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matchHeight.spec.js
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matchHeight.spec.js
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// NOTE: these test specs are a work in progress
// manual testing before going into production is still advised!
// the following features are implemented, but do not have specs yet:
// TODO: spec for $(elements).matchHeight({ remove: true })
// TODO: spec for events: ready, load, resize, orientationchange
// TODO: spec for $.fn.matchHeight._groups
// TODO: spec for $.fn.matchHeight._throttle
// TODO: spec for $.fn.matchHeight._maintainScroll
// TODO: spec for handling box-sizing, padding, margin, border
describe('matchHeight', function() {
beforeEach(function(){
jasmine.addMatchers({
toBeWithinTolerance: function() {
return {
compare: function(actual, expected, tolerance) {
if (tolerance !== 0) {
tolerance = tolerance || 1;
}
return {
pass: Math.abs(expected - actual) <= tolerance
};
}
}
}
});
});
it('has been defined', function(done) {
var matchHeight = $.fn.matchHeight;
expect($.isFunction(matchHeight)).toBe(true);
expect($.isArray(matchHeight._groups)).toBe(true);
expect($.isNumeric(matchHeight._throttle)).toBe(true);
expect(typeof matchHeight._maintainScroll).toBe('boolean');
expect($.isFunction(matchHeight._rows)).toBe(true);
expect($.isFunction(matchHeight._apply)).toBe(true);
expect($.isFunction(matchHeight._applyDataApi)).toBe(true);
expect($.isFunction(matchHeight._update)).toBe(true);
expect($.isFunction(matchHeight._parse)).toBe(true);
expect($.isFunction(matchHeight._parseOptions)).toBe(true);
done();
});
it('has matched heights automatically after images load', function(done) {
var $items = $('.image-items'),
currentBreakpoint = testHelper.getCurrentBreakpoint(),
item0Height = $items.find('.item-0').outerHeight(),
item1Height = $items.find('.item-1').outerHeight(),
item2Height = $items.find('.item-2').outerHeight(),
item3Height = $items.find('.item-3').outerHeight();
if (currentBreakpoint === 'mobile') {
// all heights will be different
} else if (currentBreakpoint === 'tablet') {
expect(item0Height).toBeWithinTolerance(item1Height);
expect(item2Height).toBeWithinTolerance(item3Height);
} else if (currentBreakpoint === 'desktop') {
expect(item0Height).toBeWithinTolerance(item3Height);
expect(item1Height).toBeWithinTolerance(item3Height);
expect(item2Height).toBeWithinTolerance(item3Height);
}
done();
});
it('has found rows correctly', function(done) {
var $items = $('.simple-items').children('.item'),
rows = $.fn.matchHeight._rows($items),
currentBreakpoint = testHelper.getCurrentBreakpoint(),
expectedNumberCols = 4,
expectedNumberRows = 2;
if (testHelper.isMediaQueriesSupported) {
if (currentBreakpoint === 'mobile') {
expectedNumberCols = 1;
expectedNumberRows = 8;
} else if (currentBreakpoint === 'tablet') {
expectedNumberCols = 2;
expectedNumberRows = 4;
}
}
expect(rows.length).toBe(expectedNumberRows);
$.each(rows, function(i, $row) {
expect($row.length).toBe(expectedNumberCols);
$row.each(function(j, item) {
expect($(item).hasClass('item-' + ((i * expectedNumberCols) + j))).toBe(true);
});
});
done();
});
it('has matched heights when byRow true', function(done) {
// test custom toBeWithinTolerance matcher
expect(-1.0001).not.toBeWithinTolerance(0);
expect(-1).toBeWithinTolerance(0);
expect(-0.1).toBeWithinTolerance(0);
expect(0).toBeWithinTolerance(0);
expect(0.1).toBeWithinTolerance(0);
expect(1).toBeWithinTolerance(0);
expect(1.0001).not.toBeWithinTolerance(0);
$('.simple-items, .image-items, .nested-items-parent, .nested-items,' +
'.fixed-items, .inline-block-items, .inline-flex-items, .items-with-float, .inline-style-items, .remove-items')
.each(function() {
var $items = $(this).children('.item'),
rows = $.fn.matchHeight._rows($items);
$.each(rows, function(index, $row) {
var targetHeight = $row.first().outerHeight(),
maxNaturalHeight = 0;
$row.each(function() {
var $item = $(this),
heightCss = $item.css('height'),
actualHeight = $item.outerHeight();
$item.css('height', '');
var naturalHeight = $item.outerHeight();
$item.css('height', heightCss);
expect(actualHeight).toBeWithinTolerance(targetHeight);
if (naturalHeight > maxNaturalHeight) {
maxNaturalHeight = naturalHeight;
}
});
expect(targetHeight).toBeWithinTolerance(maxNaturalHeight);
});
});
done();
});
it('has matched heights when byRow false', function(done) {
$.each($.fn.matchHeight._groups, function() {
this.options._oldByRow = this.options.byRow;
this.options.byRow = false;
});
$.fn.matchHeight._update();
$('.simple-items, .image-items,' +
'.fixed-items, .inline-block-items, .inline-flex-items, .items-with-float, .inline-style-items, .remove-items')
.each(function() {
var $items = $(this).children('.item'),
targetHeight = $items.first().outerHeight(),
maxNaturalHeight = 0;
$items.each(function() {
var $item = $(this),
heightCss = $item.css('height'),
actualHeight = $item.outerHeight();
$item.css('height', '');
var naturalHeight = $item.outerHeight();
$item.css('height', heightCss);
expect(actualHeight).toBeWithinTolerance(targetHeight);
if (naturalHeight > maxNaturalHeight) {
maxNaturalHeight = naturalHeight;
}
});
// TODO: solve this for .nested-items-parent, .nested-items
expect(targetHeight).toBeWithinTolerance(maxNaturalHeight);
});
$.each($.fn.matchHeight._groups, function() {
this.options.byRow = this.options._oldByRow;
delete this.options._oldByRow;
});
$.fn.matchHeight._update();
done();
});
it('has matched heights for hidden items', function(done) {
$('body').removeClass('test-hidden');
$('.hidden-items .item-2 .items-container, .hidden-items .item-3 .items-container')
.each(function() {
var $items = $(this).children('.item'),
rows = $.fn.matchHeight._rows($items);
$.each(rows, function(index, $row) {
var targetHeight = $row.first().outerHeight(),
maxNaturalHeight = 0;
$row.each(function() {
var $item = $(this),
heightCss = $item.css('height'),
actualHeight = $item.outerHeight();
$item.css('height', '');
var naturalHeight = $item.outerHeight();
$item.css('height', heightCss);
expect(actualHeight).toBeWithinTolerance(targetHeight);
if (naturalHeight > maxNaturalHeight) {
maxNaturalHeight = naturalHeight;
}
});
expect(targetHeight).toBeWithinTolerance(maxNaturalHeight);
});
});
$('body').addClass('test-hidden');
done();
});
it('has matched heights when using data api', function(done) {
var $items = $('.data-api-items'),
currentBreakpoint = testHelper.getCurrentBreakpoint(),
item0Height = $items.find('.item-0').outerHeight(),
item1Height = $items.find('.item-1').outerHeight(),
item2Height = $items.find('.item-2').outerHeight(),
item3Height = $items.find('.item-3').outerHeight();
if (currentBreakpoint !== 'mobile') {
expect(item0Height).toBeWithinTolerance(item1Height);
expect(item2Height).toBeWithinTolerance(item3Height);
expect(item0Height).not.toBeWithinTolerance(item2Height);
expect(item1Height).not.toBeWithinTolerance(item3Height);
}
done();
});
it('has matched heights when using target option', function(done) {
var $items = $('.target-items'),
item0Height = $items.find('.item-0').outerHeight(),
item1Height = $items.find('.item-1').outerHeight(),
item2Height = $items.find('.item-2').outerHeight(),
item3Height = $items.find('.item-3').outerHeight();
expect(item0Height).toBeWithinTolerance(item1Height);
expect(item2Height).toBeWithinTolerance(item1Height);
expect(item3Height).toBeWithinTolerance(item1Height);
done();
});
it('has applied the property option', function(done) {
var $items = $('.property-items'),
currentBreakpoint = testHelper.getCurrentBreakpoint(),
_parse = $.fn.matchHeight._parse,
item0Value = _parse($items.find('.item-0').css('min-height')),
item1Value = _parse($items.find('.item-1').css('min-height')),
item2Value = _parse($items.find('.item-2').css('min-height')),
item3Value = _parse($items.find('.item-3').css('min-height'));
if (currentBreakpoint === 'tablet') {
expect(item0Value).toBeWithinTolerance(item1Value);
expect(item3Value).toBeWithinTolerance(item2Value);
} else if (currentBreakpoint === 'desktop') {
expect(item0Value).toBeWithinTolerance(item1Value);
expect(item2Value).toBeWithinTolerance(item1Value);
expect(item3Value).toBeWithinTolerance(item1Value);
}
done();
});
it('can manually update heights and fires global callbacks', function(done) {
var currentBreakpoint = testHelper.getCurrentBreakpoint();
// spy on global callbacks
spyOn($.fn.matchHeight, '_beforeUpdate');
spyOn($.fn.matchHeight, '_afterUpdate');
// add more content to one of the items to change it's height
$('.simple-items .item-1').append('<p>Test content update.</p>');
// call update which should match heights again
$.fn.matchHeight._update();
if (currentBreakpoint === 'mobile') {
// all heights will be different
} else {
// check item heights are as expected
$('.simple-items').each(function() {
var $items = $(this).children('.item'),
rows = $.fn.matchHeight._rows($items);
$.each(rows, function(index, $row) {
var targetHeight = $row.first().outerHeight(),
maxNaturalHeight = 0;
$row.each(function() {
var $item = $(this),
heightCss = $item.css('height'),
actualHeight = $item.outerHeight();
$item.css('height', '');
var naturalHeight = $item.outerHeight();
$item.css('height', heightCss);
expect(actualHeight).toBeWithinTolerance(targetHeight);
if (naturalHeight > maxNaturalHeight) {
maxNaturalHeight = naturalHeight;
}
});
expect(targetHeight).toBeWithinTolerance(maxNaturalHeight);
});
});
}
// check callbacks were fired
expect($.fn.matchHeight._beforeUpdate).toHaveBeenCalled();
expect($.fn.matchHeight._afterUpdate).toHaveBeenCalled();
var beforeUpdateArgs = $.fn.matchHeight._beforeUpdate.calls.argsFor(0),
afterUpdateArgs = $.fn.matchHeight._afterUpdate.calls.argsFor(0);
// group arg
expect($.isArray(beforeUpdateArgs[1])).toBe(true);
expect($.isArray(afterUpdateArgs[1])).toBe(true);
done();
});
it('parses numbers and NaN', function(done) {
var _parse = $.fn.matchHeight._parse;
expect(_parse(1)).toBe(1);
expect(_parse(1.1)).toBe(1.1);
expect(_parse('1')).toBe(1);
expect(_parse('1.1')).toBe(1.1);
expect(_parse('1px')).toBe(1);
expect(_parse('1.1px')).toBe(1.1);
expect(_parse(NaN)).toBe(0);
done();
});
it('parses options', function(done) {
var _parseOptions = $.fn.matchHeight._parseOptions,
defaultOptions = {
byRow: true,
property: 'height',
target: null,
remove: false
};
expect(_parseOptions()).toEqual(defaultOptions);
expect(_parseOptions({
byRow: false,
property: 'min-height',
target: null,
remove: true
})).toEqual({
byRow: false,
property: 'min-height',
target: null,
remove: true
});
expect(_parseOptions('remove')).toEqual({
byRow: defaultOptions.byRow,
property: defaultOptions.property,
target: defaultOptions.target,
remove: true
});
expect(_parseOptions(true)).toEqual({
byRow: true,
property: defaultOptions.property,
target: defaultOptions.target,
remove: defaultOptions.remove
});
expect(_parseOptions(false)).toEqual({
byRow: false,
property: defaultOptions.property,
target: defaultOptions.target,
remove: defaultOptions.remove
});
done();
});
it('maintains inline styles', function(done) {
var $items = $('.inline-style-items'),
item0Value = $items.find('.item-0')[0].style.display,
item1Value = $items.find('.item-1')[0].style.position,
item2Value = $items.find('.item-2')[0].style.minHeight,
item3Value = $items.find('.item-3')[0].style.padding;
expect(item0Value).toBe('inline-block');
expect(item1Value).toBe('relative');
expect(item2Value).toBe('10px');
expect(item3Value).toBe('15px');
done();
});
it('can be removed', function(done) {
var matchHeight = $.fn.matchHeight,
$item = $('.remove-items').find('.item-0'),
isInAnyGroup = false;
$item.matchHeight({ remove: true });
expect($item[0].style.height).toBeFalsy();
for (var i = 0; i < matchHeight._groups.length; i += 1) {
var group = matchHeight._groups[i];
if ($.inArray($item[0], group.elements) !== -1) {
isInAnyGroup = true;
break;
}
}
expect(isInAnyGroup).toBeFalsy();
done();
});
});
jasmine.getEnv().addReporter({
suiteStarted: function() {
window.specsPassed = [];
window.specsFailed = [];
$('.test-summary').text('running tests...');
},
specDone: function(result) {
if (result.status === 'passed') {
window.specsPassed.push(result.id);
} else {
window.specsFailed.push(result.id);
}
},
suiteDone: function() {
$('.test-summary')
.toggleClass('has-passed', window.specsFailed.length === 0)
.toggleClass('has-failed', window.specsFailed.length !== 0)
.text(window.specsPassed.length + ' tests passed, ' + window.specsFailed.length + ' failed');
}
});
var testHelper = {
isMediaQueriesSupported: typeof (window.matchMedia || window.msMatchMedia) !== 'undefined' || navigator.userAgent.indexOf('MSIE 9.0') >= 0,
getCurrentBreakpoint: function() {
if (testHelper.isMediaQueriesSupported) {
var windowWidth = $(window).width();
if (windowWidth <= 640) {
return 'mobile';
} else if (windowWidth <= 1024) {
return 'tablet';
}
}
return 'desktop';
}
};