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describe('on() unit tests', function() {
it('registers event listener on document by default', function () {
let called = false
htmx.on('custom:test', () => called = true)
document.dispatchEvent(new Event('custom:test'))
assert.isTrue(called)
})
it('registers event listener on specific element', function () {
let div = createProcessedHTML('<div></div>')
let called = false
htmx.on(div, 'custom', () => called = true)
div.dispatchEvent(new Event('custom'))
assert.isTrue(called)
})
it('returns the callback', function () {
let callback = () => {}
let returned = htmx.on('custom', callback)
assert.equal(returned, callback)
})
it('receives event object', function () {
let receivedEvent = null
htmx.on('custom:test2', (evt) => receivedEvent = evt)
document.dispatchEvent(new Event('custom:test2'))
assert.isNotNull(receivedEvent)
assert.equal(receivedEvent.type, 'custom:test2')
})
it('works with selector string for element', function () {
createProcessedHTML('<div id="target"></div>')
let called = false
htmx.on('#target', 'custom', () => called = true)
document.getElementById('target').dispatchEvent(new Event('custom'))
assert.isTrue(called)
})
});
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