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| describe('Events', function() {
var Klass;
beforeEach(function() {
Klass = L.Class.extend({
includes: L.Mixin.Events
});
});
describe('#fireEvent', function() {
it('fires all listeners added through #addEventListener', function() {
var obj = new Klass(),
spy1 = sinon.spy(),
spy2 = sinon.spy(),
spy3 = sinon.spy(),
spy4 = sinon.spy(),
spy5 = sinon.spy();
spy6 = sinon.spy();
obj.addEventListener('test', spy1);
obj.addEventListener('test', spy2);
obj.addEventListener('other', spy3);
obj.addEventListener({ test: spy4, other: spy5 });
obj.addEventListener({'test other': spy6 });
expect(spy1.called).to.be(false);
expect(spy2.called).to.be(false);
expect(spy3.called).to.be(false);
expect(spy4.called).to.be(false);
expect(spy5.called).to.be(false);
expect(spy6.called).to.be(false);
obj.fireEvent('test');
expect(spy1.called).to.be(true);
expect(spy2.called).to.be(true);
expect(spy3.called).to.be(false);
expect(spy4.called).to.be(true);
expect(spy5.called).to.be(false);
expect(spy6.called).to.be(true);
expect(spy6.callCount).to.be(1);
});
it('provides event object to listeners and executes them in the right context', function() {
var obj = new Klass(),
obj2 = new Klass(),
obj3 = new Klass(),
obj4 = new Klass(),
foo = {};
function listener1(e) {
expect(e.type).to.eql('test');
expect(e.target).to.eql(obj);
expect(this).to.eql(obj);
expect(e.baz).to.eql(1);
}
function listener2(e) {
expect(e.type).to.eql('test');
expect(e.target).to.eql(obj2);
expect(this).to.eql(foo);
expect(e.baz).to.eql(2);
}
function listener3(e) {
expect(e.type).to.eql('test');
expect(e.target).to.eql(obj3);
expect(this).to.eql(obj3);
expect(e.baz).to.eql(3);
}
function listener4(e) {
expect(e.type).to.eql('test');
expect(e.target).to.eql(obj4);
expect(this).to.eql(foo);
expect(e.baz).to.eql(4);
}
obj.addEventListener('test', listener1);
obj2.addEventListener('test', listener2, foo);
obj3.addEventListener({ test: listener3 });
obj4.addEventListener({ test: listener4 }, foo);
obj.fireEvent('test', {baz: 1});
obj2.fireEvent('test', {baz: 2});
obj3.fireEvent('test', {baz: 3});
obj4.fireEvent('test', {baz: 4});
});
it('calls no listeners removed through #removeEventListener', function() {
var obj = new Klass(),
spy = sinon.spy(),
spy2 = sinon.spy(),
spy3 = sinon.spy(),
spy4 = sinon.spy(),
spy5 = sinon.spy();
obj.addEventListener('test', spy);
obj.removeEventListener('test', spy);
obj.fireEvent('test');
expect(spy.called).to.be(false);
obj.addEventListener('test2', spy2);
obj.addEventListener('test2', spy3);
obj.removeEventListener('test2');
obj.fireEvent('test2');
expect(spy2.called).to.be(false);
expect(spy3.called).to.be(false);
obj.addEventListener('test3', spy4);
obj.addEventListener('test4', spy5);
obj.removeEventListener({
test3: spy4,
test4: spy5
});
obj.fireEvent('test3');
obj.fireEvent('test4');
expect(spy4.called).to.be(false);
expect(spy5.called).to.be(false);
});
// added due to context-sensitive removeListener optimization
it('fires multiple listeners with the same context with id', function () {
var obj = new Klass(),
spy1 = sinon.spy(),
spy2 = sinon.spy(),
foo = {};
L.Util.stamp(foo);
obj.addEventListener('test', spy1, foo);
obj.addEventListener('test', spy2, foo);
obj.fireEvent('test');
expect(spy1.called).to.be(true);
expect(spy2.called).to.be(true);
});
it('removes listeners with stamped contexts', function () {
var obj = new Klass(),
spy1 = sinon.spy(),
spy2 = sinon.spy(),
foo = {};
L.Util.stamp(foo);
obj.addEventListener('test', spy1, foo);
obj.addEventListener('test', spy2, foo);
obj.removeEventListener('test', spy1, foo);
obj.fireEvent('test');
expect(spy1.called).to.be(false);
expect(spy2.called).to.be(true);
});
it('removes listeners with a stamp originally added without one', function() {
var obj = new Klass(),
spy1 = sinon.spy(),
spy2 = sinon.spy(),
foo = {};
obj.addEventListener('test', spy1, foo);
L.Util.stamp(foo);
obj.addEventListener('test', spy2, foo);
obj.removeEventListener('test', spy1, foo);
obj.removeEventListener('test', spy2, foo);
obj.fireEvent('test');
expect(spy1.called).to.be(false);
expect(spy2.called).to.be(false);
});
it('doesnt lose track of listeners when removing non existent ones', function () {
var obj = new Klass(),
spy = sinon.spy(),
spy2 = sinon.spy(),
foo = {},
foo2 = {};
L.Util.stamp(foo);
L.Util.stamp(foo2);
obj.addEventListener('test', spy, foo2);
obj.removeEventListener('test', spy, foo); // Decrements test_idx to 0, even though event listener isn't registered with foo's _leaflet_id
obj.removeEventListener('test', spy, foo2); // Doesn't get removed
obj.addEventListener('test', spy2, foo);
obj.fireEvent('test');
expect(spy.called).to.be(false);
});
});
describe('#on, #off & #fire', function() {
it('works like #addEventListener && #removeEventListener', function() {
var obj = new Klass(),
spy = sinon.spy();
obj.on('test', spy);
obj.fire('test');
expect(spy.called).to.be(true);
obj.off('test', spy);
obj.fireEvent('test');
expect(spy.callCount).to.be.lessThan(2);
});
it('does not override existing methods with the same name', function() {
var spy1 = sinon.spy(),
spy2 = sinon.spy(),
spy3 = sinon.spy();
var Klass2 = L.Class.extend({
includes: L.Mixin.Events,
on: spy1,
off: spy2,
fire: spy3
});
var obj = new Klass2();
obj.on();
expect(spy1.called).to.be(true);
obj.off();
expect(spy2.called).to.be(true);
obj.fire();
expect(spy3.called).to.be(true);
});
});
});
|