + ultron.on('foo', function () {}); + assume(ee.listeners('foo')[0].__ultron).equals(ultron.id); + }); + + it('also passes in the context', function (next) { + var context = 1313; + + ultron.on('foo', function (a, b, c) { + assume(a).equals('a'); + assume(b).equals('b'); + assume(c).equals('c'); + + assume(this).equals(context); + + next(); + }, context); + + ee.emit('foo', 'a', 'b', 'c'); + }); + + it('works with regular eventemitters as well', function (next) { + var ee = new EE() + , ultron = new Ultron(ee); + + ultron.on('foo', function (a, b, c) { + assume(a).equals('a'); + assume(b).equals('b'); + assume(c).equals('c'); + + next(); + }); + + ee.emit('foo', 'a', 'b', 'c'); + }); + }); + + describe('#once', function () { + it('assigns a listener', function () { + assume(ee.listeners('foo').length).equals(0); + + function foo() {} + ultron.once('foo', foo); + assume(ee.listeners('foo').length).equals(1); + assume(ee.listeners('foo')[0]).equals(foo); + }); + + it('tags the assigned function', function () { + assume(ee.listeners('foo').length).equals(0); + + ultron.once('foo', function () {}); + assume(ee.listeners('foo')[0].__ultron).equals(ultron.id); + }); + + it('also passes in the context', function (next) { + var context = 1313; + + ultron.once('foo', function (a, b, c) { + assume(a).equals('a'); + assume(b).equals('b'); + assume(c).equals('c'); + + assume(this).equals(context); + + next(); + }, context); + + ee.emit('foo', 'a', 'b', 'c'); + ee.emit('foo', 'a', 'b', 'c'); // Ensure that we don't double execute + }); + + it('works with regular eventemitters as well', function (next) { + var ee = new EE() + , ultron = new Ultron(ee); + + ultron.once('foo', function (a, b, c) { + assume(a).equals('a'); + assume(b).equals('b'); + assume(c).equals('c'); + + next(); + }); + + ee.emit('foo', 'a', 'b', 'c'); + ee.emit('foo', 'a', 'b', 'c'); // Ensure that we don't double execute + }); + }); + + describe('#remove', function () { + it('removes only our assigned `on` listeners', function () { + function foo() {} + function bar() {} + + ee.on('foo', foo); + ultron.on('foo', bar); + assume(ee.listeners('foo').length).equals(2); + + ultron.remove('foo'); + assume(ee.listeners('foo').length).equals(1); + assume(ee.listeners('foo')[0]).equals(foo); + }); + + it('removes our private __ultron references', function () { + function once() {} + function on() {} + + assume('__ultron' in once).is.false(); + assume('__ultron' in on).is.false(); + + ultron.on('foo', on); + ultron.once('bar', once); + + assume('__ultron' in once).is.true(); + assume('__ultron' in on).is.true(); + + ultron.remove('foo, bar'); + + assume('__ultron' in once).is.false(); + assume('__ultron' in on).is.false(); + + ultron.destroy(); + + ee = new EE(); + ultron = new Ultron(ee); + + assume('__ultron' in once).is.false(); + assume('__ultron' in on).is.false(); + + ultron.on('foo', on); + ultron.once('bar', once); + + assume('__ultron' in once).is.true(); + assume('__ultron' in on).is.true(); + + ultron.remove('foo, bar'); + + assume('__ultron' in once).is.false(); + assume('__ultron' in on).is.false(); + }); + + it('removes only our assigned `once` listeners', function () { + function foo() {} + function bar() {} + + ee.once('foo', foo); + ultron.once('foo', bar); + assume(ee.listeners('foo').length).equals(2); + + ultron.remove('foo'); + assume(ee.listeners('foo').length).equals(1); + assume(ee.listeners('foo')[0]).equals(foo); + }); + + it('removes only our assigned `once` listeners from regular EE', function () { + var ee = new EE() + , ultron = new Ultron(ee); + + function foo() {} + function bar() {} + + ee.once('foo', foo); + ultron.once('foo', bar); + assume(ee.listeners('foo').length).equals(2); + + ultron.remove('foo'); + assume(ee.listeners('foo').length).equals(1); + assume(ee.listeners('foo')[0].listener).equals(foo); + }); + + it('removes all assigned events if called without args', function () { + function foo() {} + function bar() {} + + ultron.on('foo', foo); + ultron.on('bar', bar); + + assume(ee.listeners('foo').length).equals(1); + assume(ee.listeners('bar').length).equals(1); + + ultron.remove(); + + assume(ee.listeners('foo').length).equals(0); + assume(ee.listeners('bar').length).equals(0); + }); + + it('removes multiple listeners based on args', function () { + function foo() {} + function bar() {} + function baz() {} + + ultron.on('foo', foo); + ultron.on('bar', bar); + ultron.on('baz', baz); + + assume(ee.listeners('foo').length).equals(1); + assume(ee.listeners('bar').length).equals(1); + assume(ee.listeners('baz').length).equals(1); + + ultron.remove('foo', 'bar'); + + assume(ee.listeners('foo').length).equals(0); + assume(ee.listeners('bar').length).equals(0); + assume(ee.listeners('baz').length).equals(1); + }); + + it('removes multiple listeners if first arg is seperated string', function () { + function foo() {} + function bar() {} + function baz() {} + + ultron.on('foo', foo); + ultron.on('bar', bar); + ultron.on('baz', baz); + + assume(ee.listeners('foo').length).equals(1); + assume(ee.listeners('bar').length).equals(1); + assume(ee.listeners('baz').length).equals(1); + + ultron.remove('foo, bar'); + + assume(ee.listeners('foo').length).equals(0); + assume(ee.listeners('bar').length).equals(0); + assume(ee.listeners('baz').length).equals(1); + }); + }); + + describe('#destroy', function () { + it('removes all listeners', function () { + function foo() {} + function bar() {} + function baz() {} + + ultron.on('foo', foo); + ultron.on('bar', bar); + ultron.on('baz', baz); + + assume(ee.listeners('foo').length).equals(1); + assume(ee.listeners('bar').length).equals(1); + assume(ee.listeners('baz').length).equals(1); + + ultron.destroy(); + + assume(ee.listeners('foo').length).equals(0); + assume(ee.listeners('bar').length).equals(0); + assume(ee.listeners('baz').length).equals(0); + }); + + it('removes the .ee reference', function () { + assume(ultron.ee).equals(ee); + ultron.destroy(); + assume(ultron.ee).equals(null); + }); + + it('returns booleans for state indication', function () { + assume(ultron.destroy()).is.true(); + assume(ultron.destroy()).is.false(); + assume(ultron.destroy()).is.false(); + assume(ultron.destroy()).is.false(); + }); + }); +}); |