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tests.js
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tests.js
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(function($) {
QUnit.module('jQuery#placeholder');
var test = QUnit.test;
test('caches results of feature tests', function(assert) {
assert.strictEqual(typeof $.fn.placeholder.input, 'boolean', '$.fn.placeholder.input');
assert.strictEqual(typeof $.fn.placeholder.textarea, 'boolean', '$.fn.placeholder.textarea');
});
if ($.fn.placeholder.input && $.fn.placeholder.textarea) {
return;
}
var testElement = function($el, assert) {
var el = $el[0];
var placeholder = el.getAttribute('placeholder');
deepEqual($el.placeholder(), $el, 'should be chainable');
assert.strictEqual(el.value, placeholder, 'should set `placeholder` text as `value`');
assert.strictEqual($el.prop('value'), '', 'propHooks works properly');
assert.strictEqual($el.val(), '', 'valHooks works properly');
ok($el.hasClass('placeholder'), 'should have `placeholder` class');
// test on focus
$el.focus();
assert.strictEqual(el.value, '', '`value` should be the empty string on focus');
assert.strictEqual($el.prop('value'), '', 'propHooks works properly');
assert.strictEqual($el.val(), '', 'valHooks works properly');
ok(!$el.hasClass('placeholder'), 'should not have `placeholder` class on focus');
// and unfocus (blur) again
$el.blur();
assert.strictEqual(el.value, placeholder, 'should set `placeholder` text as `value`');
assert.strictEqual($el.prop('value'), '', 'propHooks works properly');
assert.strictEqual($el.val(), '', 'valHooks works properly');
ok($el.hasClass('placeholder'), 'should have `placeholder` class');
// change the value
$el.val('lorem ipsum');
assert.strictEqual($el.prop('value'), 'lorem ipsum', '`$el.val(string)` should change the `value` property');
assert.strictEqual(el.value, 'lorem ipsum', '`$el.val(string)` should change the `value` attribute');
ok(!$el.hasClass('placeholder'), '`$el.val(string)` should remove `placeholder` class');
// and clear it again
$el.val('');
assert.strictEqual($el.prop('value'), '', '`$el.val("")` should change the `value` property');
assert.strictEqual(el.value, placeholder, '`$el.val("")` should change the `value` attribute');
ok($el.hasClass('placeholder'), '`$el.val("")` should re-enable `placeholder` class');
// make sure the placeholder property works as expected.
assert.strictEqual($el.prop('placeholder'), placeholder, '$el.prop(`placeholder`) should return the placeholder value');
$el.prop('placeholder', 'new placeholder');
assert.strictEqual($el.prop('placeholder'), 'new placeholder', '$el.prop(`placeholder`, <string>) should set the placeholder value');
assert.strictEqual($el.value, 'new placeholder', '$el.prop(`placeholder`, <string>) should update the displayed placeholder value');
$el.prop('placeholder', placeholder);
};
test('emulates placeholder for <input type=text>', function(assert) {
testElement( assert, $('#input-type-text') );
});
test('emulates placeholder for <input type=search>', function(assert) {
testElement( assert, $('#input-type-search') );
});
test('emulates placeholder for <input type=email>', function(assert) {
testElement( assert, $('#input-type-email') );
});
test('emulates placeholder for <input type=url>', function(assert) {
testElement( assert, $('#input-type-url') );
});
test('emulates placeholder for <input type=tel>', function(assert) {
testElement( assert, $('#input-type-tel') );
});
test('emulates placeholder for <input type=tel>', function(assert) {
testElement( assert, $('#input-type-tel') );
});
test('emulates placeholder for <input type=password>', function(assert) {
var selector = '#input-type-password';
var $el = $(selector);
var el = $el[0];
var placeholder = el.getAttribute('placeholder');
assert.strictEqual($el.placeholder(), $el, 'should be chainable');
// Re-select the element, as it gets replaced by another one in some browsers
$el = $(selector);
el = $el[0];
assert.strictEqual(el.value, placeholder, 'should set `placeholder` text as `value`');
assert.strictEqual($el.prop('value'), '', 'propHooks works properly');
assert.strictEqual($el.val(), '', 'valHooks works properly');
ok($el.hasClass('placeholder'), 'should have `placeholder` class');
// test on focus
$el.focus();
// Re-select the element, as it gets replaced by another one in some browsers
$el = $(selector);
el = $el[0];
assert.strictEqual(el.value, '', '`value` should be the empty string on focus');
assert.strictEqual($el.prop('value'), '', 'propHooks works properly');
assert.strictEqual($el.val(), '', 'valHooks works properly');
ok(!$el.hasClass('placeholder'), 'should not have `placeholder` class on focus');
// and unfocus (blur) again
$el.blur();
// Re-select the element, as it gets replaced by another one in some browsers
$el = $(selector);
el = $el[0];
assert.strictEqual(el.value, placeholder, 'should set `placeholder` text as `value`');
assert.strictEqual($el.prop('value'), '', 'propHooks works properly');
assert.strictEqual($el.val(), '', 'valHooks works properly');
ok($el.hasClass('placeholder'), 'should have `placeholder` class');
});
test('emulates placeholder for <textarea></textarea>', function(assert) {
testElement( assert, $('#textarea') );
});
}(jQuery));