chai-jquery

chai-jquery

chai-jquery is an extension to the chai assertion library that provides a set of jQuery-specific assertions.

Usage

Include chai-jquery.js in your test file, after jquery.js and chai.js (version 1.0.0-rc1 or later):

<script src="jquery.js"></script>
<script src="chai.js"></script>
<script src="chai-jquery.js"></script>

Note that jquery.js and chai.js can be inserted one before another (order does not matter here).

Use the assertions with chai's expect or should assertions.

Assertions

attr(name[, value])

Assert that the first element of the selection has the given attribute, using .attr(). Optionally, assert a particular value as well. The return value is available for chaining.

$('#header').should.have.attr('foo');
expect($('body')).to.have.attr('foo', 'bar');
expect($('body')).to.have.attr('foo').match(/bar/);

prop(name[, value])

Assert that the first element of the selection has the given property, using .prop(). Optionally, assert a particular value as well. The return value is available for chaining.

$('#header').should.have.prop('disabled');
expect($('body')).to.have.prop('disabled', false);
expect($('body')).to.have.prop('value').match(/bar/);

css(name[, value])

Assert that the first element of the selection has the given CSS property, using .css(). Optionally, assert the computed value as well. The return value is available for chaining.

$('#header').should.have.css('background');
expect($('body')).to.have.css('background-color', 'rgb(0, 0, 0)');
expect($('body')).to.have.css('font-family').match(/sans-serif/);

data(name[, value])

Assert that the first element of the selection has the given data value, using .data(). Optionally, assert a particular value as well. The return value is available for chaining.

$('#header').should.have.data('foo');
expect($('body')).to.have.data('foo', 'bar');
expect($('body')).to.have.data('foo').match(/bar/);

class(className)

Assert that the first element of the selection has the given class, using .hasClass().

$('#header').should.have.class('foo');
expect($('body')).to.have.class('foo');

id(id)

Assert that the first element of the selection has the given id, using .attr('id').

$('.header').should.have.id('#main');
expect($('body')).to.have.id('foo');

html(html)

Assert that the html of the first element of the selection is equal to the given html, using .html().

$('.name').should.have.html('<em>John Doe</em>');
expect($('#title')).to.have.html('Chai Tea');

text(text)

Assert that the text of the first element of the selection is equal to the given text, using .text().

$('.name').should.have.text('John Doe');
expect($('#title')).to.have.text('Chai Tea');

value(value)

Assert that the first element of the selection has the given value, using .val().

$('.name').should.have.value('John Doe');
expect($('.year')).to.have.value('2012');

visible

Assert that at least one element of the selection is visible, using .is(':visible').

$('.name').should.be.visible;
expect($('.year')).to.be.visible;

hidden

Assert that at least one element of the selection is hidden, using .is(':hidden').

$('.name').should.be.hidden;
expect($('.year')).to.be.hidden;

selected

Assert that at least one element of the selection is selected, using .is(':selected').

$('option').should.be.selected;
expect($('option')).not.to.be.selected;

checked

Assert that at least one element of the selection is checked, using .is(':checked').

$('.checked').should.be.checked;
expect($('input')).not.to.be.checked;

enabled

Assert that at least one element of the selection is enabled, using .is(':enabled').

$('.enabled').should.be.enabled;
expect($('enabled')).to.be.enabled;

disabled

Assert that at least one element of the selection is disabled, using .is(':disabled').

$('.disabled').should.be.disabled;
expect($('input')).not.to.be.disabled;

empty

Assert that at least one element of the selection is empty, using .is(':empty'). If the object asserted against is not a jQuery object, the original implementation will be called.

$('.empty').should.be.empty;
expect($('body')).not.to.be.empty;

exist

Assert that the selection is not empty. Note that this overrides the built-in chai assertion. If the object asserted against is not a jQuery object, the original implementation will be called.

$('#exists').should.exist;
expect($('#nonexistent')).not.to.exist;

match(selector)

Assert that the selection matches a given selector, using .is(). Note that this overrides the built-in chai assertion. If the object asserted against is not a jQuery object, the original implementation will be called.

$('input').should.match('#foo');
expect($('#empty')).to.match(':empty');

contain(text)

Assert that the selection contains the given text, using :contains(). If the object asserted against is not a jQuery object, or if contain is not called as a function, the original implementation will be called.

$('body').should.contain('text');
expect($('#content')).to.contain('text');

descendants(selector)

Assert that the selection contains at least one element which has a descendant matching the given selector, using .has().

$('body').should.have.descendants('h1');
expect($('#content')).to.have.descendants('div');

focus()

Assert that at least one element of the selection is visible. Note that this assertion does not use .is(':focus'). It rather uses $('.element').get(0) === document.activeElement, because of incompatibility of .is(':focus') in certain webkit browsers.

$('#focused').should.have.focus();
expect($('#nonfocused')).not.have.focus();

Contributing

To run the test suite, run npm install (requires Node.js to be installed on your system), and open test/index.html in your web browser.

License

Copyright (c) 2012 John Firebaugh

MIT License (see the LICENSE file)